Re: [gentoo-user] BASH Completion - Mixing directories and executables

2011-10-03 Thread James Broadhead
On 3 October 2011 01:42, Hilco Wijbenga hilco.wijbe...@gmail.com wrote:
 foo

It's possible that you would prefer zsh's completion style and configurability.



[gentoo-user] [OT]: Searching for information aboyt a VFD/flourescenz display

2011-10-03 Thread meino . cramer
Hi,

I am looking for informations about a VFD (Flourescenz Display)
module.
Its product number is DS M202-MD-07g-2, where DS stands for
Display Systems, which was part of the Hegener  Glaser company.

The rest of the product number uses the same numbering scheme as 
FUTABA uses for its VFDs but I didnt found anything under their
datasheets, which ca,e close to mine.

There is a controller on this board, which is marked with
MHS
DS SPEEDY1
F1-80C51AXR
(C) INTEL 80, 82
9505 .W31214K

It has two (!) 16-pin connectors to control the board.


Who can provide some informations how to drive this board
or knows of a datasheet?


Thank you very much in advance for any help!

Best regards,
mcc





Re: [gentoo-user] BASH Completion - Mixing directories and executables

2011-10-03 Thread Hilco Wijbenga
On 3 October 2011 01:05, James Broadhead jamesbroadh...@gmail.com wrote:
 On 3 October 2011 01:42, Hilco Wijbenga hilco.wijbe...@gmail.com wrote:
 foo

foo? :-)

 It's possible that you would prefer zsh's completion style and 
 configurability.

All right, thank you. I've seen ZSH mentioned several times before. I
guess it's time to take a look.



[gentoo-user] Strange problem with urxvt

2011-10-03 Thread Allan Nielsen
Hi

First of all, sorry if this is not the right forum to post this question.


I'm having a strange problem with urxvt on one of my computers.

When I uses a command which type some text on the screen and then waits for
input, the text does not appear in urxvt until I resize the window, or
forces an redraw in other ways.

It works fine with other terminal emulators, and urxvt works fine on my
other computer (with the same settings).

I'm using gentoo, xmonad and urxvt


Does any of you have a clue on what might be my problem?

Best regards
Allan W. Nielsen


Re: [gentoo-user] Strange problem with urxvt

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 1:54 PM, Allan Nielsen a...@awn.dk wrote:
 Hi

 First of all, sorry if this is not the right forum to post this question.


 I'm having a strange problem with urxvt on one of my computers.

 When I uses a command which type some text on the screen and then waits for
 input, the text does not appear in urxvt until I resize the window, or
 forces an redraw in other ways.

 It works fine with other terminal emulators, and urxvt works fine on my
 other computer (with the same settings).

 I'm using gentoo, xmonad and urxvt


 Does any of you have a clue on what might be my problem?

My first guess would be a bug in xmonad, urxvt, or even your video driver.

1) If you use ssh X forwarding to run urxvt on the affected host (so,
from a machine running xmonad, but not the machine with the problem,
ssh -x host_with_problem urxvt), do you see the same artifact?

2) Do the versions of xmonad and urxvt on your various systems differ?
Can you upgrade or downgrade xmonad and/or urxvt on the affected
system to match the other systems? Does doing so resolve the problem?

3) Does the affected system use a different video driver than the
unaffected systems? If it uses the same video driver, is it using a
different version? (And if it uses the same video driver, but
different versions, does switching to a video driver version matching
an unaffected system solve the problem?)

-- 
:wq



[gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Grant Edwards
Just recently I've run in to problems because my hard drives are not
detected in a predictable order, so my fstab that mount /dev/sdb1 and
/dev/sdc1 sometimes result in directory trees in the wrong places
(/dev/sda seems consistent, but I don't know why).

What's the recommended way to fix this?

-- 
Grant Edwards   grant.b.edwardsYow! Boy, am I glad it's
  at   only 1971...
  gmail.com




Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 2:40 PM, Grant Edwards grant.b.edwa...@gmail.com wrote:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

 What's the recommended way to fix this?

Mount by volume name or UUID. For example, from fstab:

UUID=bddee12c-0047-4b4b-b1d2-9e137a9a8915 / autonoatime 0   1
UUID=857d7723-9dbf-4222-ac28-e05b87b41997 none  swapsw  0   0
UUID=8d3648cf-5260-4064-b6a5-50df42acb3d8 /mnt/prevhome autonoatime 0  2
UUID=d7c17623-255b-4313-b50b-99f0f79a0681 /home autonoatime 0   2
UUID=33cc682d-0dd4-4c2b-bf37-876e9f8d3ef4 /boot autonoatime 0   2


To find the UUID:

shortcircuit:4@serenity/dev/disk/by-uuid
Mon Oct 03 02:49 PM
!509 #9 j0 ?0 $ ls -l
total 0
lrwxrwxrwx 1 root root 10 Sep 24 00:11
33cc682d-0dd4-4c2b-bf37-876e9f8d3ef4 - ../../sda1
lrwxrwxrwx 1 root root 10 Sep 24 00:11
857d7723-9dbf-4222-ac28-e05b87b41997 - ../../sda2
lrwxrwxrwx 1 root root 10 Sep 24 00:11
8d3648cf-5260-4064-b6a5-50df42acb3d8 - ../../sda3
lrwxrwxrwx 1 root root 10 Sep 24 00:11
bddee12c-0047-4b4b-b1d2-9e137a9a8915 - ../../sda4
lrwxrwxrwx 1 root root 10 Sep 24 00:11
d7c17623-255b-4313-b50b-99f0f79a0681 - ../../dm-0

-- 
:wq



[gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Grant Edwards
On 2011-10-03, Grant Edwards grant.b.edwa...@gmail.com wrote:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

I still don't know what changed to cause disks ordering to become
non-deterministic.  I recently upgraded from a single-core CPU to a
dual-core CPU.  Would that do it?

 What's the recommended way to fix this?

After a bit more googling, it looks like this is what disk labels are
for.  Never used them before, but it looks like it's time to give them
a go.

-- 
Grant Edwards   grant.b.edwardsYow! My mind is making
  at   ashtrays in Dayton ...
  gmail.com




Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Florian Philipp
Am 03.10.2011 20:40, schrieb Grant Edwards:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).
 
 What's the recommended way to fix this?
 

Mount by UUID or label. In /etc/fstab, specify UUID=foo or LABEL=bar
instead of /dev/sdx1. You can current UUIDs and labels with `ls -l
/dev/disk/by-uuid` and `ls -l /dev/disk/by-label`, respectively.

Hope this helps,
Florian Philipp



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Description: OpenPGP digital signature


Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 11:49 AM, Grant Edwards
grant.b.edwa...@gmail.com wrote:
 On 2011-10-03, Grant Edwards grant.b.edwa...@gmail.com wrote:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

 I still don't know what changed to cause disks ordering to become
 non-deterministic.  I recently upgraded from a single-core CPU to a
 dual-core CPU.  Would that do it?

 What's the recommended way to fix this?

 After a bit more googling, it looks like this is what disk labels are
 for.  Never used them before, but it looks like it's time to give them
 a go.

They have the advantage over UUID's in that you can set them and
therefore can be human readable. Also, if you use a desktop
environment, they look nice in file managers.

Good luck.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Strange problem with urxvt

2011-10-03 Thread Bill Longman
On 10/03/2011 10:54 AM, Allan Nielsen wrote:
 Hi
 
 First of all, sorry if this is not the right forum to post this question.
 
 
 I'm having a strange problem with urxvt on one of my computers.
 
 When I uses a command which type some text on the screen and then waits
 for input, the text does not appear in urxvt until I resize the window,
 or forces an redraw in other ways.
 
 It works fine with other terminal emulators, and urxvt works fine on my
 other computer (with the same settings).
 
 I'm using gentoo, xmonad and urxvt
 
 
 Does any of you have a clue on what might be my problem?

I have a similar problem with xterm in KDE using radeon. Is that your
environment, too, Allan? (You should have provided your X version and
video driver information in your question, BTW.)

I see it across the board on radeon only, though, with X 1.10.4. I have
focus-follows-mouse and I just mouse out and back to my xterm and it
redraws. It seems any xterm-type terminal does the same thing. I don't
think I have ever had the problem with konsole, though.



Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 11:40 AM, Grant Edwards
grant.b.edwa...@gmail.com wrote:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

 What's the recommended way to fix this?

You can set labels to all the partitions, and set /etc/fstab to use
them: my fstab looks like:

LABEL=Gentoo/   ext4noatime 0 1
LABEL=Swap  noneswapsw  0 0
shm /dev/shmtmpfs   nodev,nosuid,noexec 0 0
tmpfs   /tmptmpfs   defaults,nosuid 0 0

I believe this is the recommended way to use fstab in distros like
Fedora and OpenSUSE, because of your use case exactly.

You can set labels to ext[234] partitions with e2label, and for NTFS
partitions you can use ntfslabel, and to swap partitions with mkswap.
I suppose every filesystem in the world has a similar tool to set its
label.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Strange problem with urxvt

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 3:09 PM, Bill Longman bill.long...@gmail.com wrote:
 On 10/03/2011 10:54 AM, Allan Nielsen wrote:
 I'm using gentoo, xmonad and urxvt

 I have a similar problem with xterm in KDE using radeon. Is that your
 environment, too, Allan?

xmonad is a window manager, so he wouldn't be using kwin. I don't know
how much KDE or xdg integration it does, though.

-- 
:wq



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Paul Hartman
On Mon, Oct 3, 2011 at 2:03 PM, Canek Peláez Valdés can...@gmail.com wrote:
 On Mon, Oct 3, 2011 at 11:49 AM, Grant Edwards
 After a bit more googling, it looks like this is what disk labels are
 for.  Never used them before, but it looks like it's time to give them
 a go.

 They have the advantage over UUID's in that you can set them and
 therefore can be human readable. Also, if you use a desktop
 environment, they look nice in file managers.

AFAIK that benefit of labels can also be a danger. If you have
multiple systems and use the same label naming scheme on all of them
(for example you call your partitions root home swap etc.) and
someday you plug the HDD from one system into the other, it could
cause confusion by potentially choosing the wrong one. But someone can
correct me if I'm wrong. :)



Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Paul Hartman
On Mon, Oct 3, 2011 at 2:01 PM, Florian Philipp li...@binarywings.net wrote:
 Am 03.10.2011 20:40, schrieb Grant Edwards:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

 What's the recommended way to fix this?


 Mount by UUID or label. In /etc/fstab, specify UUID=foo or LABEL=bar
 instead of /dev/sdx1. You can current UUIDs and labels with `ls -l
 /dev/disk/by-uuid` and `ls -l /dev/disk/by-label`, respectively.

Or another way I think is easier: run /sbin/blkid which will tell you
all of the info at once, such as:

/dev/sda1: LABEL=boot UUID=a3193af5-35e1-4908-bfbd-928e8841ead3 TYPE=ext2
/dev/sda2: LABEL=root UUID=feaa6b06-5935-491d-9aef-fe1415c380b6 TYPE=ext4
/dev/sda3: LABEL=swap UUID=da4437c5-6f19-409a-a71a-ee63be6ef2e5 TYPE=swap
/dev/sda4: LABEL=home UUID=145fb951-6f01-4cff-b221-278b72c0604f TYPE=ext4

It also tells you the RAID member uuid and sub_uuid for your RAID
partitions, and more (man blkid).



Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Mick
On Monday 03 Oct 2011 20:01:16 Florian Philipp wrote:
 Am 03.10.2011 20:40, schrieb Grant Edwards:
  Just recently I've run in to problems because my hard drives are not
  detected in a predictable order, so my fstab that mount /dev/sdb1 and
  /dev/sdc1 sometimes result in directory trees in the wrong places
  (/dev/sda seems consistent, but I don't know why).

Is it perhaps because /dev/sda is PATA on IDE and the rest are SATA?

  What's the recommended way to fix this?
 
 Mount by UUID or label. In /etc/fstab, specify UUID=foo or LABEL=bar
 instead of /dev/sdx1. You can current UUIDs and labels with `ls -l
 /dev/disk/by-uuid` and `ls -l /dev/disk/by-label`, respectively.

UUID or labels will solve this problem for sure, but if you are still trying 
to find out what changed to cause this, have you looked at your BIOS settings 
and how it recognises the drives?

Have you changed anything on the physical side (jumpers, cables, etc)?

-- 
Regards,
Mick


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Description: This is a digitally signed message part.


Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Dale

Grant Edwards wrote:

Just recently I've run in to problems because my hard drives are not
detected in a predictable order, so my fstab that mount /dev/sdb1 and
/dev/sdc1 sometimes result in directory trees in the wrong places
(/dev/sda seems consistent, but I don't know why).

What's the recommended way to fix this?



I went the LABEL direction too.  Here is a example fstab, mine actually.

LABEL=boot/bootext2defaults1 2
LABEL=root/reiserfsdefaults0 1
LABEL=swapnoneswapsw0 0
LABEL=var/varext3defaults0 2
LABEL=portage/usr/portageext3defaults0 2
LABEL=home/homereiserfsdefaults0 2
LABEL=data/dataext4defaults0 2

You can set that when your put the file system on or use the file system 
tools to set it without formating the partition.  It is usually -L 
label and whatever other options you use.  Since you already have a 
install on there, I strongly recommend the later, otherwise you lose 
your data.


Hope that helps.

Dale

:-)  :-)



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 3:28 PM, Paul Hartman
paul.hartman+gen...@gmail.com wrote:
 On Mon, Oct 3, 2011 at 2:03 PM, Canek Peláez Valdés can...@gmail.com wrote:
 They have the advantage over UUID's in that you can set them and
 therefore can be human readable. Also, if you use a desktop
 environment, they look nice in file managers.

 AFAIK that benefit of labels can also be a danger. If you have
 multiple systems and use the same label naming scheme on all of them
 (for example you call your partitions root home swap etc.) and
 someday you plug the HDD from one system into the other, it could
 cause confusion by potentially choosing the wrong one. But someone can
 correct me if I'm wrong. :)

I think we had that conversation one or two weeks ago, in the context
of lvm volume names.

-- 
:wq



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 12:28 PM, Paul Hartman
paul.hartman+gen...@gmail.com wrote:
 On Mon, Oct 3, 2011 at 2:03 PM, Canek Peláez Valdés can...@gmail.com wrote:
 On Mon, Oct 3, 2011 at 11:49 AM, Grant Edwards
 After a bit more googling, it looks like this is what disk labels are
 for.  Never used them before, but it looks like it's time to give them
 a go.

 They have the advantage over UUID's in that you can set them and
 therefore can be human readable. Also, if you use a desktop
 environment, they look nice in file managers.

 AFAIK that benefit of labels can also be a danger. If you have
 multiple systems and use the same label naming scheme on all of them
 (for example you call your partitions root home swap etc.) and
 someday you plug the HDD from one system into the other, it could
 cause confusion by potentially choosing the wrong one. But someone can
 correct me if I'm wrong. :)

You are right. But a) if you are swaping harddrives around, you better
know what you are doing, and b) nothing terrible happens, I believe
the first (or last) detected drive with a label in fstab will be
mounted. The other one will still be available by UUID and /dev
device.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Bill Longman
On 10/03/2011 12:01 PM, Florian Philipp wrote:
 Am 03.10.2011 20:40, schrieb Grant Edwards:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

 What's the recommended way to fix this?

 
 Mount by UUID or label. In /etc/fstab, specify UUID=foo or LABEL=bar
 instead of /dev/sdx1. You can current UUIDs and labels with `ls -l
 /dev/disk/by-uuid` and `ls -l /dev/disk/by-label`, respectively.

Or, if they are ext, use tune2fs -l. One of its output lines will be:

Filesystem UUID:  40ea622d-8265-4498-bc89-0c0f9020dffb



Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Mark Knecht
On Mon, Oct 3, 2011 at 11:40 AM, Grant Edwards
grant.b.edwa...@gmail.com wrote:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

 What's the recommended way to fix this?

 --
 Grant Edwards               grant.b.edwards        Yow! Boy, am I glad it's
                                  at               only 1971...
                              gmail.com

Did you possibly update your kernel? You might want to run smartctl
and see if any drives are developing problems.

Check out blkid for more device info and mount either by label or UUID
for more reliability.

- Mark

c2stable ~ # /sbin/blkid -o list
device  fs_typelabel   mount point UUID

/dev/sdb1   ext2   (not mounted)
b9dd1fb9-5c7b-459c-a7fc-ca8ebe032fcc
/dev/sdb2   swap   swap
2ea74bbb-8c1d-4a32-939d-512db4e40a54
/dev/sdb3   linux_raid_member c2stable:3 (in use)
de47f991-86d9-8467-0637-635b9c6d0591
/dev/sdb5   linux_raid_member  (in use)
edb0ed65-6e87-b20e-dc0d-88ba780ef6a3
/dev/sdb6   linux_raid_member c2stable:6 (in use)
249c7331-a820-3540-c8f3-b020fb30a66b
/dev/sdb7   linux_raid_member c2stable:7 (in use)
ded5e0c6-1a5a-73ad-0194-9557bb4e015a
/dev/sdd2   linux_raid_member c2stable:7 (in use)
ded5e0c6-1a5a-73ad-0194-9557bb4e015a
/dev/sdd3   linux_raid_member c2stable:3 (in use)
de47f991-86d9-8467-0637-635b9c6d0591
/dev/sdd4   ext3   (not mounted)
d218024b-c219-4e79-8d65-51f13ec43a45
/dev/sde2   linux_raid_member c2stable:7 (in use)
ded5e0c6-1a5a-73ad-0194-9557bb4e015a
/dev/sde3   linux_raid_member c2stable:3 (in use)
de47f991-86d9-8467-0637-635b9c6d0591
/dev/sda1   ext2   boot(not mounted)
4efd04f2-839f-4e11-a32d-8fa25129b541
/dev/sda2   swap   swap
ed41217e-abf4-4c60-a985-c0420eb054f3
/dev/sda3   linux_raid_member c2stable:3 (in use)
de47f991-86d9-8467-0637-635b9c6d0591
/dev/sda5   linux_raid_member  (in use)
edb0ed65-6e87-b20e-dc0d-88ba780ef6a3
/dev/sda6   linux_raid_member c2stable:6 (in use)
249c7331-a820-3540-c8f3-b020fb30a66b
/dev/sda7   linux_raid_member c2stable:7 (in use)
ded5e0c6-1a5a-73ad-0194-9557bb4e015a
/dev/sdc1   ext2   (not mounted)
27f276fa-6f62-4769-b9d7-deb511dfc60a
/dev/sdc2   swap   swap
0c6a1bd0-291e-4157-9b6a-67f7801c7a5e
/dev/sdc3   linux_raid_member c2stable:3 (in use)
de47f991-86d9-8467-0637-635b9c6d0591
/dev/sdc5   linux_raid_member  (in use)
edb0ed65-6e87-b20e-dc0d-88ba780ef6a3
/dev/sdc6   linux_raid_member c2stable:6 (in use)
249c7331-a820-3540-c8f3-b020fb30a66b
/dev/sdc7   linux_raid_member c2stable:7 (in use)
ded5e0c6-1a5a-73ad-0194-9557bb4e015a
/dev/md126  ext3   /
d55d673f-76d8-41ec-8dda-908287a97e42
/dev/md3ext4   RAID6root   (not mounted)
80c3ebf0-d92f-415f-a6d7-1cdb1ceab593
/dev/md7ext3   VirtualMachines /VirtualMachines
eb5f3040-4114-442e-8d34-16859e720310
/dev/md6ext3   (not mounted)
be24fdaa-dfb5-461e-8232-bb236fe6f1f3
c2stable ~ #



Re: [gentoo-user] Hard drives not detected in repeatable order.

2011-10-03 Thread Volker Armin Hemmann
Am Montag 03 Oktober 2011, 18:40:21 schrieb Grant Edwards:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).
 
 What's the recommended way to fix this?

use uuid to mount.

-- 
#163933



Re: [gentoo-user] Strange problem with urxvt

2011-10-03 Thread Bill Longman
On 10/03/2011 12:26 PM, Michael Mol wrote:
 On Mon, Oct 3, 2011 at 3:09 PM, Bill Longman bill.long...@gmail.com wrote:
 On 10/03/2011 10:54 AM, Allan Nielsen wrote:
 I'm using gentoo, xmonad and urxvt

 I have a similar problem with xterm in KDE using radeon. Is that your
 environment, too, Allan?
 
 xmonad is a window manager, so he wouldn't be using kwin. I don't know
 how much KDE or xdg integration it does, though.

Yes, I was asking about his hardware environment, Michael. I do not see
the same problem on my nvidia cards.



[gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Grant Edwards
On 2011-10-03, Paul Hartman paul.hartman+gen...@gmail.com wrote:
 On Mon, Oct 3, 2011 at 2:01 PM, Florian Philipp li...@binarywings.net wrote:
 Am 03.10.2011 20:40, schrieb Grant Edwards:
 Just recently I've run in to problems because my hard drives are not
 detected in a predictable order, so my fstab that mount /dev/sdb1 and
 /dev/sdc1 sometimes result in directory trees in the wrong places
 (/dev/sda seems consistent, but I don't know why).

 What's the recommended way to fix this?


 Mount by UUID or label. In /etc/fstab, specify UUID=foo or LABEL=bar
 instead of /dev/sdx1. You can current UUIDs and labels with `ls -l
 /dev/disk/by-uuid` and `ls -l /dev/disk/by-label`, respectively.

 Or another way I think is easier: run /sbin/blkid which will tell you
 all of the info at once, such as:

 /dev/sda1: LABEL=boot UUID=a3193af5-35e1-4908-bfbd-928e8841ead3 
 TYPE=ext2
 /dev/sda2: LABEL=root UUID=feaa6b06-5935-491d-9aef-fe1415c380b6 
 TYPE=ext4
 /dev/sda3: LABEL=swap UUID=da4437c5-6f19-409a-a71a-ee63be6ef2e5 
 TYPE=swap
 /dev/sda4: LABEL=home UUID=145fb951-6f01-4cff-b221-278b72c0604f 
 TYPE=ext4

 It also tells you the RAID member uuid and sub_uuid for your RAID
 partitions, and more (man blkid).

That's one I need to remember!

-- 
Grant Edwards   grant.b.edwardsYow! I want a WESSON OIL
  at   lease!!
  gmail.com




[gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Grant Edwards
On 2011-10-03, Mick michaelkintz...@gmail.com wrote:
 On Monday 03 Oct 2011 20:01:16 Florian Philipp wrote:
 Am 03.10.2011 20:40, schrieb Grant Edwards:
  Just recently I've run in to problems because my hard drives are not
  detected in a predictable order, so my fstab that mount /dev/sdb1 and
  /dev/sdc1 sometimes result in directory trees in the wrong places
  (/dev/sda seems consistent, but I don't know why).

 Is it perhaps because /dev/sda is PATA on IDE and the rest are SATA?

Two are SATA, one is Firewire.  They used to be detected consistently
with the two SATA drives first and second and the firewire drive
third.  Within the past few weeks, that changed, and sometimes the
Firewire drive shows up second

 UUID or labels will solve this problem for sure, but if you are still
 trying to find out what changed to cause this, have you looked at
 your BIOS settings and how it recognises the drives?

The only thing I can think of recently is the CPU upgrade, but that
was a couple months ago.  About six weeks ago I updated the kernel
from 2.6.37 to 3.6.39, but the drive order randomness didn't start
until the past week or two (I only reboot once or twice a month, so
it's hard to pin down the date of the change).

 Have you changed anything on the physical side (jumpers, cables,
 etc)?

Not that I know of.

-- 
Grant Edwards   grant.b.edwardsYow! How's it going in
  at   those MODULAR LOVE UNITS??
  gmail.com




Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Neil Bothwick
On Mon, 3 Oct 2011 14:28:05 -0500, Paul Hartman wrote:

  They have the advantage over UUID's in that you can set them and
  therefore can be human readable.

You can set the UUIDs yourself too, but I think they have to stick to the
standard format.

 Also, if you use a desktop
  environment, they look nice in file managers.  
 
 AFAIK that benefit of labels can also be a danger. If you have
 multiple systems and use the same label naming scheme on all of them
 (for example you call your partitions root home swap etc.) and
 someday you plug the HDD from one system into the other, it could
 cause confusion by potentially choosing the wrong one. But someone can
 correct me if I'm wrong. :)
 
If you have multiple systems, the sensible approach it to give each
filesystem a unique label, such as hostname-mountpoint, which also has
the benefit of making it clear which box a drive came from when you get
them mixed up.


-- 
Neil Bothwick

This is as bad as it can get-but don't bet on it.


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Description: PGP signature


Re: [gentoo-user] {OT} Development framework with access restriction?

2011-10-03 Thread Grant
 I think separate repositories would only be necessary when using
 distributed version control (git) as opposed to centralized
 (subversion).  I think subversion's path-based authorization should
 eliminate the need for separate repositories?


 Separate repos aren't strictly necessary, but it's much harder to verify
 your path permissions than it is to verify that your repositories are
 separate.

 The first involves config files and cascading information; the second
 involves being able to count to two =)

Would multiple repos work in a scenario where different developers
have access to different stuff and some stuff should be accessible to
multiple devs?  I don't think you want the same stuff in more than one
repo.  It seems like managing multiple repos would get out of hand in
that sort of situation and I might be better off with config files and
a single repo.

- Grant



Re: [gentoo-user] {OT} Development framework with access restriction?

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 5:54 PM, Grant emailgr...@gmail.com wrote:
 I think separate repositories would only be necessary when using
 distributed version control (git) as opposed to centralized
 (subversion).  I think subversion's path-based authorization should
 eliminate the need for separate repositories?


 Separate repos aren't strictly necessary, but it's much harder to verify
 your path permissions than it is to verify that your repositories are
 separate.

 The first involves config files and cascading information; the second
 involves being able to count to two =)

 Would multiple repos work in a scenario where different developers
 have access to different stuff and some stuff should be accessible to
 multiple devs?  I don't think you want the same stuff in more than one
 repo.  It seems like managing multiple repos would get out of hand in
 that sort of situation and I might be better off with config files and
 a single repo.

With SVN, you do have 'externals' available:
http://svnbook.red-bean.com/en/1.0/ch07s03.html

Where I work, externals are used for holding common code like large
libraries which are needed or useful to multiple projects.

-- 
:wq



Re: [gentoo-user] Blank screen in X, no errors in Xorg.log

2011-10-03 Thread Adam Carter
FYI, this is fixed. I ran 'strace startx  startx.strace.out 21' and
this showed;
/usr/bin/X: symbol lookup error:
/usr/lib64/xorg/modules/drivers/fglrx_drv.so: undefined symbol:
GlxInitVisuals2D

Which means that i forget to eselect opengl set 1, though it wasn't
logged to Xorg.0.log (so it was logged to STDOUT, but i couldn't see
that as the screen was blank).

Then after fixing that;
which: no keychain in
(/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.3)
/etc/X11/xinit/xinitrc: line 63: exec: xterm: not found
/etc/X11/xinit/xinitrc: line 61: xterm: command not found
xinit: connection to X server lost

So i emerged keychain and xterm and it now works. Of course i didn't
need xterm as i'm running gnome, so i could have just kicked that off
instead.



Re: [gentoo-user] {OT} Development framework with access restriction?

2011-10-03 Thread Grant
  I'm not sure if you are overcomplicating this by trying to use Unix
  permission.  Have you instead considered webdav?  You can restrict this
  to particular (apache) users/groups, directories, files.  It also uses
  lockfiles so with two users editing a file simultaneously will cause a
  warning when you try to save it.
 
  How does webdav relate to something like subversion?  Do they
  compliment each other or are they substitutes?
 
  - Grant
 
  WebDAV has no version control. It is just an extension to HTTP for
  distributed authoring. It supports locking files and methods which make
  it more filesystem-like. AFAIK SVN uses WebDAV for its HTTP transfer
  protocol.

 Got it.  It sounds like I could use WebDAV in conjunction with
 subversion or git.  I'll look into that.

 The reason I mentioned webdav(s) earlier was because you can have granular
 control of what each user can access.  You need specify only what
 directory/file you want them to be able to access and they shouldn't have
 access to anything else.

I believe the same is accomplished through the use of subversion's
path-based authorization.

 Also, you don't need to give them shell access - which I find
 (psychologically) more reassuring.  ;-)

I like that a lot.  The way I understand it, in order to edit a file
with subversion, you would check out the file from the repository to
your local machine, edit it on your local machine, and commit your
changes to the repository.  How does the workflow change with webdav?

- Grant



[gentoo-user] {OT} Computers and mental/emotional health

2011-10-03 Thread Grant
Over the years I've found that the time I spend on the computer has a
negative affect on my mental/emotional health.  It seems to suck the
life out of life and impair my ability to function in the real world.
I've tried various things to counteract the problem, but the only
thing that really works is not getting on the computer, and that works
really well.  I think part of the problem is caused by my processing
information, but I think part is due to radiation/glare from the
laptop screen.  Has anyone dealt with this successfully?  I'd love to
know how you did it.

- Grant



[gentoo-user] Strange partition on USB stick

2011-10-03 Thread Mick
I can't recall if I asked this before, but I am looking at a partition on a 
USB stick which seems to have a FAT16 fs on it and in parted says:

==
Model: Crucial Gizmo! overdrive (scsi)
Disk /dev/sdb: 1023MB
Sector size (logical/physical): 512B/512B
Partition Table: loop

Number  Start  End SizeFile system  Flags
 1  0.00B  1023MB  1023MB  fat16
==

What does Partition Table: loop mean?


fdisk -l is more confusing:
==
Disk /dev/sdb: 1022 MB, 1022623744 bytes
32 heads, 61 sectors/track, 1023 cylinders, total 1997312 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x69737369

This doesn't look like a partition table
Probably you selected the wrong device.

   Device Boot  Start End  Blocks   Id  System
/dev/sdb1   ?  1869771365  203846088684344761   69  Unknown
/dev/sdb2   ?  1701519481  3571400945   934940732+  73  Unknown
/dev/sdb3   ?25732573   0   74  Unknown
/dev/sdb4   0  3435113471  17175567360  Empty

Partition table entries are not in disk order
==

What are the partitions shown as sdb1-4?

Also Id 73 and 74 are I think reserved Ids?  Id 69 is I think Novell Netware 
5+ (according to: 
http://www.win.tue.nl/~aeb/partitions/partition_types-1.html) not FAT16.

I am not sure I understand what it is showing me.  

BTW, cfdisk spews it out right from the start:
==
FATAL ERROR: Bad primary partition 1: Partition begins after end-of-disk
  Press any key to exit cfdisk
==

So, does it have a partition table?  How can you explain the fdisk output?
-- 
Regards,
Mick


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Description: This is a digitally signed message part.


Re: [gentoo-user] {OT} Computers and mental/emotional health

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 6:15 PM, Grant emailgr...@gmail.com wrote:
 Over the years I've found that the time I spend on the computer has a
 negative affect on my mental/emotional health.  It seems to suck the
 life out of life and impair my ability to function in the real world.
 I've tried various things to counteract the problem, but the only
 thing that really works is not getting on the computer, and that works
 really well.  I think part of the problem is caused by my processing
 information, but I think part is due to radiation/glare from the
 laptop screen.

Sitting inside at a computer all the time generally means you're not
getting sunlight. In effect, you get winter depression year-round.
Look into getting more sunlight. Failing that, try a full-spectrum
lamp.

 Has anyone dealt with this successfully?  I'd love to
 know how you did it.

Made most of my friends online. Met my fiancee through a Facebook
connection. Also, go outside regularly.

-- 
:wq



Re: [gentoo-user] {OT} Development framework with access restriction?

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 6:01 PM, Grant emailgr...@gmail.com wrote:
  I'm not sure if you are overcomplicating this by trying to use Unix
  permission.  Have you instead considered webdav?  You can restrict this
  to particular (apache) users/groups, directories, files.  It also uses
  lockfiles so with two users editing a file simultaneously will cause a
  warning when you try to save it.
 
  How does webdav relate to something like subversion?  Do they
  compliment each other or are they substitutes?
 
  - Grant
 
  WebDAV has no version control. It is just an extension to HTTP for
   distributed authoring. It supports locking files and methods which make
  it more filesystem-like. AFAIK SVN uses WebDAV for its HTTP transfer
  protocol.

 Got it.  It sounds like I could use WebDAV in conjunction with
 subversion or git.  I'll look into that.

 The reason I mentioned webdav(s) earlier was because you can have granular
 control of what each user can access.  You need specify only what
 directory/file you want them to be able to access and they shouldn't have
 access to anything else.

 I believe the same is accomplished through the use of subversion's
 path-based authorization.

 Also, you don't need to give them shell access - which I find
 (psychologically) more reassuring.  ;-)

 I like that a lot.  The way I understand it, in order to edit a file
 with subversion, you would check out the file from the repository to
 your local machine, edit it on your local machine, and commit your
 changes to the repository.  How does the workflow change with webdav?

It doesn't need to. From the user's perspective, the URI to the repo
changes. That's pretty much it. (I.e. we went from
svn://servername/path to https://servername/svn/path )

-- 
:wq



Re: [gentoo-user] {OT} Computers and mental/emotional health

2011-10-03 Thread Matthew Marlowe

 Has anyone dealt with this successfully?  I'd love to
 know how you did it.


You're right to worry about thisand I suspect it's also aging
related.  The older I get, the more sensitive I am to how many
hours/day is healthy.

I don't think there is a perfect solution, especially as more and more
important things in life require an internet device of some kind.
It's not uncommon for me to spend 2-3hrs researching something, up to
8hrs working, and then have 2 hrs of other emails/social/community
stuff all in one day that involve computers.
12 hours/day in a roughly fixed position indoors is never ever going
to be healthy.  Especially if it must be kept up for years and years
as one gets older.

So, I've gathered ideas from others and have come up with my own
recommendations:
a) avoid going to the computer if you can be doing something else and
don't need to be there (once I'm at a computer, there is always
something that can make me stay there so avoiding being there in first
place is important)
b) stand up and take brief walks for whatever at least once/hour while working
c) recent research suggests that taking vitamin d tablets starting in
ones thirties can have a significant impact on relieving some of the
sunlight/lack of being outdoor issues
d) try to go to the gym or do some signficant exercise to start the
day, this can possibly trick your metabolism to run faster all day
long
e) what many people do, I find, is simply have days where you don't
touch the computer (briefly check cell phone but thats it)
f) try to find something in your daily routine that will take you
outdoors for at least an hour/day, preferably longer (can be harder
for those of us who telecommute)
g) try to build regular activities with your family/friends that
involve outdoor recreation (build a home pool/take up swimming
laps/etc)

Nothing will completely remove the fact that modern life is
increasingly unhealthy, but the above is at least a good start.

Matt
--
Matthew Marlowe
m...@professionalsysadmin.com
Senior Internet Infrastructure Consultant         DevOps/VMware/SysAdmin
https://www.twitter.com/deploylinux                       Gentoo Linux Dev

           Courage is not simply one of the virtues, but the form
              of every virtue at the testing point.  -- C.S. Lewis



Re: [gentoo-user] {OT} Computers and mental/emotional health

2011-10-03 Thread Pandu Poluan
On Oct 4, 2011 7:01 AM, Matthew Marlowe m...@professionalsysadmin.com
wrote:

 
  Has anyone dealt with this successfully?  I'd love to
  know how you did it.
 

 You're right to worry about thisand I suspect it's also aging
 related.  The older I get, the more sensitive I am to how many
 hours/day is healthy.

 I don't think there is a perfect solution, especially as more and more
 important things in life require an internet device of some kind.
 It's not uncommon for me to spend 2-3hrs researching something, up to
 8hrs working, and then have 2 hrs of other emails/social/community
 stuff all in one day that involve computers.
 12 hours/day in a roughly fixed position indoors is never ever going
 to be healthy.  Especially if it must be kept up for years and years
 as one gets older.

 So, I've gathered ideas from others and have come up with my own
 recommendations:
 a) avoid going to the computer if you can be doing something else and
 don't need to be there (once I'm at a computer, there is always
 something that can make me stay there so avoiding being there in first
 place is important)
 b) stand up and take brief walks for whatever at least once/hour while
working
 c) recent research suggests that taking vitamin d tablets starting in
 ones thirties can have a significant impact on relieving some of the
 sunlight/lack of being outdoor issues
 d) try to go to the gym or do some signficant exercise to start the
 day, this can possibly trick your metabolism to run faster all day
 long
 e) what many people do, I find, is simply have days where you don't
 touch the computer (briefly check cell phone but thats it)
 f) try to find something in your daily routine that will take you
 outdoors for at least an hour/day, preferably longer (can be harder
 for those of us who telecommute)
 g) try to build regular activities with your family/friends that
 involve outdoor recreation (build a home pool/take up swimming
 laps/etc)

 Nothing will completely remove the fact that modern life is
 increasingly unhealthy, but the above is at least a good start.

If I may add: try a cup of normal (i.e. non-decaf) coffee about 1 hour after
you start using the computer.

I recently read in the newspaper that 2-4 cups of caf coffee per day
significantly reduce the chance of getting a depression.

Rgds,


Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Walter Dnes
On Mon, Oct 03, 2011 at 12:03:47PM -0700, Canek Pel??ez Vald??s wrote

 They have the advantage over UUID's in that you can set them and
 therefore can be human readable. Also, if you use a desktop
 environment, they look nice in file managers.

  I assume that name clashes can be avoided by using hostname-label.  My
question is... are there any circumstances where you can use UUIDs but
not labels, or visa versa?  If so, I'd prefer to go with the more robust
option from day 1, rather than switch later.

-- 
Walter Dnes waltd...@waltdnes.org



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 7:25 PM, Walter Dnes waltd...@waltdnes.org wrote:
 On Mon, Oct 03, 2011 at 12:03:47PM -0700, Canek Pel??ez Vald??s wrote

 They have the advantage over UUID's in that you can set them and
 therefore can be human readable. Also, if you use a desktop
 environment, they look nice in file managers.

  I assume that name clashes can be avoided by using hostname-label.  My
 question is... are there any circumstances where you can use UUIDs but
 not labels, or visa versa?  If so, I'd prefer to go with the more robust
 option from day 1, rather than switch later.

You can use whatever you want whenever you want. They are orthogonal.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Dale

Walter Dnes wrote:

On Mon, Oct 03, 2011 at 12:03:47PM -0700, Canek Pel??ez Vald??s wrote


They have the advantage over UUID's in that you can set them and
therefore can be human readable. Also, if you use a desktop
environment, they look nice in file managers.

   I assume that name clashes can be avoided by using hostname-label.  My
question is... are there any circumstances where you can use UUIDs but
not labels, or visa versa?  If so, I'd prefer to go with the more robust
option from day 1, rather than switch later.



From what I know, they both seem to travel well.  If you remove a drive 
and take it to another system, the UUID and LABELS will go with it.  
LABELS can be shorter and easier on the human to read tho.  I see that 
as a positive that UUID doesn't have.


Dale

:-)  :-)



Re: [gentoo-user] Strange partition on USB stick

2011-10-03 Thread Adam Carter
If the data is important, I'd use ddrescue to create an image of the
drive, then run testdisk over that image to see if it can untangle the
partition table mess. Both are in portage.



[gentoo-user] What is the most error resistant filesystem?

2011-10-03 Thread Pandu Poluan
Hello people!

Now, I have the same question as this guy:

https://bbs.archlinux.org/viewtopic.php?id=66651

I.e., what is the most robust filesystem for Linux?

The box will be used as a gateway/firewall for a branch office, so I really
couldn't care less about filesystem performance. But the utility power there
is horrendous, so I need something that can shrug off a catastrophic power
loss, and/or very fast fsck.

I'd also appreciate any tips on mount options to further enhance robustness.

TIA!

Rgds,


Re: [gentoo-user] {OT} Computers and mental/emotional health

2011-10-03 Thread Michael Orlitzky
On 10/03/2011 10:19 PM, Pandu Poluan wrote:
 
 
 If I may add: try a cup of normal (i.e. non-decaf) coffee about 1 hour
 after you start using the computer.
 

Ok, but how do you survive the first hour?




Re: [gentoo-user] What is the most error resistant filesystem?

2011-10-03 Thread Michael Mol
On Mon, Oct 3, 2011 at 11:47 PM, Pandu Poluan pa...@poluan.info wrote:
 Hello people!

 Now, I have the same question as this guy:

 https://bbs.archlinux.org/viewtopic.php?id=66651

 I.e., what is the most robust filesystem for Linux?

 The box will be used as a gateway/firewall for a branch office, so I really
 couldn't care less about filesystem performance. But the utility power there
 is horrendous, so I need something that can shrug off a catastrophic power
 loss, and/or very fast fsck.

ISO9660? Read-only, error correction, and have logging go over the
network to something else.

(Well, ISO9660 isn't required; any read-only media with a read-only
filesystem would probably do.)

-- 
:wq



Re: [gentoo-user] {OT} Development framework with access restriction?

2011-10-03 Thread Michael Orlitzky
On 10/03/2011 05:54 PM, Grant wrote:
 
 Would multiple repos work in a scenario where different developers
 have access to different stuff and some stuff should be accessible to
 multiple devs?  I don't think you want the same stuff in more than one
 repo.  It seems like managing multiple repos would get out of hand in
 that sort of situation and I might be better off with config files and
 a single repo.

(for the tl;dr, see the last paragraph)

Subversion separates authentication and authorization:

http://svnbook.red-bean.com/en/1.6/svn.serverconfig.svnserve.html#svn.serverconfig.svnserve.auth

You'll hear security people say that a lot, but hopefully an example
makes the difference clear. I'll use Apache in my example, because
that's what we use, and I'm mostly sure I'm not talking out of my ass
this way =)

The authentication part is your usernames and passwords.
Authentication is proving who you are. Each developer has his own
username and password -- these only need to be stored once. When you go
the Apache route, Apache itself controls the authentication. In the
website definition, we have,


  # The SVN root which lists all repos, assuming you're allowed to do
  # that. This would be offered up as e.g. https://svn.example.org/
  #
  Location /
Allow from all
DAV svn
SVNParentPath /var/svn/repos
SVNListParentPath on
AuthType Basic
AuthName Subversion Repository
AuthUserFile /var/svn/auth/svnusers
Require valid-user
SSLRequireSSL
  /Location


  # Accessible via https://svn.example.org/repo1
  #
  Location /repo1
Allow from all
DAV svn
AuthType Basic
AuthName Repository One
AuthUserFile /var/svn/auth/svnusers
AuthzSVNAccessFile /var/svn/auth/authz-repo1
Require valid-user
SSLRequireSSL
  /Location


  # Accessible via https://svn.example.org/repo2
  #
  Location /repo2
Allow from all
DAV svn
AuthType Basic
AuthName Repository Two
AuthUserFile /var/svn/auth/svnusers
AuthzSVNAccessFile /var/svn/auth/authz-repo2
Require valid-user
SSLRequireSSL
  /Location


You'll notice that both repos (and the root) use the same AuthUserFile.
That's just an Apache 'htpasswd2' file with usernames and encrypted
passwords. Some of our developers have access to every repo, but they
still go in that file just once.

The authorization part defines what you're allowed to do once you've
authenticated (i.e. we know who you are). Apache calls this authz as
opposed to auth everywhere, and is a subtle distinction that took me
embarrassingly long to realize.

Each Subversion repository can have its own AuthzSVNAccessFile, and that
format is specified somewhere in the Subversion book. Basically, you
list which users (from the AuthUserFile) can do what. In the example
above, the two repos use different authorization files, because our devs
have different permissions in repo1 than they do in repo2.

So, to answer your question: you separate your projects into
repositories logically, in whatever way makes sense. Then, you define
users and permissions to match that. The authentication and
authorization are flexible enough that you shouldn't have to duplicate
anything.



Re: [gentoo-user] What is the most error resistant filesystem?

2011-10-03 Thread Hilco Wijbenga
On 3 October 2011 20:47, Pandu Poluan pa...@poluan.info wrote:
 Hello people!

 Now, I have the same question as this guy:

 https://bbs.archlinux.org/viewtopic.php?id=66651

 I.e., what is the most robust filesystem for Linux?

The *most* robust? Probably something seriously expensive from IBM or similar.

I'd go with ReiserFS or Ext3. Both are very good. I use ReiserFS
pretty much everywhere. No running-out-of-inode problems with ReiserFS
so I prefer it over Ext3.

 The box will be used as a gateway/firewall for a branch office, so I really
 couldn't care less about filesystem performance. But the utility power there
 is horrendous, so I need something that can shrug off a catastrophic power
 loss, and/or very fast fsck.

Then why not simply use a LiveCD like OpenWall? Unbreakable file
system as it's all read-only (or RAM). Can't beat read-only. :-)



Re: [gentoo-user] What is the most error resistant filesystem?

2011-10-03 Thread Pandu Poluan
On Oct 4, 2011 11:30 AM, Michael Mol mike...@gmail.com wrote:

 On Mon, Oct 3, 2011 at 11:47 PM, Pandu Poluan pa...@poluan.info wrote:
  Hello people!
 
  Now, I have the same question as this guy:
 
  https://bbs.archlinux.org/viewtopic.php?id=66651
 
  I.e., what is the most robust filesystem for Linux?
 
  The box will be used as a gateway/firewall for a branch office, so I
really
  couldn't care less about filesystem performance. But the utility power
there
  is horrendous, so I need something that can shrug off a catastrophic
power
  loss, and/or very fast fsck.

 ISO9660? Read-only, error correction, and have logging go over the
 network to something else.

 (Well, ISO9660 isn't required; any read-only media with a read-only
 filesystem would probably do.)

Indeed that thought occurred in my mind. But I still need to keep some logs,
and have read-write access to /etc

Rgds,


Re: [gentoo-user] What is the most error resistant filesystem?

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 9:34 PM, Pandu Poluan pa...@poluan.info wrote:

 On Oct 4, 2011 11:30 AM, Michael Mol mike...@gmail.com wrote:

 On Mon, Oct 3, 2011 at 11:47 PM, Pandu Poluan pa...@poluan.info wrote:
  Hello people!
 
  Now, I have the same question as this guy:
 
  https://bbs.archlinux.org/viewtopic.php?id=66651
 
  I.e., what is the most robust filesystem for Linux?
 
  The box will be used as a gateway/firewall for a branch office, so I
  really
  couldn't care less about filesystem performance. But the utility power
  there
  is horrendous, so I need something that can shrug off a catastrophic
  power
  loss, and/or very fast fsck.

 ISO9660? Read-only, error correction, and have logging go over the
 network to something else.

 (Well, ISO9660 isn't required; any read-only media with a read-only
 filesystem would probably do.)

 Indeed that thought occurred in my mind. But I still need to keep some logs,
 and have read-write access to /etc

Set / to read-only and put /var in another partition. When you need to
modify /etc, you remount / rw, modify, and then remount rw. A a
gateway/firewall should not need config changes very often.

With a ro filesystem, it doesn't really matter what filesystem do you use.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Spidey
Windows gives partitions shorter UUID's too, so that's a non-standard thing
on your /etc/fstab. I opted for LABELs.
By the way, is it possible to use LABELs without and initrd? I'll start
using an initrd before too long, I'll also mess with decorations, but for
now, I'd like to keep my setup simple, no initrd.

--Spidey


Re: [gentoo-user] What is the most error resistant filesystem?

2011-10-03 Thread Michael Orlitzky
On 10/03/2011 11:47 PM, Pandu Poluan wrote:
 Hello people!
 
 Now, I have the same question as this guy:
 
 https://bbs.archlinux.org/viewtopic.php?id=66651
 
 I.e., what is the most robust filesystem for Linux?
 
 The box will be used as a gateway/firewall for a branch office, so I
 really couldn't care less about filesystem performance. But the utility
 power there is horrendous, so I need something that can shrug off a
 catastrophic power loss, and/or very fast fsck.
 
 I'd also appreciate any tips on mount options to further enhance robustness.

Journaling filesystems are as safe as you'll get on commodity hardware.
I would choose ext4 because I'm familiar with it, but I'm sure others
offer the same options. It's also got the fastest fsck that I'm aware of.

From `man tune2fs`:

  journal_data
When the filesystem is mounted with journalling
enabled, all data (not just metadata) is committed into
the journal prior to being written into the main
filesystem.


  block_validity

(I haven't used this, but spotted it in the man page)

The file system will be mounted with the block_validity
option enabled, which causes extra checks to be per‐
formed after reading or writing from the file system.
This prevents corrupted metadata blocks from causing
file system damage by overwriting parts of the inode
table or block group descriptors. This comes at the
cost of increased memory and CPU overhead, so it is
enabled only for debugging purposes. (This option is
currently only supported by the ext4 file system driver
in 2.6.35+ kernels.)





Re: [gentoo-user] Blank screen in X, no errors in Xorg.log

2011-10-03 Thread Spidey
On Mon, Oct 3, 2011 at 19:01, Adam Carter adamcart...@gmail.com wrote:

 FYI, this is fixed. I ran 'strace startx  startx.strace.out 21' and
 this showed;
 /usr/bin/X: symbol lookup error:
 /usr/lib64/xorg/modules/drivers/fglrx_drv.so: undefined symbol:
 GlxInitVisuals2D

 Which means that i forget to eselect opengl set 1, though it wasn't
 logged to Xorg.0.log (so it was logged to STDOUT, but i couldn't see
 that as the screen was blank).

 Then after fixing that;
 which: no keychain in

 (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.3)
 /etc/X11/xinit/xinitrc: line 63: exec: xterm: not found
 /etc/X11/xinit/xinitrc: line 61: xterm: command not found
 xinit: connection to X server lost

 So i emerged keychain and xterm and it now works. Of course i didn't
 need xterm as i'm running gnome, so i could have just kicked that off
 instead.


The default xinitrc or something starts twm, xterm and xclock or something
like that, that's normal behavior for first time X.org users. You can toggle
that to your needs, or you emerge gnome and add gdm to your default
runlevel, and forget about startx.

About what kernel configurations you have to check and what you have to make
sure to not have checked, you can see it here:
http://en.gentoo-wiki.com/wiki/Fglrx
You'll want to disable everything related to DRM, basically.

Claudio Roberto França Pereira (a.k.a. Spidey)
hardMOB - HTForum - @spideybr
Engenharia de Computação - UFES 2006/1


Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 9:54 PM, Spidey spide...@gmail.com wrote:
 Windows gives partitions shorter UUID's too, so that's a non-standard thing
 on your /etc/fstab. I opted for LABELs.
 By the way, is it possible to use LABELs without and initrd? I'll start
 using an initrd before too long, I'll also mess with decorations, but for
 now, I'd like to keep my setup simple, no initrd.

Yeah, labels are a feature of mount, an initramfs (really, totally
different from an initrd) has nothing to do with it.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Adam Carter
 By the way, is it possible to use LABELs without and initrd? I'll start
 using an initrd before too long, I'll also mess with decorations, but for
 now, I'd like to keep my setup simple, no initrd.

AND what bootloaders can use LABEL/UUID? Can grub's device.map use them?



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 10:02 PM, Adam Carter adamcart...@gmail.com wrote:
 By the way, is it possible to use LABELs without and initrd? I'll start
 using an initrd before too long, I'll also mess with decorations, but for
 now, I'd like to keep my setup simple, no initrd.

 AND what bootloaders can use LABEL/UUID? Can grub's device.map use them?

I believe grub uses its own partition scheme (hd(0,0)), so fstab
should not matter to it unless you use the root= option. But even with
the root= option, grub can understand labels, and so grub2 (I'm using
it with labels right now).

LILO I don't know, I haven't used it in years.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Paul Hartman
On Tue, Oct 4, 2011 at 12:02 AM, Adam Carter adamcart...@gmail.com wrote:
 By the way, is it possible to use LABELs without and initrd? I'll start
 using an initrd before too long, I'll also mess with decorations, but for
 now, I'd like to keep my setup simple, no initrd.

 AND what bootloaders can use LABEL/UUID? Can grub's device.map use them?

I think you need to use grub2 for that.



Re: [gentoo-user] Strange partition on USB stick

2011-10-03 Thread Mick
On Tuesday 04 Oct 2011 04:39:45 Adam Carter wrote:
 If the data is important, I'd use ddrescue to create an image of the
 drive, then run testdisk over that image to see if it can untangle the
 partition table mess. Both are in portage.

Well, that's the thing:  I'm not sure that there is a mess.  At least not as 
far as parted is concerned, which can read the partition table properly.  

I suspect that fdisk (unlike parted) is not capable of reading the device 
correctly.

I forgot to say that when mounted the USB stick shows not partitions (i.e. 
there is no sdb1, sdb2, etc.)  To access the fs I must do something like:

pmount /dev/sdb

and then all is lists under /media/sdb.  It is like a big floppy.
-- 
Regards,
Mick


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Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 10:10 PM, Paul Hartman
paul.hartman+gen...@gmail.com wrote:
 On Tue, Oct 4, 2011 at 12:02 AM, Adam Carter adamcart...@gmail.com wrote:
 By the way, is it possible to use LABELs without and initrd? I'll start
 using an initrd before too long, I'll also mess with decorations, but for
 now, I'd like to keep my setup simple, no initrd.

 AND what bootloaders can use LABEL/UUID? Can grub's device.map use them?

 I think you need to use grub2 for that.

You are right: for grub-legacy you need to use the old hd(x,y) thingy.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] What is the most error resistant filesystem?

2011-10-03 Thread Paul Hartman
On Mon, Oct 3, 2011 at 10:47 PM, Pandu Poluan pa...@poluan.info wrote:
 The box will be used as a gateway/firewall for a branch office, so I really
 couldn't care less about filesystem performance. But the utility power there
 is horrendous, so I need something that can shrug off a catastrophic power
 loss, and/or very fast fsck.

I've lost XFS and JFS filesystems in the past due to their failure to
recover after sudden power loss. Ext3/4 have not failed me (yet).

But my question is, why don't you use a UPS and monitoring software to
perform a proper (clean) shutdown when power's off and battery is
running low. Some UPS also support automatic power-on once things are
normal again, in case this is an unattended box that locals can't be
bothered with rebooting themselves.

I can think of making a complicated system with read-only boot media
(cd/dvd/mmc/whatever) which attempts recovery of important data (logs
created since last backup) to a spare partition, RAM drive or the
Internet, then repartitions  reinstalls itself to the harddrive and
restores the recovered data. Optionally downloading updated configs
from Internet. (think kiosk distros).



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Adam Carter
 You are right: for grub-legacy you need to use the old hd(x,y) thingy.

Which i assume suffers from the same reassignment risk as the kernel's
/dev/sdX naming that prompted this discussion. Looks I'll be moving to
grub2.



Re: [gentoo-user] Strange partition on USB stick

2011-10-03 Thread Paul Hartman
On Tue, Oct 4, 2011 at 12:18 AM, Mick michaelkintz...@gmail.com wrote:
 On Tuesday 04 Oct 2011 04:39:45 Adam Carter wrote:
 If the data is important, I'd use ddrescue to create an image of the
 drive, then run testdisk over that image to see if it can untangle the
 partition table mess. Both are in portage.

 Well, that's the thing:  I'm not sure that there is a mess.  At least not as
 far as parted is concerned, which can read the partition table properly.

 I suspect that fdisk (unlike parted) is not capable of reading the device
 correctly.

 I forgot to say that when mounted the USB stick shows not partitions (i.e.
 there is no sdb1, sdb2, etc.)  To access the fs I must do something like:

 pmount /dev/sdb

 and then all is lists under /media/sdb.  It is like a big floppy.

I think that's your answer. The partition table looks funny because
it isn't one. :) It is somewhat common. I've had some myself that are
like that.



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 10:25 PM, Adam Carter adamcart...@gmail.com wrote:
 You are right: for grub-legacy you need to use the old hd(x,y) thingy.

 Which i assume suffers from the same reassignment risk as the kernel's
 /dev/sdX naming that prompted this discussion. Looks I'll be moving to
 grub2.

That's a good idea anyway, given that grub is in life support by its
maintainers.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Florian Philipp
Am 04.10.2011 07:09, schrieb Canek Peláez Valdés:
 On Mon, Oct 3, 2011 at 10:02 PM, Adam Carter adamcart...@gmail.com wrote:
 By the way, is it possible to use LABELs without and initrd? I'll start
 using an initrd before too long, I'll also mess with decorations, but for
 now, I'd like to keep my setup simple, no initrd.

 AND what bootloaders can use LABEL/UUID? Can grub's device.map use them?
 
 I believe grub uses its own partition scheme (hd(0,0)), so fstab
 should not matter to it unless you use the root= option. But even with
 the root= option, grub can understand labels, and so grub2 (I'm using
 it with labels right now).
 
 LILO I don't know, I haven't used it in years.
 
 Regards.

In my experience, grub's partition numbering is more stable than /dev.
hd(0,*) tends to be the device on which grub is installed, even if
device numbering in /dev changes.

The more tricky stuff is defining the root=/dev/* kernel parameter.
Fortunately, starting with 2.6.37, you can use a UUID here as well (but
not label, that support was removed a few years ago):
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b5af921ec02333e943efb59aca4f56b78fc0e100

Regards,
Florian Philipp



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Re: [gentoo-user] Re: Hard drives not detected in repeatable order.

2011-10-03 Thread Canek Peláez Valdés
On Mon, Oct 3, 2011 at 10:29 PM, Florian Philipp li...@binarywings.net wrote:
 Am 04.10.2011 07:09, schrieb Canek Peláez Valdés:
 On Mon, Oct 3, 2011 at 10:02 PM, Adam Carter adamcart...@gmail.com wrote:
 By the way, is it possible to use LABELs without and initrd? I'll start
 using an initrd before too long, I'll also mess with decorations, but for
 now, I'd like to keep my setup simple, no initrd.

 AND what bootloaders can use LABEL/UUID? Can grub's device.map use them?

 I believe grub uses its own partition scheme (hd(0,0)), so fstab
 should not matter to it unless you use the root= option. But even with
 the root= option, grub can understand labels, and so grub2 (I'm using
 it with labels right now).

 LILO I don't know, I haven't used it in years.

 Regards.

 In my experience, grub's partition numbering is more stable than /dev.
 hd(0,*) tends to be the device on which grub is installed, even if
 device numbering in /dev changes.

 The more tricky stuff is defining the root=/dev/* kernel parameter.
 Fortunately, starting with 2.6.37, you can use a UUID here as well (but
 not label, that support was removed a few years ago):
 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b5af921ec02333e943efb59aca4f56b78fc0e100

Mmmh. This overrides the root option from grub? Then it will also work in LILO.

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México



[gentoo-user] Kernel source servers compromised?

2011-10-03 Thread Mick
Fair enough, but chkrootkit is not the most maintained package.  Last version 
was released in July 2009.

http://www.theregister.co.uk/2011/10/04/linux_repository_res/
-- 
Regards,
Mick


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Re: [gentoo-user] Kernel source servers compromised?

2011-10-03 Thread Nilesh Govindarajan
On Tue 04 Oct 2011 11:11:22 AM IST, Mick wrote:
 Fair enough, but chkrootkit is not the most maintained package.  Last version 
 was released in July 2009.

 http://www.theregister.co.uk/2011/10/04/linux_repository_res/

This is a quite old news and since then Linus has moved the kernel to 
github

-- 
Nilesh Govindarajan
http://nileshgr.com