lheck...@users.sourceforge.net wrote:
Do you have anything running that would try to read all the files and build a
search index - like beagle? There's also the nightly run of updatedb but that
just reads the filenames and normally nfs mounts are excluded.
There is no package beagle
I used to manage ~150 Linux desktop and would have to do one off scripts
to make updates. Fortunately I found Puppet and now I never have to do
things like this any more but here's the Bash/Expect combo that I used
to use:
chris$ ./mass_copy.sh:
#!/bin/sh
export ROOTPW='secret1'
export
easier to use.
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) on sandboxing functionality and constant policy adjustments
over the past few years. If it were worth it, it'd be a lot easier to just
say, shift the burden to the user, and make them pick a 10 character
password.
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On Tue, Feb 10, 2015 at 9:12 PM, John R Pierce pie...@hogranch.com wrote:
On 2/10/2015 6:54 PM, Chris Murphy wrote:
Why I avoid swap on md raid 1/10 is because of the swap caveats listed
under man 4 md. Is possible for a page in memory to change between the
writes to the two md devices
a $40 book on Amazon, chances are each author is
making much less than $1 in royalties per book. So who's being ripped
off the most by downloading a bootleg PDF? The publisher. The authors
aren't being injured that much.
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like this, then I get to say you sir, may kindly kiss my ass.
Legal point 7: You are unproductively using your own, and other's, time,
interest and energy.
So are you, and this is your informal invitation to stop.
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On Tue, Feb 10, 2015 at 1:13 PM, Les Mikesell lesmikes...@gmail.com wrote:
On Tue, Feb 10, 2015 at 1:54 PM, Chris Murphy li...@colorremedies.com wrote:
- I would not put swap on an md device, I'd just put a plain swap
partition on each device; first create two swap mountpoints,
If one
bought an
ebook, not merely renting it, then I should have the right to give
that ebook to a library, school, friend, leave it in an estate to
children. And quite a number of publishers deny this doctrine applies
to ebooks. Not good.
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explanation. If there's no recent software changes,
then it must be hardware.
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on a many disk linear/concat arrangement. This extends
to using raid1 + linear instead of raid10 if some redundancy is
desired.
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a
hardware problem given the numerous identical setups not having this
problem. But, seeing as it panics every 30-40 hours, it can hardly be
much worse with a new kernel running for a couple days... but my bet
is there'd be no change.
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On Tue, Feb 17, 2015 at 7:34 PM, Jason Pyeron jpye...@pdinc.us wrote:
-Original Message-
From: Chris Murphy
Sent: Tuesday, February 17, 2015 20:48
On Tue, Feb 17, 2015 at 7:54 AM, Jason Pyeron wrote:
I'd post the entire dmesg somewhere
http://client.pdinc.us/panic
On Mon, Feb 16, 2015 at 10:21 AM, Chris Murphy li...@colorremedies.com wrote:
On Mon, Feb 16, 2015 at 6:47 AM, Eliezer Croitoru elie...@ngtech.co.il
wrote:
I am unsure I understand what you wrote.
XFS will create multiple AG's across all of those
devices,
Are you comparing md linear
drive at a time
(unless using one of the striping raid-like profiles).
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value in the lower left hand corner.
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On Thu, Feb 19, 2015 at 12:06 AM, John R Pierce pie...@hogranch.com wrote:
On 2/18/2015 9:39 PM, Chris Murphy wrote:
You might be a candidate for LVM integrated raid. It uses the md
kernel code on the backend, but it's all LVM tools to create, manage
and monitor. The raid level is defined per
that the user
expectations re-align with the end goal in mind, not how to get there.
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On Wed, Feb 18, 2015 at 3:37 PM, Niki Kovacs i...@microlinux.fr wrote:
Le 18/02/2015 23:12, Chris Murphy a écrit :
installer is organized around mount points is correct, and what gets
mounted on mount points? Volumes, not partitions.
Says who?
Because it's ambiguous. A partition might
a good
reason for it to be in X slot always, for everyone, including
anticipating future use, then that's a feature request and it ought to
get fixed. But if it's a specific use case, well yeah you get to
pre-partition and then install.
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. But for general purpose data, it's nice. It'll use
different sized drives in a raid56, no fuss, no having to tell it how
to do that. Online addition of yet another (unlike sized) drive and it
just starts using it with a single 'btrfs device add' command. No
restripe/resilver needed.
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and rollfoward.
http://www.projectatomic.io/
And another using btrfs send/receive images (not mentioned but could
instead use seed devices):
http://0pointer.net/blog/revisiting-how-we-put-together-linux-systems.html
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On Thu, Feb 19, 2015 at 3:28 AM, Niki Kovacs i...@microlinux.fr wrote:
Le 19/02/2015 11:03, Chris Murphy a écrit :
This is a false dichotomy. I reject it. There's too much fact to the
contrary. My mom has done an OS installation, she is most definitely
not an admin.
I'd say your mom
to change both user login and encryption passphrase passwords, to keep
them in sync, and remove the old one. And currently LUKS has this 8
slot limit, which is probably not a big problem, but might be a
sufficient barrier in enough cases that this needs extending.
And so on...
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or replace cables, usually it's the connectors that
are faulty not the cable itself. Or replace the drive.
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things right, they really face plant in
other areas. Most of their open source effort is languishing.
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On my first attempt doing this with 2x disk, GPT partition scheme,
precreated md devices, and LVM, rebooting, upon entering the installer
and choosing a language, I get a crash. Looks like it's this bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1103452
Chris Murphy
to understand the installer's UI is mount point
centric, it kinda deemphasizes the specifics of how that mount point
gets assembled.
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additional swap, making sure each is on its own drive.
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I'd like to think you will want to avoid the use of swap at almost all
costs because it'll slow the system down by a lot. So really you don't
need 1:1 for a server that isn't using suspend to disk. You only need
enough swap so that things can chug (slowly) without totally
imploding, giving you
A neat trick for a server with less than idea memory requirement
compared to the storage it has, is a pile of swap on an SSD. Having
xfs_repair use swap on SSD is a lot faster than its fallback behavior
when memory is low and there's no swap. Whereas swapping to a HDD...
brutal.
Chris Murphy
all of them. It's often quite a
bit better performing than raid0 specifically because of the many
thousands of small files in many directories workload.
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On Thu, Feb 19, 2015 at 1:38 PM, Kahlil Hodgson
kahlil.hodg...@dealmax.com.au wrote:
On 20 February 2015 at 05:25, Chris Murphy li...@colorremedies.com wrote:
I'd say your mom is an admin in the sense that chickens fly and horses swim.
It's a confusing analogy. Chickens don't fly. Horses do
within need an fstab entry also if
you want them automounted.
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-48d0-a1b4-2e68c16a7cc4
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-analyze blame' to see if any particular unit file
is waiting for either the fs uuid or md uuid to appear. If so I'd
probably start with just rebuilding the initramfs with a 'dracut -f'.
I'd like to believe on-disk metadata can just be discovered
automatically but...
Chris Murphy
On Sat, Mar 7, 2015 at 5:23 PM, Chris Murphy li...@colorremedies.com wrote:
The grub.cfg should have a boot parameter mduuid which makes mdadm in
I'm not sure if grub2-mkconfig will automatically detect and add
mduuid to grub.cfg. You can try it. If not then you could add the
entry to the extra
and
associate them with mount points.
CentOS 7 installer UI, in Manual Partitioning you need to choose a
partition scheme first - probably in your case Standard Partitions.
And then you create the mount points, specifying size for each. The
underlying partitions are then created.
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no direct control over this, although you can create them in
advance outside the installer, and then assign mount points to
existing partitions.
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create, because that's where people get
into trouble the most with both sets of tools. This thread might help:
https://www.centos.org/forums/viewtopic.php?f=47t=51349
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/grub.cfg. That makes the ESP contents generic and never
modified again. And then the real grub.cfg is /boot/grub2/grub.cfg
which can of course then be on raid1 or raid 5 or whatever, and this
is the file that gets updated when there are kernel updates.
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on the best case chance for response and give it 24 hours.
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numblks 8
Out of what should have been 3.5GB of data in 1/, I was able to get 452MB.
That's not so bad for just a normal mount and copy. I am in fact
shocked the file system mounts, and stays mounted. Yay XFS.
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this is now a scraping operation with ext4.
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that I'm not testing: in-use
drive failure. I'm simulate drive failure by first cleanly unmounting
and powering off. Super ideal. How the file system and anything
underneath it (LVM and maybe RAID) handles drive failures while in
use, is a huge factor.
Chris Murphy
). The current type since CentOS 6.3
is raid1. But yes for anything raid4+ you previously had to create it
with mdadm or use hardware RAID (which of course you can still do,
most people still prefer managing software raid with mdadm than lvm's
tools).
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with 512n in a raid set.
Scrambled eggs mixed with yogurt? Offhand it doesn't seem like a bad
idea (won't kill me), even if it also may not be a good idea (sounds
suboptimal).
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, is probably why ntfs3-g isn't on the installer media.
On Fedora, that's a required based package because of explicit dual
boot support, and it's necessary because the installer uses ntfs-3g to
resize the Windows volume to make room for Fedora.
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On Mon, Mar 2, 2015 at 5:17 AM, Fred Smith
fre...@fcshome.stoneham.ma.us wrote:
Ah, perhaps I didn't think to mention that I was installing Centos
as a replacement for F19 (which is now EOL).
You did, I wasn't paying close enough attention. Sorry.
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finding Windows. What do you get
for the following commands:
# parted /dev/sdX u s p ##X= drive with windows on it
# os-prober
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. This is common in any case.
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there's a chance mdadm can assemble the array,
should the hardware card die.
Anyway, the main thing is knowing where the land mines are regardless
of what technology you pick. If you don't know where they are, you're
inevitably going to run into trouble with anything you choose.
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. I've always been suspicious of this choice.
(But now, even Apple does this on OS X by default, possibly as a
prelude to making full volume encryption a default - their LVM
equivalent implements encryption as an LV level attribute called
logical volume family.)
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bark about cross posting being worse than my bite.
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On Sat, Feb 28, 2015 at 5:14 PM, Chris Murphy li...@colorremedies.com wrote:
Drives, and hardware RAID cards are subject to firmware bugs, just as
we have software bugs in the kernel. makes no assessment of how
common such bugs are relative to each other.
I don't want to underestimate
is, you
want the newest GRUB binaries to be primary and usually that's Fedora. In
your case with CentOS 7 and Fedora 19 it's probably a draw. But as Fedora
19 is EOL, you probably want to fedup that system to Fedora 21 one of these
days :-D.
Chris Murphy
in the setup, things will just work again. *shrug* LVM linear
isn't designed to be fail safe in the face of a single device failure.
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of the windows installation.
Short solution:
Does /etc/default/grub contain 'GRUB_DISABLE_OS_PROBER=true ? If so,
comment that out and rerun the grub2-mkconfig command.
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, this is bad sign.
Agreed.
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The default for fdisk, parted, and gdisk is starting the first
partition on LBA 2048, which is 8 sector aligned. You don't need any
options. The alternative is to simply not partition the drives or the
resulting RAID and just format it.
Chris Murphy
it properly aligned.
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firewall-cmd --add-service=rsyncd
To make it permanent, do the above and this:
firewall-cmd --permanent --add-service=rsyncd
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getting the denials based on the
AVC message.
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On Wed, Feb 25, 2015 at 2:39 PM, Earl A Ramirez earlarami...@gmail.com wrote:
On Wed, 2015-02-25 at 16:33 -0500, m.r...@5-cent.us wrote:
Chris Murphy wrote:
firewall-cmd --add-service=rsyncd
firewall-cmd --add-service=rsyncd
Error: INVALID_SERVICE: rsyncd
Is there another place
: @System
So I can't tell you if this will work in your case and if there's some
way within firewall-cmd to create these service files or not.
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/wiki/Changes/Remote_Journal_Logging
https://kashyapc.fedorapeople.org/virt/lc-2012/snapshots-handout.html
Extra info: Anaconda uses this on lives to do installations (quite a
few of these options are consolidated with -a):
rsync -pogAXtlHrDx
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volume and mount this whereever you want it mounted.
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forget this
passphrase, and its only location is on the primary drive that's
already encrypted and that drive dies - then anything on the 2nd drive
cannot be decrypted. Oops. So be careful of that.
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, and
maybe it will also have extra messages from xfs_repair.
Does the HD need to be completely zero wiped if I do a fresh install?
No the installer uses a combination of wipefs, and will also zero some
important sections that sometimes cause problems down the road if they
aren't zero'd.
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On Mon, Mar 23, 2015 at 7:14 PM, Keith Keller
kkel...@wombat.san-francisco.ca.us wrote:
On 2015-03-23, Chris Murphy li...@colorremedies.com wrote:
For future reference -L is a big hammer. If you use it without
explicitly attempting a read-write mount (which a read only mount at
boot time
be a good idea to keep an ext4 /boot
too.
There's no advantage to it being ext4. The default installation for
Fedora 22 Server, CentOS/RHEL 7 is /boot on XFS, and / on a separate
XFS, and /home on a separate XFS. Just like with ext4, except with
XFS.
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to LVs.
For migrating VMs, it's easier if they're a file. And qcow2 snapshots
are more practical than LVM (thick) snapshots. The thin snapshots are
quite good though they take a lot of familiarity with setting them up.
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on Btrfs even
though I definitely don't hate LVM.
On desktop Linux, making LVM the default layout I think is a bad
decision. It causes mortal users more trouble than it's worth. I'd be
a bit more accommodating if LVM had integrated encryption with live
bi-directional conversion.
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for libvirt is probably causing
too aggressive flushes to disk and each flush is a separate extent.
Just a guess.
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Chris Adams linux at cmadams.net Wed Jun 24 13:14:34 UTC 2015
There are plenty of people that have documented the performance
differences, just Google it.
This is consistent with what I've experienced. Minimal difference.
http://web-docs.gsi.de/~tstibor/iozone/qcow.vs.lvm/
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On Fri, Jun 26, 2015 at 4:47 AM, Steve Clark scl...@netwolves.com wrote:
On 06/25/2015 06:44 PM, Chris Murphy wrote:
I did a bunch of testing of Raw, qcow2, and LV backed VM storage circa
Fedora 19/20 and found very little difference. What mattered most was
the (libvirt) cache setting
if you want to do software RAID and also use LVM thin
provisioning, you still need to use mdadm (or hardware RAID).
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On Fri, Jun 26, 2015 at 9:58 AM, Jonathan Billings billi...@negate.org wrote:
On Thu, Jun 25, 2015 at 01:27:47PM -0600, Chris Murphy wrote:
It's bad design. First, it's a nested mount: file system A on /, and
file system B on /boot, and file system C on /boot/efi. Therefore the
mount process
by default into the resulting free space.
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doesn't really support dual-boot anyway,
whereas Fedora does.
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things that can be done.
That is not dual boot support.
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On Fri, Jul 3, 2015 at 4:42 AM, Timothy Murphy gayle...@eircom.net wrote:
Chris Murphy wrote:
Supporting dual boot means ability to boot both installed OS's upon
completion of installing the second. This doesn't happen when the first OS
is Linux using LVM, or Windows, or OS X.
In that case
On Thu, Jul 2, 2015 at 2:43 AM, ken geb...@mousecar.com wrote:
On 07/01/2015 05:10 PM, Jonathan Billings wrote:
On Jul 1, 2015, at 12:20, Chris Murphy li...@colorremedies.com wrote:
My understanding is CentOS doesn't really support dual-boot anyway,
whereas Fedora does.
Nope. CentOS 5, 6
On Thu, Jul 2, 2015 at 4:06 PM, Warren Young w...@etr-usa.com wrote:
On Jul 2, 2015, at 9:51 AM, Chris Murphy li...@colorremedies.com wrote:
On 07/01/2015 05:10 PM, Jonathan Billings wrote:
Nope. CentOS 5, 6 and 7 all support dual-boot.
Considering CentOS 7, at least, doesn't include
On Thu, Jul 2, 2015 at 5:39 PM, Warren Young w...@etr-usa.com wrote:
On Jul 2, 2015, at 5:14 PM, Chris Murphy li...@colorremedies.com wrote:
I've suggested that the distribution doesn't support dual boot if it
has no hand in making it possible. The user doing this on their own
manually
On Thu, Jul 2, 2015 at 4:12 PM, Warren Young w...@etr-usa.com wrote:
On Jul 2, 2015, at 11:32 AM, Chris Murphy li...@colorremedies.com wrote:
On Thu, Jul 2, 2015 at 10:42 AM, ken geb...@mousecar.com wrote:
Yes, a
little manual work was needed on the Windows side, but this was well
On Thu, Jul 2, 2015, 11:05 PM Warren Young w...@etr-usa.com wrote:
On Jul 2, 2015, at 9:21 PM, Chris Murphy li...@colorremedies.com wrote:
CentOS doesn't support dual boot, because I did all the work to
make that happen, the CentOS installer did nothing to help me make
this possible
on free software are all valid, but it's
also valid when users just give up and use a different platform
because they don't have to deal with these sorts of problems.
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, degraded, if enough drives for
degraded operation are found.
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to convince it to retain that information. Presumably,
there's a file somewhere under /etc/sysconfig that should contain this
information - does anyone know where it should be stored?
I'd look at nmcli and see why the connection is not persistent.
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On Fri, Jun 26, 2015 at 8:47 PM, Jonathan Billings billi...@negate.org wrote:
On Fri, Jun 26, 2015 at 10:54:07AM -0600, Chris Murphy wrote:
This makes no sense to me. rEFInd dynamically discovers linux kernel
updates, it doesn't need any regular configuration file changes. Once
you configure
https://lwn.net/Articles/630778/
I think you definitely want this stuff as far away from the regular
LAN, let alone the Internet, as possible.
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-mkrescue.
http://www.gnu.org/software/grub/manual/grub.html#Invoking-grub_002dmkrescue
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these drives such that they have proper 8 sector alignment.
If you haven't already, check the logic board firmware and the HBA
firmware for current updates.
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be some use case for combining static and dynamic rules
(?) but I'd expect you should disable one or the other.
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it to ext4 ? Any pros / cons for it ?
Piles of pros, and no meaningful cons. Just use ext4 with defaults.
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common.
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