Re: Partitioning 4GB with the Debian Installer

2008-08-28 Thread Pietro "m0nt0" Montorfano
arne anka ha scritto:
>> But why is ext3 not recommended for sd-card when compared to ext2?
> 
> i understood ist because of the additional wear caused by journalling.
>

Yes, in most cases ext3 is used improperly:
ext3 is basically ext2+journal.
This means that you are going to add some overhead to the data that you 
are writing (journal) producing more i/o gaining no new feature.
You are using no such feature because improperly unmounting an ext2 or 
ex3 partition will sort the same effect, you will lose your data.
Someone may say "hey but you got the journal", yes you've got it but 
where is it written? in the same place of the fs? usually yes, this 
means that if you unplug the sd the data and the journal are unplugged 
at the same time so your data are still lost. Well you can do something 
better mounting the journal in a different support but unplugging the sd 
will still result in a data lost, the inode and filesystem structure 
could survive because of the journal but the real data will be lost.
So after this explanation the advantages in using a journaled fs vs 
another one are so low that is not convenient.
This is what i've understood reading around, may be something is wrong 
but the idea should be something like that.

Pietro

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Re: Partitioning 4GB with the Debian Installer

2008-08-28 Thread Fox Mulder
arne anka wrote:
>> But why is ext3 not recommended for sd-card when compared to ext2?
> 
> i understood ist because of the additional wear caused by journalling.
> 
>> I played with debian on my sd card for over a week without any problems
>> so far concerning the sd-card. I hope i must not backup my rootfs and
>> reformat it to ext2. :)
> 
> well, ext3 is ext2+journal. should be sufficient to mount as ext2, i think.
> not sure about u-boot, though.


I know that ext2 issufficient but ext3 is the successor, so why stick
with the older ext2?
When ext3 makes much more accesses to the filesystem than ext2 you are
right that it is not the best choice for the limited lifecycle that a
flash medium has.
Maybe i should google a bit about this to find a comparision table for
ext2 against ext3 to make a better decision. :)

Ciao,
 Rainer

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Re: Partitioning 4GB with the Debian Installer

2008-08-28 Thread arne anka
> But why is ext3 not recommended for sd-card when compared to ext2?

i understood ist because of the additional wear caused by journalling.

> I played with debian on my sd card for over a week without any problems
> so far concerning the sd-card. I hope i must not backup my rootfs and
> reformat it to ext2. :)

well, ext3 is ext2+journal. should be sufficient to mount as ext2, i think.
not sure about u-boot, though.

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Re: Partitioning 4GB with the Debian Installer

2008-08-28 Thread Fox Mulder
arne anka wrote:
> secondly, the installer assumes ext2 imo, since etx3 is not recommended  
> for sd card.

That sounds interesting.
I partitioned my 8gb sd-card to use ext3 for the rootfs and added an
extra bootmenu entry for ext3.

But why is ext3 not recommended for sd-card when compared to ext2?

I played with debian on my sd card for over a week without any problems
so far concerning the sd-card. I hope i must not backup my rootfs and
reformat it to ext2. :)

Ciao,
 Rainer

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Re: Partitioning 4GB with the Debian Installer

2008-08-28 Thread arne anka
> but when I run './install all' I still get:
>
> Writing superblocks and filesystem accounting information:
> Warning, had trouble writing out superblocks.done

doesn't sound good.

> if I try './install mount' I get:
> [errors]

well, w/o superblocks mounting doesn't work

> Also, if I just end up partitioning this from my desktop machine, should
> I make a 8mb ext2 and the rest ext3?

for the installer that's the default, i guess. if you change the layout  
you will have to mount manually before proceeding, since the installer  
(imo) would not know about separate partitions for usr, var, ...
re the filesystems: the u-boot has an entry for fat+ext2 -- either you  
change taht/ add an entry for ext2+ext3 or you use fat+ext2.
secondly, the installer assumes ext2 imo, since etx3 is not recommended  
for sd card.

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Re: Partitioning 4GB with the Debian Installer

2008-08-27 Thread Greg Bonett
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Stefan Fröbe wrote:
> Depends on what you call straight-forward: you can search for 
> glamo_mci.sd_max_clk , a description can for instance be found at 
> http://docs.openmoko.org/trac/ticket/1743 :

> Basically you need to set this variable in the u-boot environment - I
> reduced it even down to 500 , but more might also work - ymmv.
> Whether setting this through /sys parameter works I do not know - does
> anyone know?
> 
>


Alright, I edited my uboot environment so that /proc/cmdline reads:

> glamo_mic.sd_max_clk=500 rootfstype=jffs2 root=/dev/mtdblock6
console=ttySAC2,115200 console=tty0 loglevel=4 regular_boot
mtdparts=physmap-flash:-(nor);neo1973-nand:0x0004(u-boot),0x0004(u-boot_env),0x0080(kernel),0x000a(splash),0x0004(factory),0x0f6a(rootfs)

but when I run './install all' I still get:

Writing superblocks and filesystem accounting information:
Warning, had trouble writing out superblocks.done

if I try './install mount' I get:

Running stage mount
Mounting the newly created system
mount: wrong fs type, bad option, bad superblock on /dev/mmcblk0p2,
   missing codepage or other error
   In some cases useful info is found in syslog - try
   dmesg | tail  or so


'dmesg | tail' reads:

end_request: I/O error, dev mmcblk0, sector 19752
end_request: I/O error, dev mmcblk0, sector 19760
end_request: I/O error, dev mmcblk0, sector 19768
end_request: I/O error, dev mmcblk0, sector 19776
end_request: I/O error, dev mmcblk0, sector 19784
glamo-mci glamo-mci.0: Error after cmd: 0x8020
mmcblk0: error -110 sending read/write command
end_request: I/O error, dev mmcblk0, sector 15682
EXT2-fs: unable to read superblock




Any ideas?  Thanks for the help.

Also, if I just end up partitioning this from my desktop machine, should
I make a 8mb ext2 and the rest ext3?

Thanks.

- -Greg

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Re: Partitioning 4GB with the Debian Installer

2008-08-22 Thread Stefan Fröbe
> > I found that lowering the glamo MMC clock by a factor of 1/2 repeatedly,
> > until I found a stable clock speed, worked fine for me.
> >
>
> I'm not sure how to do that.  Is it pretty straight forward?
>

Depends on what you call straight-forward: you can search for
glamo_mci.sd_max_clk
, a description can for instance be found at
http://docs.openmoko.org/trac/ticket/1743 :

Basically you need to set this variable in the u-boot environment - I
reduced it even down to 500 , but more might also work - ymmv. Whether
setting this through /sys parameter works I do not know - does anyone know?

Stefan
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Re: Partitioning 4GB with the Debian Installer

2008-08-22 Thread Greg Bonett

>
> I found that lowering the glamo MMC clock by a factor of 1/2 repeatedly,
> until I found a stable clock speed, worked fine for me.
>

I'm not sure how to do that.  Is it pretty straight forward?

Thanks.

-Greg


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Re: Partitioning 4GB with the Debian Installer

2008-08-21 Thread Asheesh Laroia
On Thu, 21 Aug 2008, Greg Bonett wrote:

> Alright, here it is...

> Writing superblocks and filesystem accounting information:

> Warning, had trouble writing out superblocks.done

I saw that too!

> Warning, had trouble writing out superblocks.done

I saw *that*, too! (-;

I found that lowering the glamo MMC clock by a factor of 1/2 repeatedly, 
until I found a stable clock speed, worked fine for me.

Now I make calls in Zhone! on Deviant GNU/Linux!

I mean, Debian.

-- Asheesh.

-- 
A new koan:
If you have some ice cream, I will give it to you.
If you have no ice cream, I will take it away from you.
It is an ice cream koan.

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Re: Partitioning 4GB with the Debian Installer

2008-08-21 Thread Greg Bonett
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Joachim Breitner wrote:
> Hi,
> 
> Am Donnerstag, den 21.08.2008, 15:48 -0500 schrieb Greg Bonett:
>> Unfortunately I'm working with the 512mb SD card that came with my FR
>> (install.sh had trouble partitioning my 4gb SDHC) so I haven't been able
>> to install too many aps
> 
> Actually, the install.sh should be able to handle that as well, at least
> theoretically. What problems did you have?


Alright, here it is...


When I run './install.sh all' it runs through the partition step (but
does not continue) and gives this output before quiting:



W: /dev/mmcblk0p1 is mounted, unmounting
1+0 records in
1+0 records out
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF
disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that the previous content
won't be recoverable.


The number of cylinders for this disk is set to 125440.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x00,0x00 of partition table 4 will be corrected
by w(rite)

Command (m for help): Command action
   e   extended
   p   primary partition (1-4)
Partition number (1-4): First cylinder (1-125440, default 1): Using
default value 1
Last cylinder or +size or +sizeM or +sizeK (1-125440, default 125440):
Command (m for help): Command action
   e   extended
   p   primary partition (1-4)
Partition number (1-4): First cylinder (246-125440, default 246): Using
default value 246
Last cylinder or +size or +sizeM or +sizeK (246-125440, default 125440):
Using default value 125440

Command (m for help): The partition table has been altered!

Calling ioctl() to re-read partition table
 * Waiting for partitions to appear
 * Partition table created
W: /dev/mmcblk0p1 is mounted, unmounting
 * Formatting the microSD card partitions
mke2fs 1.38 (30-Jun-2005)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
1960 inodes, 7832 blocks
391 blocks (4.99%) reserved for the super user
First data block=1
1 block group
8192 blocks per group, 8192 fragments per group
1960 inodes per group

Writing inode tables: done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 34 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
mke2fs 1.38 (30-Jun-2005)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
500960 inodes, 1001560 blocks
50078 blocks (5.00%) reserved for the super user
First data block=0
31 block groups
32768 blocks per group, 32768 fragments per group
16160 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736

Writing inode tables: done
Writing superblocks and filesystem accounting information:
Warning, had trouble writing out superblocks.done

This filesystem will be automatically checked every 33 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.



If I try and run './install.sh mount' I get the following error:


Running stage mount
Mounting the newly created system
mount: wrong fs type, bad option, bad superblock on /dev/mmcblk0p2,
   missing codepage or other error
   In some cases useful info is found in syslog - try
   dmesg | tail  or so


dmesg | tail gives:

glamo-mci glamo-mci.0: Error after cmd: 0x20
mmcblk0: error -110 sending read/write command
end_request: I/O error, dev mmcblk0, sector 0
glamo-mci glamo-mci.0: Error after cmd: 0x8020
mmcblk0: error -110 sending read/write command
end_request: I/O error, dev mmcblk0, sector 0
glamo-mci glamo-mci.0: Error after cmd: 0x20
mmcblk0: error -110 sending read/write command
end_request: I/O error, dev mmcblk0, sector 1568
EXT2-fs: unable to read superblock


I'm pretty sure this has something to do with th
e problem:

 Warning, had trouble writing out superblocks.done

(from initial ./install.sh all output)


Thanks for taking a look at this.
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Swap Space was Re: Partitioning 4GB with the Debian Installer

2008-08-21 Thread clare johnstone
On Fri, Aug 22, 2008 at 5:02 AM, Joachim Breitner <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Actually, the install.sh should be able to handle that as well, at least
> theoretically. What problems did you have?
>
> Greetings,
> Joachim


When the installer partitions the disk, why does it not supply a swap
partition? Is it needed or not needed by Debian?
thanks
clare

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Partitioning 4GB with the Debian Installer

2008-08-21 Thread Joachim Breitner
Hi,

Am Donnerstag, den 21.08.2008, 15:48 -0500 schrieb Greg Bonett:
> Unfortunately I'm working with the 512mb SD card that came with my FR
> (install.sh had trouble partitioning my 4gb SDHC) so I haven't been able
> to install too many aps

Actually, the install.sh should be able to handle that as well, at least
theoretically. What problems did you have?

Greetings,
Joachim

-- 
Joachim "nomeata" Breitner
Debian Developer
  [EMAIL PROTECTED] | ICQ# 74513189 | GPG-Keyid: 4743206C
  JID: [EMAIL PROTECTED] | http://people.debian.org/~nomeata


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