[arch-general] systemd fsck

[David Benfell]

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On 08/11/2012 04:09 AM, Mantas Mikulėnas wrote:
> On Sat, Aug 11, 2012 at 6:27 AM, David Benfell 
> <benfell at parts-unknown.org> wrote:
>> 2) But I did notice an error that worried me--just because it
>> looks worrying--as it came up:
>> 
>> Aug 09 13:34:36 graton systemd-fsck[270]: /dev/sda3 is mounted. 
>> Aug 09 13:34:36 graton systemd-fsck[270]: e2fsck: Cannot
>> continue, aborting. Aug 09 13:34:36 graton systemd-fsck[270]:
>> fsck failed with error code 8. Aug 09 13:34:36 graton
>> systemd-fsck[270]: Ignoring error. Aug 09 13:34:36 graton
>> systemd-fsck[289]: /dev/sdb1: clean, 398077/33554432 files,
>> 27916145/134217728 blocks Aug 09 13:34:36 graton
>> systemd-fsck[287]: /dev/sdb3: clean, 647214/21102592 files,
>> 26531961/84405504 blocks Aug 09 13:34:36 graton
>> systemd-fsck[348]: /dev/sda4: clean, 1650719/59490304 files,
>> 57620902/237931957 blocks Aug 09 13:34:37 graton
>> systemd-fsck[320]: /dev/sda1: clean, 33/10040 files, 22152/40160
>> blocks Aug 09 13:34:37 graton systemd-fsck[293]: /dev/sdb2:
>> clean, 4926903/67125248 files, 195736925/268500992 blocks
>> 
>> /dev/sda3 is the root partition.
> 
> Does your kernel have the "ro" option specified? I know little
> about this, but I think ext34 partitions cannot be checked while
> mounted read-write and the usual way of doing this for the root
> partition has been to add "ro" to the kernel command line, and to
> remount the root partition read-write after checking it. (Though
> running the check from initramfs might be an even better method,
> Arch here has an option for that.)
> 
You're absolutely right that ext{2,3,4} partitions need to be
read-only for fsck. The latter throws up a very scary warning if you
try to run it on a partition mounted read-write. Here's the kernel
line from /boot/grub/menu.lst (haven't converted to grub2 yet):

kernel /vmlinuz-linux
root=/dev/disk/by-uuid/a7f84383-2cc2-4d70-adb5-3bf909a3f99b loglevel=3
ro quiet splash
resume=/dev/disk/by-uuid/2d185a12-115f-4f93-99a3-bfca4d0fc216
init=/bin/systemd

- -- 
David Benfell
benfell at parts-unknown.org
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