Bug 438028 – sys-fs/quota - quotacheck: Cannot stat() mounted device /dev/root: No such file or directory

• Status: CONFIRMED
• Product: Gentoo Linux

[Description Andrew Savchenko 2012-10-11 19:13:51 UTC]

Hello,

I use quota-4.00, udev-194. After udev upgrade I can't use quotas on rootfs anymore:

# rc-config start quota
Starting init script
quota           | * Checking quotas (may take a while) ...
quota           |quotacheck: Cannot stat() mounted device /dev/root: No such file or directory
quota           |quotacheck: Cannot stat() mounted device /dev/root: No such file or directory
quota           |quotacheck: Cannot stat() mounted device /dev/root: No such file or directory
quota           |quotacheck: Cannot find filesystem to check or filesystem not mounted with quota option.                                                                     [ !! ]          |
quota           | * Starting quota ...
quota           |quotaon: Cannot stat() mounted device /dev/root: No such file or directory
quota           |quotaon: Cannot stat() mounted device /dev/root: No such file or directory
quota           |quotaon: Cannot stat() mounted device /dev/root: No such file or directory

# repquota -a
repquota: Cannot stat() mounted device /dev/root: No such file or directory
repquota: Cannot stat() mounted device /dev/root: No such file or directory
repquota: Cannot stat() mounted device /dev/root: No such file or directory

After creating symlink to a root partition:
  cd /dev
  ln sda2 root
quotas are working fine.

The problem is that udev no longer creates this symlink, but quota tools require it. My fstab doesn't contain /dev/root reference, root is mounted explicitely by partition:

/dev/sda2               /               ext4            noatime,defaults,usrquota                               0       1

but /proc/mounts contains a reference to /dev/root:
rootfs / rootfs rw 0 0
/dev/root / ext4 rw,noatime,user_xattr,acl,barrier=1,data=ordered,usrquota 0 0

I'm not sure why... Maybe some init scripts forces it, maybe because I have DEVTMPFS configured and enabled:
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y

But anyway this is a legitimate configuration.

As a workaround I modified quota init script to create required symlink, but this is ugly. Also udev ignores rule:
KERNEL=="sda2", SYMLINK+="/dev/root"

I don't know why either...

Anyway either quota or udev, or init scripts should be fixed to avoid this condition.

[Comment 1 Andrew Savchenko 2012-10-11 19:14:26 UTC]

Created attachment 326322 [details]
emerge --info

[Comment 2 SpanKY 2012-10-12 18:45:06 UTC]

*** This bug has been marked as a duplicate of bug 390519 ***

[Comment 3 William Hubbs 2012-10-14 21:16:10 UTC]

This is not a udev issue. Please see the tracker this bug blocks now for
information on how your package may be able to be fixed.

Thanks,

William

[Comment 4 Jeroen Roovers (RETIRED) 2015-01-15 10:40:55 UTC]

*** Bug 536658 has been marked as a duplicate of this bug. ***