Messages in this thread | | | Date | Mon, 20 Sep 2004 15:32:59 +0200 | From | Helge Hafting <> | Subject | Re: OOM & [OT] util-linux-2.12e |
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Olaf Hering wrote:
> On Mon, Sep 20, Helge Hafting wrote: > > > >>Using a mtab that is a link to /proc/mounts fails with quota too. >>Quta tools read /etc/mtab looking for "usrquota" and or "grpquota" >>mount options. These appear in a normal /etc/mtab but not in /proc/mounts, >> >> > >I have never played with quota. But: does the kernel or a userland tool >if quota is active for a mount point? smells like a kernel bug. > > The kernel must know that quota is in use, or it'd be unable to refuse the syscalls when someone tries to go over his quota.
From "man mount": grpquota / noquota / quota / usrquota These options are accepted but ignored. (However, quota utili‐ ties may react to such strings in /etc/fstab.)
quota utilities indeed react to such strings in /etc/mtab too.
Qutas aren't actually enabled when the mount options are used, they are enabled when the "quotaon" tool runs. I guess it uses some special syscall or ioctl to really turn quota on.
Doing it at mount time instead, byt actually using those options, seems saner to me. But I guess they had their reasons. . .
Helge Hafting
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