On Thu, 6 Sep 2007 17:31:53 +0300
"Marti Raudsepp" <marti@juffo.org> wrote:
quoted text > Hi,
>
> My dmesg output contains a lot of warning messages from reiserfs and
> I'm wondering if this is anything important:
> ReiserFS: dm-0: warning: clm-2100: nesting info a different FS
>
> I'm running Hardened Gentoo kernel 2.6.16-r11 on AMD64. I've got three
> reiserfs filesystems: one for root which is mounted directly from a
> RAID1 array (/dev/md/2), and two are LVM volumes from another RAID1
> array (/dev/md/3); one of the latter has usrquota enabled. I'm not
> really sure which block device "dm-0" refers to. The computer is doing
> relatively little disk I/O most of the time.
>
> The comment in fs/reiserfs/journal.c says:
> /* we've ended up with a handle from a different filesystem.
> ** save it and restore on journal_end. This should never
> ** really happen...
> */
>
> The "should never really happen" part made me wonder, is this anything
> I should be worried about?
Well, it's really not supposed to happen, and hopefully it indicates
that someone is doing an allocation without GFP_NOFS when they really
should be using it. A simple stack trace will show us pretty quickly.
Can you try a patch to add a stack trace to this warning? I've
attached it.
-chris
