On Mon, Apr 10, 2006 at 10:31:55PM -0300, Pablo Gonzalez Mateos wrote:
> Hi, I'd like to post my experience trying to have a vserver with LVM +
> ReiserFS (v3) + standard user quotas.
>
> I succefully installed a 2.6.16 kernel + vserver 2.0.2-rc15 + util-vserver
> 0.30.210. Everything from scratch, over a new brand Sarge. The first thing I
> tried was using ext2 for the filesystem pf the logical volume... Everithing
> worked fine, even the repquota. Next step was to try with reiserfs...and
> ooops !!! Segmentation Fault.
>
> The first SG happened when I did a "vserver vsname stop" and not stopping
> the quota before the shutdown. So I realized there was a problem with the
> quota service over reiserfs...
> The second SG happened doing a "repquota" inside the guest with reiserfs.
>
> Well, I don't know if actually this had had to work, but in my case it
> didn't...
> After the seg fault the only way I've found to have the realserver working
> again was to reboot...ouch !.
what you experienced is a kernel stack trace. you should
copy/save the output (you can get it with dmesg) to some
file and save it for inspection
further it seems as if this is a reiserfs issue, so I'd
ask you to try similar commands (as the guest issues) on
the host system to recreate the same stack trace, then
try again with an unpatched (vanilla) kernel
if the vanilla kernel works fine, but the vserver patched
does not (on the host) then we have something to investigate
TIA,
Herbert
> I'm going to try with XFS, JFS and ext3...
>
> Here you have a seg fault example:
> ---------------------------------------------------
>
> rs01:~# vserver vs101 stop
> Stopping periodic command scheduler: cron.
> Stopping HTTP server: boa.
> Stopping MTA: exim4.
> Stopping internet superserver: inetd.
> Stopping OpenBSD Secure Shell server: sshd.
> Saving the System Clock time to the Hardware Clock...
> hwclock is unable to get I/O port access: the iopl(3) call failed.
> Hardware Clock updated to Tue Apr 11 01:28:39 UTC 2006.
> Stopping quota service: rpc.rquotad.
> Turning off quotas
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: ------------[ cut here ]------------
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: kernel BUG at fs/reiserfs/journal.c:3405!
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: invalid opcode: 0000 [#1]
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: CPU: 0
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: EIP is at journal_end_sync+0x27/0x67 [reiserfs]
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: eax: d8160000 ebx: d5dde6e0 ecx: 00000000 edx:
> d5dde4e0
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: esi: d32f7e98 edi: 00000008 ebp: d5dde5f0 esp:
> d32f7e80
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: ds: 007b es: 007b ss: 0068
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: Process quotaoff (pid: 2751[#49152], threadinfo=d32f6000
> task=d3231030)
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: Stack: <0>d5dde6e0 d32f7e98 d81abf9d d32f7e98 d5dde6e0
> 00000001 d5dde6e0 00000002
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: 00000001 00000037 00000623 00000000 00000000
> d47423bc d47423bc d5dde614
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: 00000004 d5dde5f0 00000002 d5dde638 c0171c49
> d5dde6e0 00000001 00000008
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: Call Trace:
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [pg0+401096605/1070425088] reiserfs_sync_fs+0x2c/0x46
> [reiserfs]
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [vfs_quota_off+297/503] vfs_quota_off+0x129/0x1f7
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [do_quotactl+263/800] do_quotactl+0x107/0x320
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [dput+27/270] dput+0x1b/0x10e
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [mntput_no_expire+20/98] mntput_no_expire+0x14/0x62
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [lookup_bdev+109/124] lookup_bdev+0x6d/0x7c
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [capable+22/48] capable+0x16/0x30
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [generic_quotactl_valid+298/349]
> generic_quotactl_valid+0x12a/0x15d
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [check_quotactl_valid+73/81]
> check_quotactl_valid+0x49/0x51
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [sys_quotactl+238/262] sys_quotactl+0xee/0x106
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: [syscall_call+7/11] syscall_call+0x7/0xb
>
> Message from syslogd@localhost at Mon Apr 10 22:28:39 2006 ...
> localhost kernel: Code: 5f 89 c8 c3 56 53 8b 5c 24 10 8b 74 24 0c 83 7e 10
> 00 8b 93 e4 00 00 00 8b 42 0c 75 08 0f 0b 4a 0d 76 f1 1b d8 83 7e 04 01 7e
> 08 <0f> 0b 4d 0d 76 f1 1b d8 83 78 28 00 75 1f 6a 01 ff 32 53 e8 d6
> /etc/rc6.d/K85quota: line 113: 2751 Segmentation fault $off $ALLFLAGS
> .
> Stopping deferred execution scheduler: atd.
> Stopping kernel log daemon: klogd.
> Stopping system log daemon: syslogd.
> Sending all processes the TERM signal...done.
> usr/local/sbin/vserver: line 85: 2727 Killed
> "${NICE_CMD[@]}" ${USE_VNAMESPACE:+$_VNAMESPACE --enter "$S_CONTEXT" -- }
> $_VCONTEXT $SILENT_OPT --migrate --chroot --xid "$S_CONTEXT" --
> "${INITCMD_STOP[@]}"
> A timeout occured while waiting for the vserver to finish and it will
> be killed by sending a SIGKILL signal. The following process list
> might be useful for finding out the reason of this behavior:
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Received on Tue Apr 11 03:03:48 2006