6.2-st panic w/ ggate [Was: Re: kernel panic on 6.2-RC2 with GENERIC.]

[Harald Schmalzbauer]

Am Sun, 07 Jan 2007 19:58:23 -0800
schrieb Scott Long <scottl at samsco.org>:

[...]
> >> machine is opteron hardware, but running a regular i386/SMP
> >> kernel/world. With everything at 6.2RC2 (as of 29th of December)
> >> except the areca driver the machine is rock solid, with the 29th
> >> of december version of the areca driver the box will crash on
> >> extract of a large tar file, removal
> >> of a large directory structure, or pretty much anything that 
> >> does a lot
> >> of disk io to different files/locations. There is no error 
> >> log prior to
> >> seeing the following messages..
> >>
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=433078272, length=8192)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=433111040, length=16384)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=433209344, length=16384)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=433242112, length=32768)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=437612544, length=4096)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=437616640, length=12288)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=437633024, length=6144)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=437639168, length=2048)]error = 5
> >> Dec 29 14:26:44 aleph kernel: 
> >> g_vfs_done():da0s1g[WRITE(offset=437641216, length=6144)]error = 5
> >>
> >> There are a string of these, followed by a crash and reboot. 
> >> The file system
[...]
> > Areca 1.20.00.13 (as currently in the tree) does not seem to have
> > data corruption problems, but I can trigger g_vfs_done failures
> > under heavy I/O.
> > 
> > I have raised this with Areca support, and I'm waiting to hear back
> > from Erich Chen.
> > 
> > Regards,
> > 
> > Jan Mikkelsen
> > 
> 
> I discussed this issue in length with the release engineering team 
> today, and we're going to go ahead with keeping the .013 version in
> 6.2 since it has been working very reliably for a number of other
> testers, and reverting it at this late stage of the release represents

Mybe it's unrelated to the areca driver, I can reproduce a similar
panic with ggate:

gune:/etc#46: ggatec create -u 1 -t 30 192.168.0.2 /dev/ad2p6
gune:/etc#47: mount /dev/gg
ggate1%  ggctl%   
gune:/etc#47: mount /dev/ggate1 /mnt
gune:/etc#48: cd /mnt/
gune:/mnt#49: l
.snap
gune:/mnt#50: dd if=/dev/null of=testfile bs=4k 
0+0 records in
0+0 records out
0 bytes transferred in 0.000090 secs (0 bytes/sec)
gune:/mnt#51: dd if=/dev/zero of=testfile bs=4k
g_vfs_done():ggate1[WRITE(offset=6815744, length=131072)]error = 5
g_vfs_done():ggate1[WRITE(offset=6946816, length=131072)]error = 5
g_vfs_done():ggate1[WRITE(offset=7077888, length=131072)]error = 5
g_vfs_done():ggate1[WRITE(offset=7208960, length=131072)]error = 5
g_vfs_done():ggate1[WRITE(offset=7340032, length=131072)]error = 5
g_vfs_done():ggate1[WRITE(offset=98304, length=16384)]error = 5
panic: softdep_move_dependencies: need merge code
Uptime: 6h59m0s
Cannot dump. No dump device defined.
Automatic reboot in 15 seconds - press a key on the console to abort

Unfortunately I have only this production machine...

Thanks,

-Harry