2009/9/17 Matthew Dillon <dillon@apollo.backplane.com>:
> :Hi!
> :
> :I had something very similar on 95% full hammer FS with version of FS =
=3D3D 1=3D
> :.
> :After upgrading it to v2 panics vent away.
> :
> :...
> :Also here are some interesting lines in /var/log/messages, possibly
> :indicating corrupted media:
> :
> :Sep 16 01:22:42 dfly kernel: ad4: WARNING - WRITE_DMA UDMA ICRC error
> :(retrying request) LBA=3D3D92046464
> :Sep 16 01:26:18 dfly syslogd: kernel boot file is /boot/kernel
> :Sep 16 01:26:18 dfly kernel: ad4: FAILURE - device detached
> :Sep 16 01:26:18 dfly kernel: subdisk4: detached
> :Sep 16 01:26:18 dfly kernel: HAMMER(Share_Big): Critical error
> :...
> :--=3D20
> :Dennis Melentyev
>
> =C2=A0 =C2=A0Gotta be two different things. =C2=A0Basically ad4 had a DMA=
error and
> =C2=A0 =C2=A0detached and the HAMMER filesystem, being unable to write, t=
hrew a fit.
> =C2=A0 =C2=A0That would be an issue with NATA. =C2=A0HAMMER was just savi=
ng itself.
>
> =C2=A0 =C2=A0That sort of UDMA failure is usually indicative of an IDE wi=
ring
> =C2=A0 =C2=A0issue.
>
> =C2=A0 =C2=A0We did fix a bug in HAMMER related to very rare incorrect B-=
Tree
> =C2=A0 =C2=A0deletions which would lead to lost inodes and potentially pa=
nics.
> =C2=A0 =C2=A0Anything like that should no longer occur.
>
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0-Matt
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Matthew D=
illon
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<dillon@b=
ackplane.com>
>
Wiring was the one possibility, and underpowered drive could be just
another (P4/2.4 with 3 HDD's on noname 300W PSU). Just realized that
few days ago: mbmon's 12P had showed 10.5+ Volts until PSU was
replaced with 400W one.
PS. That also saves my ears in the night, thanks to 120mm cooler :)
--=20
Dennis Melentyev