[issue1504] hammer crash on cleanups
dennis.melentyev at gmail.com
Wed Sep 23 15:35:52 PDT 2009
2009/9/17 Matthew Dillon <dillon at apollo.backplane.com>:
> :I had something very similar on 95% full hammer FS with version of FS =3D 1=
> :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=3D92046464
> :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
> :Dennis Melentyev
> Gotta be two different things. Basically ad4 had a DMA error and
> detached and the HAMMER filesystem, being unable to write, threw a fit.
> That would be an issue with NATA. HAMMER was just saving itself.
> That sort of UDMA failure is usually indicative of an IDE wiring
> We did fix a bug in HAMMER related to very rare incorrect B-Tree
> deletions which would lead to lost inodes and potentially panics.
> Anything like that should no longer occur.
> Matthew Dillon
> <dillon at backplane.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 :)
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