2009/9/17 Matthew Dillon <[email protected]>: > :Hi! > : > :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 > :... > :--=20 > :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 > issue. > > 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. > > -Matt > Matthew Dillon > <[email protected]> >
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 :) -- Dennis Melentyev
