detached disk & fsck lock

[bymer]

Hi all,

I have several computers of different configurations (other
motherboards, controllers). Each have 14-20 hdd devices (ATA & SATA).
All hdd is WDC WDxxxxJD or WDC WDxxxxJB. Computers periodically
crashed with "disk detached" (random disk id) error:

subdisk10: detached
ad10: detached
g_vfs_done():ad10s1h[READ(offset=289109770240, length=65536)]error = 6
g_vfs_done():ad10s1h[READ(offset=289297481728, length=131072)]error = 6
g_vfs_done():ad10s1h[READ(offset=296795766784, length=131072)]error = 6
 -- skipped --
panic: vinvalbuf: dirty bufs
Uptime: 13h32m44s
Cannot dump. No dump device defined.
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...

After reboot, it's quite likely (20-30 percents) that fsck (running in
background mode) lock in ufs state and can't be killed even by SIGKILL.
After it all others processes working with that device lock in ufs state
too.

It's appear on all FreeBSD 6 versions, from 6.0 RELEASE to 6.1-STABLE.

-- 
Best regards,
 bymer                          mailto:bymer at infostore.org