kern/135690: [panic] [ata] ufs_dirbad: /backuphd: bad dir ino 22259126 at offset 0: mangled entry

[vwe at FreeBSD.org]

Old Synopsis: 7.1 p4 panic: panic: ufs_dirbad: /backuphd: bad dir ino 22259126 at offset 0: mangled entry
New Synopsis: [panic] [ata] ufs_dirbad: /backuphd: bad dir ino 22259126 at offset 0: mangled entry

State-Changed-From-To: open->feedback
State-Changed-By: vwe
State-Changed-When: Thu Jun 18 12:27:06 UTC 2009
State-Changed-Why: 
Derek,
nothing complicated here. It seems like your drive ad2 is bad. Can you please check
your drive using S.M.A.R.T. (sysutils/smartmontools) for a fault? Either that,
a broken ata controller or an ata driver bug might have caused your panic.
You may want to play with DMA timeouts but often it doesn't help. One possible
workaround is to disable ATA-DMA completely but it will reduce performance
_a lot_.
I tend to close this PR but am waiting for you to check your drive...

http://www.freebsd.org/cgi/query-pr.cgi?pr=135690