Date: Fri, 21 Jul 2000 10:15:15 -0500 From: "Alejandro Ramirez" <ales@megared.net.mx> To: <freebsd-questions@freebsd.org> Cc: <freebsd-scsi@freebsd.org> Subject: SCSI Bus Reset & Frozen System with ahc driver !!! Message-ID: <028401bff326$78f210e0$02c134c8@megared.net.mx>
next in thread | raw e-mail | index | archive | help
Hi all,
I have a Netfinity 3500 server with FreeBSD 3.4-RELEASE and an Adaptec
aic7895 Ultra SCSI adapter card, that has an IBM tape drive:
sa0 at ahc0 bus 0 target 6 lun 0
sa0: <ARCHIVE Python 04106-XXX 743B> Removable Sequential Access SCSI-2
device
sa0: 10.000MB/s transfers (10.000MHz, offset 15)
da0 at ahc0 bus 0 target 0 lun 0
da0: <IBM-PSG DNES-309170W !# SA30> Fixed Direct Access SCSI-3 device
da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing
Enabled
da0: 8678MB (17774160 512 byte sectors: 255H 63S/T 1106C)
da1 at ahc0 bus 0 target 1 lun 0
da1: <IBM-PSG DNES-309170W !# SAB0> Fixed Direct Access SCSI-3 device
da1: 40.000MB/s transfers (20.000MHz, offset 8, 16bit), Tagged Queueing
Enabled
da1: 8678MB (17774160 512 byte sectors: 255H 63S/T 1106C)
I have configured nightly backups in this server, suddenly the tape started
to fail, and I were told by IBM to upgrade the firmware of this tape, I did
it and its still failing, but the problem now its worst, because the system
gets frozen when the backup starts, and the only way of get it out from this
state its rebooting the server, this is the message that it gives after
getting frozen:
(sa0:ahc0:0:6:0): SCB 0x6b - timed out in command phase, SEQADDR == 0x152
(sa0:ahc0:0:6:0): BDR message in message buffer
(sa0:ahc0:0:6:0): SCB 0x6b - timed out in command phase, SEQADDR == 0x152
(sa0:ahc0:0:6:0): no longer in timeout, status = 34b
ahc0: Issued Channel A Bus Reset. 5 SCBs aborted
I know that I have to change the tape drive, and I also have eliminating the
cron job from being executed, but in the mean time I really dont think that
ist good to freebsd not to be able to recover it self from this state,
resetting the SCSI bus where the disks also lives, and got frozen by this???
could this be a bug in the ahc driver???
Thanks for your help...
Ales
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?028401bff326$78f210e0$02c134c8>