I have occasional problems with Sony AIT drives on 2940UW controllers. I
believe it's the tape drive that gets confused, because when it happens,
("it" being the drive stops communicating), even a reboot of the server
doesn't fix the problem when the drive is left powered on. Power cycling
the drive does fix the problem. I've tried different SCSI cables,
terminators, etc. I believe the culprit to be Sony's firmware. It may be
possible to work around this by tweaking aic7xxx module parameters. I
haven't gotten around to trying any yet, but have considered trying
aic7xxx=periodic_otag and/or increasing the tag queue depth for that LUN.
Anyway, in my case, I don't see how it could be a bacula problem. Seems
to be SCSI related.
Josh Fisher
Julien Cigar wrote:
Thanks for replying
The tape is:
phoenix:/var/backups# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: SONY Model: SDX-500C Rev: 010f
Type: Sequential-Access ANSI SCSI revision: 02
and the controller is:
phoenix:/var/backups# cat /proc/scsi/aic7xxx/0
Adaptec AIC7xxx driver version: 6.2.36
Adaptec 2940 Ultra SCSI adapter
aic7880: Ultra Wide Channel A, SCSI Id=0, 16/253 SCBs
Allocated SCBs: 5, SG List Length: 102
I runned the btape test and it was successfull
What is strange is that I get this message for about one backup on ten
and not with the same tape ... (I thought first that it was a defect
tape ... but no)
thanks,
Julien
Phil Stracchino wrote:
Julien Cigar wrote:
Hello,
sometimes I have "write error" messages during my full backup (on
tapes) :
12-Oct 18:44 phoenix-sd: BebifFullBackup.2005-10-12_06.00.00 Error:
block.c:552 Write error at 15:111 on device /dev/st0. ERR=Input/output
error.
12-Oct 18:44 phoenix-sd: BebifFullBackup.2005-10-12_06.00.00 Error:
Error writing final EOF to tape. This tape may not be readable.
dev.c:1213 ioctl MTWEOF error on /dev/st0. ERR=Input/output error.
any idea what could be the reason to this ? I'm quite sure the problem
is not the tapes ...
You don't mention what type of tape device. Did you run btape test?
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