dmesg messages

[Michael Dalanek]

Im getting the following errors in dmesg, what is the problem ?


SCSI: bp: 0000000101351800
dev: 1f012100
cdb: 28 00 00 f8 88 10 00 00 04 00
residual: 800
status: (02) Check Condition
sense data: 70 00 06 00 00 00 00 0a 00 00 00 00 29 00 00 00
00 00
sense key: (06) Unit Attention
additional sense code: (29)
additional sense code qualifier: (00)

SCSI: bp: 0000000101351800
dev: 1f012100
cdb: 28 00 00 f8 88 10 00 00 04 00
retry_cnt: 1
data in: a5 01 fc f5 00 00 00 03 37 83 b5 5a 00 05 1e c5
residual: 0
status: (00) Good

[Ken Scharpell · Accepted solution]

I dont think theyre anything to worry about. Looks like your disks simply got very busy/slightly overloaded during some heavy IO like say a backup running ? You can check the times of the errors by doing;
grep SCSI /var/adm/syslog/syslog.log

Now match these times with maybe a backup running or some large job/report ?

[Michael Dalanek]

Thanks for the quick reply, yes the backup was running at this time and searching thry syslog it happens every week!

[Chris Moore]

SCSI: bp: 0000000101351800
dev: 1f012100
Device is major 0x1f, minor 0x012100
sdisk at c1t2d1
cdb: 28 00 00 f8 88 10 00 00 04 00
Command was a read of from block 00f88810
of 0004 blocks
residual: 800
status: (02) Check Condition
sense data: 70 00 06 00 00 00 00 0a 00 00 00 00 29 00 00 00
00 00
sense key: (06) Unit Attention
additional sense code: (29)
additional sense code qualifier: (00)
Error returned was UA 29
The device has been powered on or reset
or the bus has been reset since the last
access


SCSI: bp: 0000000101351800
dev: 1f012100
cdb: 28 00 00 f8 88 10 00 00 04 00
retry_cnt: 1
data in: a5 01 fc f5 00 00 00 03 37 83 b5 5a 00 05 1e c5
residual: 0
status: (00) Good
Same buffer, same device, same command
being retried returned Status Good.

So, a disk read was directed to a device and
the disk replied with an error indicating it
had been powered on or reset since the last
I/O operation. The system then retried the
I/O and it completed successfully.

While this isn't causing any data loss, you might want to look into why the device is
getting reset. If it's really just being
powered on you have nothing to worry about.
If the device or the bus is getting reset
it may indicate some other problem.

[Geert Stappers]

We had similar messages.
It was a hotswappable disk
badly fitted/fixed in the connector.
Had to replace the SCSI backplane.