Hi!
On 01/14/06 15:20, Julien Cigar wrote:
I had exactly the same problem some months ago, full thread can be found
here: http://www.nabble.com/Still-problems-with-my-Sony-tapes-t504270.html
Thanks for the hint. But I don't think that this is the same problem.
Your errors were DDS related, I'm using a DLT drive. Besides, the
scsi-errors are pretty different and your problems seem to have been
scsi-id related. I don't suspect this to be the problem in my case, as
the server was shipped with this configuration and the tape drive has
been working without any problem now for nearly a year.
I believe my problem might have been caused by a drive firmware problem
or something like that. After that error, the tape was totally
unresponsive, when I tried to query it using mt status or tapeinfo, the
following errors showed up in the syslog:
scsi: reservation conflict: host 0 channel 1 id 6 lun 0
st0: Error 70018 (sugg. bt 0x0, driver bt 0x0, host bt 0x7).
After a cold restart, the drive works again now.
However the other issue is that apparently bacula has been informed
about the error, but it seems to have interpreted it as an end of medium
condition instead of aborting the backup:
-------------------- snipp! --------------------
14-Jan 01:57 samba-sd: Samba-Homes.2006-01-14_01.05.00 Error:
block.c:538 Write error at 6:3819 on device "DLT1" (/dev/nst0).
ERR=Input/output error.
14-Jan 01:57 samba-sd: Samba-Homes.2006-01-14_01.05.00 Error: Error
writing final EOF to tape. This Volume may not be readable.
dev.c:1553 ioctl MTWEOF error on "DLT1" (/dev/nst0). ERR=Input/output error.
14-Jan 01:57 samba-sd: End of medium on Volume "Weekly-2005-06-12_8"
Bytes=6,245,922,599 Blocks=96,818 at 14-Jan-2006 01:57.
-------------------- snipp! --------------------
Is there an option to let bacula abort a backup after a write error?
Cheers,
--leo
P.S.: I'd also still be interested in other users experiences with the
durability of DLT tapes and some recommendations on drive cleaning and
maintainance.
Alexander Bergolth wrote:
Hi!
Tonight, I got the following I/O error for the first time:
The Drive is a DLT1 tape:
Vendor: BNCHMARK Model: DLT1 Rev: 5538
Type: Sequential-Access ANSI SCSI revision: 02
-------------------- snipp! --------------------
14-Jan 01:55 samba-sd: Writing spooled data to Volume. Despooling
536,904,185 bytes ...
14-Jan 01:57 samba-sd: Samba-Homes.2006-01-14_01.05.00 Error:
block.c:538 Write error at 6:3819 on device "DLT1" (/dev/nst0).
ERR=Input/output error.
14-Jan 01:57 samba-sd: Samba-Homes.2006-01-14_01.05.00 Error: Error
writing final EOF to tape. This Volume may not be readable.
dev.c:1553 ioctl MTWEOF error on "DLT1" (/dev/nst0). ERR=Input/output
error.
14-Jan 01:57 samba-sd: End of medium on Volume "Weekly-2005-06-12_8"
Bytes=6,245,922,599 Blocks=96,818 at 14-Jan-2006 01:57.
14-Jan 01:57 samba-dir: Recycled volume "Weekly-2005-04-22_2"
14-Jan 01:57 samba-sd: Please mount Volume "Weekly-2005-04-22_2" on
Storage Device "DLT1" (/dev/nst0) for Job Samba-Homes.2006-01-14_01.05.00
-------------------- snipp! --------------------
This is the dmesg output:
-------------------- snipp! --------------------
st0: Error with sense data: <6>st0: Current: sense key: Not Ready
Additional sense: Logical unit not ready, initializing cmd. required
st0: Error 400f4 (sugg. bt 0x0, driver bt 0x0, host bt 0x4).
st0: Error 400f4 (sugg. bt 0x0, driver bt 0x0, host bt 0x4).
[...]
-------------------- snipp! --------------------
As I don't have very much experience with DLT tapes:
Does this indicate a worn out tape or should I simply clean the drive
with the cleaning tape?
How many backups should be possible with a DLT tape / at which
intervals should a tape be changed?
At which intervals should the drive be cleaned?
In this case, the current job is still running and waiting for another
tape. Is there an option to let bacula abort the job, if such an error
occurs?
Cheers,
--leo
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