On Tuesday 17 January 2006 00:10, Alexander Bergolth wrote:
> 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?
No, and I'm not sure that aborting the job would be very useful. The last
record on the tape was correctly written so the tape *should* be valid.
Bacula does warn you, which allows you to verify the job and re-run it if
necessary.
>
> 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
--
Best regards,
Kern
(">
/\
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