Re: Transient data-path errors when running amcheck
As directed, I tried changing from chg-zd-mtx to chg-robot. Here's
my changer definition:
define changer "gen-drive-0" {
tpchanger "chg-robot:/dev/changer"
changerfile "/local/etc/amanda/gen/changer-state"
property "tape-device" "0=tape:/dev/gentape"
property "eject-before-unload" "no"
property "use-slots" "1-7"
property "fast-search" "no"
property "ignore-barcodes" "yes"
property "eject-delay" "10"
property "unload-delay" "10"
property "load-poll" "0 s poll 5 s until 120 s"
}
now after the last amdump, current slot was set to 4. The next
time I ran amcheck, for some reason it decided to use slot 6 for
the next tape instead of #5 and amtape reports:
amtape gen current
slot 6: time 20130823170001 label gen072
so I try to switch it to 5 with amtape:
amtape gen slot 5
ERROR: Slot: 5: slot 5 is empty
But that's not the case, as mtx status shows:
Storage Changer /dev/changer:1 Drives, 7 Slots ( 0 Import/Export )
Data Transfer Element 0:Full (Storage Element 6 Loaded)
Storage Element 1:Full
Storage Element 2:Full
Storage Element 3:Full
Storage Element 4:Full
Storage Element 5:Full
Storage Element 6:Empty
Storage Element 7:Full
So I do an mtx unload:
Unloading drive 0 into Storage Element 6...done
but amtape still refuses to co-operate:
amtape gen slot 5
ERROR: Slot: 5: slot 5 is empty
So I do:
mtx load 5
Loading media from Storage Element 5 into drive 0...
Finally amtape agrees with me:
amtape gen slot 5
slot 5: time 20130819170001 label gen071
changed to slot 5
---
Reasons like this are why I went back to chg-zd-mtx. Although
it still messes up, at least it doesn't skip tapes randomly.
Steve
--
Steven J. BackusComputer Systems Manager
University of Utah E-Mail: steven.bac...@utah.edu
Genetic EpidemiologyAlternate: bac...@math.utah.edu
391 Chipeta Way -- Suite D Office: 801.587.9308
Salt Lake City, UT 84108-1266 http://www.math.utah.edu/~backus
Re: Transient data-path errors when running amcheck
Steven,
It is always better to report a bug instead of going to an older release.
Try the patch I posted on
https://forums.zmanda.com/showthread.php?5179-amtape-shows-slot-empty-but-mtx-doesn-t
Jean-Louis
On 01/03/2014 03:29 PM, Steven Backus wrote:
As directed, I tried changing from chg-zd-mtx to chg-robot. Here's
my changer definition:
define changer "gen-drive-0" {
tpchanger "chg-robot:/dev/changer"
changerfile "/local/etc/amanda/gen/changer-state"
property "tape-device" "0=tape:/dev/gentape"
property "eject-before-unload" "no"
property "use-slots" "1-7"
property "fast-search" "no"
property "ignore-barcodes" "yes"
property "eject-delay" "10"
property "unload-delay" "10"
property "load-poll" "0 s poll 5 s until 120 s"
}
now after the last amdump, current slot was set to 4. The next
time I ran amcheck, for some reason it decided to use slot 6 for
the next tape instead of #5 and amtape reports:
amtape gen current
slot 6: time 20130823170001 label gen072
so I try to switch it to 5 with amtape:
amtape gen slot 5
ERROR: Slot: 5: slot 5 is empty
But that's not the case, as mtx status shows:
Storage Changer /dev/changer:1 Drives, 7 Slots ( 0 Import/Export )
Data Transfer Element 0:Full (Storage Element 6 Loaded)
Storage Element 1:Full
Storage Element 2:Full
Storage Element 3:Full
Storage Element 4:Full
Storage Element 5:Full
Storage Element 6:Empty
Storage Element 7:Full
So I do an mtx unload:
Unloading drive 0 into Storage Element 6...done
but amtape still refuses to co-operate:
amtape gen slot 5
ERROR: Slot: 5: slot 5 is empty
So I do:
mtx load 5
Loading media from Storage Element 5 into drive 0...
Finally amtape agrees with me:
amtape gen slot 5
slot 5: time 20130819170001 label gen071
changed to slot 5
---
Reasons like this are why I went back to chg-zd-mtx. Although
it still messes up, at least it doesn't skip tapes randomly.
Steve
Re: Transient data-path errors when running amcheck
Huh! I had a couple of instances of "it's empty" / "no it isn't" and deleted
my changerfile. This fixed it, but perhaps I should also try your patch. I was
sharing the drive and the changerfile between 2 configurations (a daily and an
archive) and thought I might have caused my problems by doing that. I'll look
into the patch in a few weeks when I'm back in the office.
Deb Baddorf
> On Jan 3, 2014, at 2:47 PM, "Jean-Louis Martineau"
> wrote:
>
> Steven,
>
> It is always better to report a bug instead of going to an older release.
>
> Try the patch I posted on
> https://forums.zmanda.com/showthread.php?5179-amtape-shows-slot-empty-but-mtx-doesn-t
>
> Jean-Louis
>
>> On 01/03/2014 03:29 PM, Steven Backus wrote:
>> As directed, I tried changing from chg-zd-mtx to chg-robot. Here's
>> my changer definition:
>>
>> define changer "gen-drive-0" {
>> tpchanger "chg-robot:/dev/changer"
>> changerfile "/local/etc/amanda/gen/changer-state"
>> property "tape-device" "0=tape:/dev/gentape"
>> property "eject-before-unload" "no"
>> property "use-slots" "1-7"
>> property "fast-search" "no"
>> property "ignore-barcodes" "yes"
>> property "eject-delay" "10"
>> property "unload-delay" "10"
>> property "load-poll" "0 s poll 5 s until 120 s"
>> }
>>
>> now after the last amdump, current slot was set to 4. The next
>> time I ran amcheck, for some reason it decided to use slot 6 for
>> the next tape instead of #5 and amtape reports:
>>
>> amtape gen current
>>
>> slot 6: time 20130823170001 label gen072
>>
>> so I try to switch it to 5 with amtape:
>>
>> amtape gen slot 5
>>
>> ERROR: Slot: 5: slot 5 is empty
>>
>> But that's not the case, as mtx status shows:
>>
>> Storage Changer /dev/changer:1 Drives, 7 Slots ( 0 Import/Export )
>> Data Transfer Element 0:Full (Storage Element 6 Loaded)
>> Storage Element 1:Full
>> Storage Element 2:Full
>> Storage Element 3:Full
>> Storage Element 4:Full
>> Storage Element 5:Full
>> Storage Element 6:Empty
>> Storage Element 7:Full
>>
>> So I do an mtx unload:
>>
>> Unloading drive 0 into Storage Element 6...done
>>
>> but amtape still refuses to co-operate:
>>
>> amtape gen slot 5
>>
>> ERROR: Slot: 5: slot 5 is empty
>>
>> So I do:
>>
>> mtx load 5
>> Loading media from Storage Element 5 into drive 0...
>>
>> Finally amtape agrees with me:
>>
>> amtape gen slot 5
>> slot 5: time 20130819170001 label gen071
>> changed to slot 5
>> ---
>> Reasons like this are why I went back to chg-zd-mtx. Although
>> it still messes up, at least it doesn't skip tapes randomly.
>>
>> Steve
>
