> On Dec 10, 2019, at 8:27 AM, Stefan G. Weichinger <s...@amanda.org> wrote:
>
> Am 05.12.19 um 21:47 schrieb Stefan G. Weichinger:
>> Am 03.12.19 um 15:43 schrieb Stefan G. Weichinger:
>>>
>>> Another naive question:
>>>
>>> Does the holdingdisk have to be bigger than the size of one tape?
>>
>> As there were multiple replies to my original posting and as I am way
>> too busy right now: a quick "thanks" to all the people who replied.
>>
>> So far the setup works. Maybe not optimal, but it works.
>>
>> ;-)
>>
>> stay tuned ...
>
> Now an additional obstacle:
>
> one DLE (a Veeam Backup Dir, so I don't want to split it via "exclude"
> or so) is larger than (a) one tape and (b) the holding disk.
>
> DLE = 2.9 TB
> holding disk = 2 TB
> one tape = 2.4 TB (LTO6)
>
> It seems that the tape device doesn't support LEOM ...
>
> Amdump dumps the DLE directly to tape, fills it and fails with
>
> " lev 0 partial taper: No space left on device, splitting not enabled
> "
>
> I am unsure how to set LEOM within:
>
> define device lto6_drive {
> tapedev "tape:/dev/nst0"
> #device-property "BLOCK_SIZE" "2048K"
> device-property "LEOM" "false"
> }
>
> define changer robot {
> tpchanger "chg-robot:/dev/sg4"
> #property "tape-device" "0=tape:/dev/nst0"
> property "tape-device" "0=lto6_drive"
> property "eject-before-unload" "yes"
> property "use-slots" "1-8"
> }
>
>
> ... makes amcheck happy.
>
> additional for your checking eyes:
>
> define tapetype LTO6 {
> comment "Created by amtapetype; compression enabled"
> length 2443520000 kbytes
> filemark 868 kbytes
> speed 157758 kps
> blocksize 2048 kbytes
>
> part_size 100G
> part_cache_type memory
> part_cache_max_size 8G # use roughly the amount of free RAM on your
> system
> }
>
>
> We have 32 GB RAM in there so this should work?
Except that clearly (as you say) it ISN’T working. I was going to talk about
“splitsize”
and “allow-split” but the comment in the config file say this all defaults to
YES (allow)
and not-used (splitsize). But either you or amanda needs to split this DLE,
since it doesn’t
fit onto a tape. Sounds like amanda will split it by default. Sooooo…..
I don’t have LT06 (LT05 here) BUT if it isn’t working as is,
I would set the tape length to 23…… (all the rest) and see if that makes it
work.
If yes, then gradually increase that param until it stops working.
However, I do seem to recall that amanda will keep trying to go further and
further on the tape
until it actually reaches the end, and fails. If so, changing the tape length
won’t help,
if amanda is going to keep testing the ice for itself. If there is only ONE
DLE on the tape, then failing
and trying again is senseless. I wonder if there is some new “force split”
parameter(s) that
might help? Or, look up “chunking” ?
Maybe this will stir up ideas in somebody else?
Deb Baddorf
Fermilab
