On 14/02/17 12:51 PM, Jean-Francois Malouin wrote:
> * Jean-Louis Martineau <[email protected]> [20170214 12:39]:
>> On 14/02/17 12:18 PM, Jean-Francois Malouin wrote:
>>> Hi,
>>>
>>> I've never really understood how to make use of the amanda.conf
>>> parameter 'taper-parallel-write'.
>>>
>>> I have this tape library with 2 LTO6 tape drives and in the amanda
>>> (3.4.2) config storage section I have set taper-parallel-write=2 along
>>> with defines for the 2 drives in the tpchanger definition:
>>>
>>> define device "lto6-drive-0" {
>>> tapedev "tape:/dev/nst0"
>>> device-property "BLOCK_SIZE" "2 mbytes"
>>> }
>>> define device "lto6-drive-1" {
>>> tapedev "tape:/dev/nst1"
>>> device-property "BLOCK_SIZE" "2 mbytes"
>>> }
>>> define changer "neo-t48" {
>>> tpchanger "chg-robot:/dev/changer"
>>> changerfile "/opt/amanda/etc/amanda/neo-t48-state"
>>> property "tape-device" "0=lto6-drive-0" "1=lto6-drive-1"
>>> property "use-slots" "1-48"
>>> property "eject-before-unload" "yes"
>>> property "eject-delay" "20s"
>>> property "unload-delay" "2s"
>>> property "load-poll" "5s poll 20s until 180s"
>>> property "status-interval" "5s"
>>> }
>>> tpchanger "neo-t48"
>>> define storage "bic-storage" {
>>> ...
>>> taper-parallel-write=2
>> I suppose it is: taper-parallel-write 2 # there is = sign in amanda.conf
> My typo, it's really
>
> taper-parallel-write 2
>
> in the config file.
>
>>> tpchanger "neo-t48"
>>> }
>> You define the storage, but do you tell amanda to use it?
>> storage "bic-storage"
> I think so:
>
> define storage "bic-storage" {
> comment "First try at a storage section"
> policy "bic-policy"
> autoflush yes
> eject-volume yes
> labelstr "^NEO-T48-B[0-9][0-9]*"
> runtapes 3
> taper-parallel-write 2
> tapepool "tapepool-bic-neo-t48"
> taperalgo largestfit
> taperscan "oldest"
> tapetype "lto6-tapetype"
> tpchanger "neo-t48"
> }
> storage "bic-storage"
>
>> There is many parameters amanda use t dermine if another tape is required:
>> tapetype length
>> flush-threshold-*
>> taperflush
>> ...
> Those are defined as well but as default values in the config (not in
> the storage section per se):
>
> flush-threshold-dumped 100
> flush-threshold-scheduled 100
> taperflush 100
Amanda wait for these condition to be satisfied.
set flush-threshold-dumped to 0
>
> The tapetype "lto6-tapetype" is defined like this, using amtapetype:
>
> define tapetype lto6-tapetype {
> # LEOM is not supported for this drive and kernel
> comment "Created by amtapetype; compression disabled"
> length 2459914240 kbytes
> filemark 3227 kbytes
> speed 156842 kps
> blocksize 2048 kbytes
> part-size 200gb
> part-cache-max-size 200gb
> part-cache-type disk
> part-cache-dir "/holddisk"
> }
>
> Thanks!
> jf
>
>> Jean-Louis
