On Mon, 22 Oct 2012 16:20:05 +0200 (CEST), you wrote:
>Hi,
>we have a software we made to automate zfs replica of pools into separate
>slow/high-capacity disks, for backup.
>When the pool is single, we have no problem automating the zfs send/receive
>into a new pool of the destination disk, because the destination is the entire
>disk.
>Sometimes we would like to automate the sending of more pools, including the
>rpool, to have a single
>disk replicating an entire system.
>We use to prepare the destination disk with format, creating correct slices to
>contain all the pools into
>s0,s1 ecc.
>We would like to be able to automatically look into a destination disk,
>discover Solaris format and usable slice sizes, decide if they fit the source
>data and then if to use them.
>Or, decide if to destroy partition table and change slices to fit what we need.
>Problem is, prtvtoc, format and so on prdocues quite hard output to parse and
>decide.
>Is there any other simpler tool that already output usable slices and sizes?
>And any other simpler tool to create the needed slices?
>Last but not least: am I forced to use Solaris format and slices in this case?
>Or is there any other
>partitioning scheme I could use to create more pools into a single disk?
This simplest tool is ZFS itself. There is no need to make a target pool
per source pool. Just create one backup pool on full disk(s) and create
use that as a target to receive all datasets of all source pools.
Example (this is what I do):
Source pools:
rpool, with datasets:
rpool/ROOT
rpool/ROOT/BE1
rpool/ROOT/BE1/var
rpool/dump
rpool/export
rpool/export/home
rpool/swap
datapool1
datapool1/dataset1
datapool1/dataset2
datapool2
datapool2/dataset3
datapool2/dataset4
Target pool:
zback, with datasets
zback/zsr/rpool/ROOT
zback/zsr/rpool/ROOT/BE1
zback/zsr/rpool/ROOT/BE1/var
zback/zsr/rpool/export
zback/zsr/rpool/export/home
zback/zsr/datapool1/dataset1
zback/zsr/datapool1/dataset2
zback/zsr/datapool2/dataset3
zback/zsr/datapool2/dataset4
zback/other
zback/zsr indicates all datasets below it receive their contents from
zfs Send/Receive, hence zsr.
The last dataset, zback/other is used to put random stuff in, not
related to datasets in the source pools.
>Thanx for any clarification.
>Gabriele.
--
Groet, Cordialement, Pozdrawiam, Regards,
Kees Nuyt
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