dudekula mastan wrote:
Is it possible to create a ZPool on SVM volumes ? What are the limitations
for this ?
Not as far as I am aware. libdiskmgmt gets in the
way - it protects you.
This is incorrect. If you attempt to use the same underlying disks, then
libdiskmgmt will protect you.
But if you use the SVM block volumes, you can certainly do this:
9:00 elpaso [~] {4:0}% zpool status riogrande
pool: riogrande
state: ONLINE
status: The pool is formatted using an older on-disk format. The pool can
still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'. Once this is done, the
pool will no longer be accessible on older software versions.
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
riogrande ONLINE 0 0 0
/dev/md/gate/dsk/d50 ONLINE 0 0 0
/dev/md/gate/dsk/d51 ONLINE 0 0 0
/dev/md/gate/dsk/d52 ONLINE 0 0 0
/dev/md/gate/dsk/d53 ONLINE 0 0 0
/dev/md/gate/dsk/d54 ONLINE 0 0 0
/dev/md/gate/dsk/d55 ONLINE 0 0 0
errors: No known data errors
9:00 elpaso [~] {5:0}%
....in this example, the SVM volumes are part of a named diskset. That is
NOT required, and this will also work correctly on volumes from the local
diskset.
The interaction of ZFS and SVM creates no new, interesting limitations,
beyond those that pertain to ZFS or SVM in isolation.
As a practical measure, you should probably not be duplicating levels of
striping or redundancy in both layers.
--Mark
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