Recently I had a question from one of my friend on how to restore a snapshot which was created.
Here Iam explaning with the lun clone command.where i clone a lun with the required snapshot. Here in our example. /vol/vol1/q_vol1_004/q_vol1_004.lun is the LUN where they wanted me to restore the lun for with the hourly.4 snapshot
Filer1*> snap list vol1
Volume vol1
working...
%/used %/total date name
---------- ---------- ------------ --------
1% ( 1%) 0% ( 0%) Jul 08 04:30 filer1_vol1.274 (snapmirror)
1% ( 0%) 0% ( 0%) Jul 07 23:02 hourly.0
3% ( 2%) 1% ( 1%) Jul 06 23:02 hourly.1
5% ( 1%) 1% ( 0%) Jul 05 23:02 hourly.2
7% ( 3%) 2% ( 1%) Jul 04 23:02 hourly.3
9% ( 2%) 2% ( 0%) Jul 03 23:02 hourly.4
in the above command i see the list of snapshots that are available for restore
Filer1*> qtree status vol1
Volume Tree Style Oplocks Status
-------- -------- ----- -------- ---------
vol1 unix enabled normal
vol1 q_vol1_001 unix enabled normal
vol1 q_vol1_002 unix enabled normal
vol1 q_vol1_003 unix enabled normal
vol1 q_vol1_004 unix enabled normal
In the above command we see the list of qtrees created for that volume
filer1*> qtree create /vol/vol1/q_vol1_005 ( Iam creating a new qtree on the same volume so I can do a lun clone with this qtree wrt to a particualar snapshot.
filer1*> lun clone create /vol/vol1/q_vol1_005/q_vol1_005.lun -o noreserve -b /vol/vol1/q_vol1_004/q_vol1_004.lun hourly.4 ( Here iam creating a new lun using hourly.4 snapshot )
filer1*> lun show unmapped
/vol/vol1/q_vol1_005/q_vol1_005.lun 500.1g (536952700920) (r/w, online)
filer1*> lun map /vol/vol1/q_vol1_005/q_vol1_005.lun host1 22 ( here iam mapping to the host with lun ID 22)
where 22 is the LUN ID
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