[Halld-offline] new work disk has snapshots

[Mark Ito]

Folks,

One feature of our new /work/halld, that we have not had in the past, is 
a snapshot system. It is different than the NetApp system that we have 
at JLab on /home and /group. To get to the snapshots on the work disk, 
you need to

cd /work/halld/.zfs/snapshot

Right now you will see:

$ ls -l

total 576

drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_daily-2021-08-27-0400
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_daily-2021-08-28-0400
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_daily-2021-08-29-0400
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_daily-2021-08-30-0400
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_daily-2021-08-31-0400
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_daily-2021-09-01-0400
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_daily-2021-09-02-0400
drwxrwxrwx  1 root   root   0 Sep  2 17:57 zfs-auto-snap_frequent-2021-09-02-2100
drwxrwxrwx  1 root   root   0 Sep  2 17:57 zfs-auto-snap_frequent-2021-09-02-2115
drwxrwxrwx  1 root   root   0 Sep  2 17:57 zfs-auto-snap_frequent-2021-09-02-2130
drwxrwxrwx  1 root   root   0 Sep  2 17:57 zfs-auto-snap_frequent-2021-09-02-2145
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_hourly-2021-09-01-2200
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_hourly-2021-09-01-2300
drwxrwsr-x 78 davidl halld 84 Aug 24 13:31 zfs-auto-snap_hourly-2021-09-02-0000
...
drwxrwxrwx  1 root   root   0 Sep  2 17:57 zfs-auto-snap_hourly-2021-09-02-1900
drwxrwxrwx  1 root   root   0 Sep  2 17:57 zfs-auto-snap_hourly-2021-09-02-2000
drwxrwxrwx  1 root   root   0 Sep  2 17:57 zfs-auto-snap_hourly-2021-09-02-2100

and from there you can cd into the snapshot of your choice.

   -- Mark

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