Both HOME and PERM systems have integrated snapshots that could be used to recover accidentally deleted files and data. The frequency of those snapshots and where they are stored varies depending on the filesystem and the period of time. Unfortunately there are no snapshots or backups for other filesystems such as SCRATCH or HPCPERM.
To recover data from the snapshots, first find the most recent snapshot containing the files you want to recover, and then just copy them back into place with the usual commands such as cp or rsync.
| Filesystem | Frequency | Location |
|---|---|---|
| HOME | Hourly for the last 6 hours Daily at midnight for the last 2 days Weekly on Sunday at midnight for the last 2 weeks | Hidden .snapshot directory within any directory in $HOME $ ls -1 .snapshot daily.2022-03-10_0010 daily.2022-03-11_0010 hourly.2022-03-11_0605 hourly.2022-03-11_0705 hourly.2022-03-11_0805 hourly.2022-03-11_0905 hourly.2022-03-11_1005 hourly.2022-03-11_1105 weekly.2022-02-27_0015 weekly.2022-03-06_0015 |
Daily for the last month Monthly on 1st day of the month for the last 2 years | Run $ home_snap
cd into the directory of the date you want to copy from:
/ec/home_snapshot/nas1a-svm0_snapshot/.nas1a-svm0-2022-03-09/home_a/user
/ec/home_snapshot/nas1a-svm0_snapshot/.nas1a-svm0-2022-03-10/home_a/user
/ec/home_snapshot/nas1a-svm0_snapshot/.nas1a-svm0-2022-03-11/home_a/user
| |
| PERM | daily at midnight for the last 15 days | Run $ perm_snap
cd into the directory of the date you want to copy from:
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-02-25_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-02-26_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-02-27_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-02-28_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-01_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-02_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-03_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-04_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-05_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-06_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-07_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-08_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-09_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-10_00-00/user
/ec/perm_snapshot/bodh2lnxsap-01_pool_perm_a/.zfs/snapshot/auto-2022-03-11_00-00/user
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