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- #!/bin/bash
- # Modifica i valori di queste 3 variabili
- zpool="zpool" # nome del pool ZFS
- dataset="dataset" # dataset di cui fare lo snapshot
- dummy="dummy" # file il cui contenuto cambia ad ogni sync
- if [ -e /tmp/$dummy.md5 ]
- then
- newmd5=`md5 -q /mnt/$zpool/$dataset/$dummy`
- oldmd5=`cat /tmp/$dummy.md5`
- if [ $newmd5 != $oldmd5 ]
- then
- zfs snapshot $zpool/$dataset@`date +\%Y.\%m.\%d_\%H.\%M` echo "Snapshot del dataset $dataset:"
- ls -la /mnt/$zpool/$dataset/.zfs/snapshot | tail -n +4
- md5 -q /mnt/$zpool/$dataset/$dummy > /tmp/$dummy.md5
- fi
- else
- md5 -q /mnt/$zpool/$dataset/$dummy > /tmp/$dummy.md5
- fi
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