Hi Clive King has a nice blog entry showing this in action http://blogs.sun.com/clive/entry/replication_using_zfs
with associated script at: http://blogs.sun.com/clive/resource/zfs_repl.ksh Which I think answers most of your questions. Enda Ross wrote: > Hey folks, > > Is anybody able to help a Solaris scripting newbie with this? I want to put > together an automatic script to take snapshots on one system and send them > across to another. I've shown the manual process works, but only have a very > basic idea about how I'm going to automate this. > > My current thinking is that I want to put together a cron job that will work > along these lines: > > - Run every 15 mins > - take a new snapshot of the pool > - send the snapshot to the remote system with zfs send / receive and ssh. > (am I right in thinking I can get ssh to work with no password if I create a > public/private key pair? http://www.go2linux.org/ssh-login-using-no-password) > - send an e-mail alert if zfs send / receive fails for any reason (with the > text of the failure message) > - send an e-mail alert if zfs send / receive takes longer than 15 minutes and > clashes with the next attempt > - delete the oldest snapshot on both systems if the send / receive worked > > Can anybody think of any potential problems I may have missed? > > Bearing in mind I've next to no experience in bash scripting, how does the > following look? > > ********************************************************************** > #!/bin/bash > > # Prepare variables for e-mail alerts > SUBJECT="zfs send / receive error" > EMAIL="[EMAIL PROTECTED]" > > NEWSNAP="build filesystem + snapshot name here" > RESULTS=$(/usr/sbin/zfs snapshot $NEWSNAP) > # how do I check for a snapshot failure here? Just look for non blank > $RESULTS? > if $RESULTS; then > # send e-mail > /bin/mail -s $SUBJECT $EMAIL $RESULTS > exit > fi > > PREVIOUSSNAP="build filesystem + snapshot name here" > RESULTS=$(/usr/sbin/zfs send -i $NEWSNAP $PREVIOUSSNAP | ssh -l *user* > *remote-system* /usr/sbin/zfs receive *filesystem*) > # again, how do I check for error messages here? Do I just look for a blank > $RESULTS to indicate success? > if $RESULTS ok; then > OBSOLETESNAP="build filesystem + name here" > zfs destroy $OBSOLETESNAP > ssh -l *user* *remote-system* /usr/sbin/zfs destroy $OBSOLETESNAP > else > # send e-mail with error message > /bin/mail -s $SUBJECT $EMAIL $RESULTS > fi > ********************************************************************** > > One concern I have is what happens if the send / receive takes longer than 15 > minutes. Do I need to check that manually, or will the script cope with this > already? Can anybody confirm that it will behave as I am hoping in that the > script will take the next snapshot, but the send / receive will fail and > generate an e-mail alert? > > thanks, > > Ross > -- > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
