Recently I was a little bit bored that ONTAP WAFL's .snapshot feature is such easy to use since years while on my FreeBSD 5 boxes the unprivileged users were not able to as easily use snapshots for retrieving old stages of their files.
Hence I implemented a little snapshot management environment for FreeBSD around mount(8), mdconfig(8), amd(8) and cron(8) which lets me provide a similar environment than what people are used to from WAFL. To illustate the solution, let's give an example: On ONTAP WAFL filesystems users already can do: | $ cd /home/rse | $ echo "before" >foo.txt; sleep 3601 | $ echo "middle" >foo.txt; sleep 3601 | $ echo "after" >foo.txt | $ ls -la | fgrep .snapshot | $ cat .snapshot/hourly.1/foo.txt .snapshot/hourly.0/foo.txt foo.txt | before | middle | after On FreeBSD UFS2 filesystems users now also can do: | $ cd /home/rse | $ echo "before" >foo.txt; sleep 3601 | $ echo "middle" >foo.txt; sleep 3601 | $ echo "after" >foo.txt | $ ls -la /snap | grep hourly | $ cat /snap/home:hourly.1/rse/foo.txt /snap/home:hourly.0/rse/foo.txt foo.txt | before | middle | after Because it certainly is useful also for others, I've now packed the stuff together, added a little Makefile for ad-hoc "make install" and "make uninstall" and wrote both manual pages for the implemented commands plus a little summary and background article under http://people.freebsd.org/~rse/snapshot/ Now, enjoy happy snapshooting! And feel free to give me feedback, please... ;-) Yours, Ralf S. Engelschall [EMAIL PROTECTED] [EMAIL PROTECTED] _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
