Ashley Moran <[EMAIL PROTECTED]> writes: > I just saw this slashdotted article: > http://ezine.daemonnews.org/200603/dermouse.html > > Just to satisfy my curiosity, is it the sort of thing that can be > implemented as a GEOM layer? The idea is bloody clever but sounds > like a bit of a hack right now.
Set up ggated on the "backup server": # truncate -s16G /backup/foo.img (assuming the size of the disk you want to mirror is 16 GB) # echo "foo RW /backup/foo.img" >/etc/gg.exports where foo is the name or IP address of the client. start ggated: # ggated /etc/gg.exports start ggatec on the client: # ggatec create bar /backup/foo.img where bar is the name or IP address of the server. now you can create a mirror on the client: # gmirror load # gmirror label -b prefer baz /dev/ggate0 # gmirror insert -p 1000 baz /dev/whatever # newfs -U /dev/mirror/baz # mount -t ufs /dev/mirror/baz /mnt (baz can be any name you want to give your mirror) if /dev/whatever on the client dies, you can simply mdconfig /backup/foo.img on the server and mount it to extract data. If you take care not to modify it, you can easily restore the volume on the client: # ggatec create bar /backup/foo.img # gmirror load # gmirror forget baz # gmirror insert -p 1000 baz /dev/whatever gmirror will immediately start resynchronizing the mirror; you can follow its progress with 'gmirror status'. DES -- Dag-Erling Smørgrav - [EMAIL PROTECTED] _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
