I decided to try out the zfs rollback feature today. I halted my tomcat zone,
and took a zfs snapshot of it like this:
myad...@baptist.ds:~# zoneadm -z tomcat halt
myad...@baptist.ds:~# zoneadm list -cv
ID NAME STATUS PATH BRAND IP
0 global running / ipkg shared
1 routerb2 running /zones/routerb2 ipkg excl
4 webphp4 running /zones/webphp4 ipkg excl
6 mysql running /zones/mysql ipkg excl
12 dovecot2 running /zones/dovecot2 ipkg excl
13 mail running /zones/mail ipkg excl
14 stamps running /zones/stamps ipkg excl
- zone1 installed /zones/zone1 ipkg excl
- tomcat installed /zones/tomcat ipkg excl
- dovecot installed /zones/dovecot ipkg excl
- zone2 installed /zones/zone2 ipkg excl
myad...@baptist.ds:~# zfs snapshot rpool/zones/tomcat@2013-0308-1553
myad...@baptist.ds:~# zoneadm -z tomcat boot
Then I logged into the zone with "zlogin -C tomcat". I did some work which
created a bunch of files in /usr and /var. I didn't like how it worked out, so
I logged out of the zone, exited the console, and then halted the zone.
I did a zfs rollback to the snapshot I had just taken previously.
myad...@baptist.ds:~# zoneadm -z tomcat halt
myad...@baptist.ds:~# zfs rollback rpool/zones/tomcat@2013-0308-1553
cannot rollback to 'rpool/zones/tomcat@2013-0308-1553': more recent snapshots
exist
use '-r' to force deletion of the following snapshots:
rpool/zones/tomcat@zfs-auto-snap_frequent-2013-03-08-16h01
myad...@baptist.ds:~# zfs rollback -r rpool/zones/tomcat@2013-0308-1553
myad...@baptist.ds:~# zoneadm -z tomcat boot
myad...@baptist.ds:~#
I booted the zone, and logged back into it. All of those files I had created,
that I didn't like, were still there.
The zfs-auto-snap_frequent that I thought was supposed to be deleted still
remains, too.
myad...@baptist.ds:~# zfs list -t snapshot | grep tomcat
rpool/zones/tomcat@zfs-auto-snap_hourly-2013-02-20-21h45
19K - 32K -
rpool/zones/tomcat@zfs-auto-snap_weekly-2013-02-27-13h45
18K - 33K -
rpool/zones/tomcat@zfs-auto-snap_weekly-2013-03-06-13h45
18K - 33K -
rpool/zones/tomcat@zfs-auto-snap_daily-2013-03-08-13h46
0 - 33K -
rpool/zones/tomcat@zfs-auto-snap_hourly-2013-03-08-15h46
0 - 33K -
rpool/zones/tomcat@2013-0308-1553
0 - 33K -
rpool/zones/tomcat@zfs-auto-snap_frequent-2013-03-08-16h31
0 - 33K -
rpool/zones/tomcat/ROOT@zfs-auto-snap_weekly-2013-03-06-13h45
0 - 31K -
rpool/zones/tomcat/ROOT@zfs-auto-snap_daily-2013-03-08-13h46
0 - 31K -
rpool/zones/tomcat/ROOT@zfs-auto-snap_hourly-2013-03-08-15h46
0 - 31K -
rpool/zones/tomcat/ROOT@zfs-auto-snap_frequent-2013-03-08-16h31
0 - 31K -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-02-20-18h45
328K - 317M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-02-20-20h45
208K - 317M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-02-20-21h45
271K - 317M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-02-20-22h45
207K - 358M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-02-21-02h45
33K - 358M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_weekly-2013-02-27-13h45
62K - 358M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-02-28-02h45
26K - 358M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_daily-2013-03-02-13h45
27K - 358M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_daily-2013-03-03-13h45
27K - 358M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-03-20h45
2.56M - 359M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-04-02h46
76K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_daily-2013-03-04-13h45
42K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-05-02h45
69K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-05-10h45
91K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-05-12h45
55K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_daily-2013-03-05-13h45
18K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_weekly-2013-03-06-13h45
25.5K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-07-02h48
25.5K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_daily-2013-03-07-13h46
25.5K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-08-12h46
24K - 362M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_daily-2013-03-08-13h46
48.2M - 413M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_hourly-2013-03-08-15h46
2.64M - 569M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_frequent-2013-03-08-16h01
28.0M - 594M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_frequent-2013-03-08-16h16
10.2M - 579M -
rpool/zones/tomcat/ROOT/zbe@zfs-auto-snap_frequent-2013-03-08-16h31
532K - 596M -
myad...@baptist.ds:~#
So, what did I do wrong?
I thought those files should have been gone, and the zone should have been set
back to the way it was at the snapshot I took...
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