[OpenIndiana-discuss] ZFS Rollback Question
Timothy Coalson
tsc5yc at mst.edu
Sat Mar 9 00:04:44 UTC 2013
Correction to 1)...first off, you did use -r, but second, from the man page:
" The -rR options do not recursively destroy the child
snapshots of a recursive snapshot. Only the top-level
recursive snapshot is destroyed by either of these
options. To completely roll back a recursive snapshot,
you must rollback the individual child snapshots."
Tim
On Fri, Mar 8, 2013 at 6:02 PM, Timothy Coalson <tsc5yc at mst.edu> wrote:
> Two thoughts:
>
> 1) you didn't use the -r or -R flags to zfs rollback
>
> 2) are /usr or /var on a different filesystem? Probably not, but good to
> check.
>
> Tim
>
>
> On Fri, Mar 8, 2013 at 5:58 PM, DormitionSkete at hotmail.com <
> dormitionskete at hotmail.com> wrote:
>
>> I decided to try out the zfs rollback feature today. I halted my tomcat
>> zone, and took a zfs snapshot of it like this:
>>
>>
>> myadmin at baptist.ds:~# zoneadm -z tomcat halt
>> myadmin at 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
>> myadmin at baptist.ds:~# zfs snapshot rpool/zones/tomcat at 2013-0308-1553
>> myadmin at 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.
>>
>>
>> myadmin at baptist.ds:~# zoneadm -z tomcat halt
>> myadmin at baptist.ds:~# zfs rollback rpool/zones/tomcat at 2013-0308-1553
>> cannot rollback to 'rpool/zones/tomcat at 2013-0308-1553': more recent
>> snapshots exist
>> use '-r' to force deletion of the following snapshots:
>> rpool/zones/tomcat at zfs-auto-snap_frequent-2013-03-08-16h01
>> myadmin at baptist.ds:~# zfs rollback -r rpool/zones/tomcat at 2013-0308-1553
>> myadmin at baptist.ds:~# zoneadm -z tomcat boot
>> myadmin at 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.
>>
>>
>> myadmin at baptist.ds:~# zfs list -t snapshot | grep tomcat
>> rpool/zones/tomcat at zfs-auto-snap_hourly-2013-02-20-21h45
>> 19K - 32K -
>> rpool/zones/tomcat at zfs-auto-snap_weekly-2013-02-27-13h45
>> 18K - 33K -
>> rpool/zones/tomcat at zfs-auto-snap_weekly-2013-03-06-13h45
>> 18K - 33K -
>> rpool/zones/tomcat at zfs-auto-snap_daily-2013-03-08-13h46
>> 0 - 33K -
>> rpool/zones/tomcat at zfs-auto-snap_hourly-2013-03-08-15h46
>> 0 - 33K -
>> rpool/zones/tomcat at 2013-0308-1553
>> 0 - 33K -
>> rpool/zones/tomcat at zfs-auto-snap_frequent-2013-03-08-16h31
>> 0 - 33K -
>> rpool/zones/tomcat/ROOT at zfs-auto-snap_weekly-2013-03-06-13h45
>> 0 - 31K -
>> rpool/zones/tomcat/ROOT at zfs-auto-snap_daily-2013-03-08-13h46
>> 0 - 31K -
>> rpool/zones/tomcat/ROOT at zfs-auto-snap_hourly-2013-03-08-15h46
>> 0 - 31K -
>> rpool/zones/tomcat/ROOT at zfs-auto-snap_frequent-2013-03-08-16h31
>> 0 - 31K -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-02-20-18h45
>> 328K - 317M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-02-20-20h45
>> 208K - 317M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-02-20-21h45
>> 271K - 317M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-02-20-22h45
>> 207K - 358M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-02-21-02h45
>> 33K - 358M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_weekly-2013-02-27-13h45
>> 62K - 358M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-02-28-02h45
>> 26K - 358M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_daily-2013-03-02-13h45
>> 27K - 358M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_daily-2013-03-03-13h45
>> 27K - 358M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-03-20h45
>> 2.56M - 359M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-04-02h46
>> 76K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_daily-2013-03-04-13h45
>> 42K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-05-02h45
>> 69K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-05-10h45
>> 91K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-05-12h45
>> 55K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_daily-2013-03-05-13h45
>> 18K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_weekly-2013-03-06-13h45
>> 25.5K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-07-02h48
>> 25.5K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_daily-2013-03-07-13h46
>> 25.5K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-08-12h46
>> 24K - 362M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_daily-2013-03-08-13h46
>> 48.2M - 413M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_hourly-2013-03-08-15h46
>> 2.64M - 569M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_frequent-2013-03-08-16h01
>> 28.0M - 594M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_frequent-2013-03-08-16h16
>> 10.2M - 579M -
>> rpool/zones/tomcat/ROOT/zbe at zfs-auto-snap_frequent-2013-03-08-16h31
>> 532K - 596M -
>> myadmin at 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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>
>
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