We've been using ZFS for about two years now and make a lot of use of zfs send/receive to send our data from one X4500 to another. This has been working well for the past 18 months that we've been doing the sends.
I recently upgraded the receiving thumper to Solaris 10 u8 and since then,
I've been having no end of problems. We were asked to upgrade to attempt to
resolve a driver issue we've been having with the X4500s and I also
upgraded the zfs version running on the system.
The last snapshot received was named thumperpool/m...@200911301000 and since
then we've been completely unable to receive any snapshots -- even if I've
literally just snapshotted, removed back to the previous snapshot, and then
tried to receive that same snapshot.
Here's a demo of the behaviour we're seeing:
117 r...@thumper2:~> cat 1000_1100 | zfs receive -v thumperpool
receiving incremental stream of vlepool/m...@200911301100 into
thumperp...@200911301100
cannot receive incremental stream: destination thumperpool has been modified
since most recent snapshot
If I modify any data on the system, snapshot it, rollback the system, and
attempt to receive the snapshot back, I get the same:
122 r...@thumper2:/thumperpool/mnt> zfs list | tail
thumperpool/m...@200911291700 131M - 1.77T -
thumperpool/m...@200911292200 114M - 1.77T -
thumperpool/m...@200911300000 85.2M - 1.77T -
thumperpool/m...@200911300100 87.2M - 1.77T -
thumperpool/m...@200911300300 102M - 1.77T -
thumperpool/m...@200911300400 81.0M - 1.77T -
thumperpool/m...@200911300500 83.3M - 1.77T -
thumperpool/m...@200911300700 86.7M - 1.77T -
thumperpool/m...@200911300900 102M - 1.77T -
thumperpool/m...@200911301000 0 - 1.77T -
123 r...@thumper2:/thumperpool/mnt> dd if=/dev/zero of=mymodification bs=512
count=100
100+0 records in
100+0 records out
124 r...@thumper2:/thumperpool/mnt> zfs list | tail
thumperpool/m...@200911291700 131M - 1.77T -
thumperpool/m...@200911292200 114M - 1.77T -
thumperpool/m...@200911300000 85.2M - 1.77T -
thumperpool/m...@200911300100 87.2M - 1.77T -
thumperpool/m...@200911300300 102M - 1.77T -
thumperpool/m...@200911300400 81.0M - 1.77T -
thumperpool/m...@200911300500 83.3M - 1.77T -
thumperpool/m...@200911300700 86.7M - 1.77T -
thumperpool/m...@200911300900 102M - 1.77T -
thumperpool/m...@200911301000 73.1K - 1.77T -
125 r...@thumper2:/thumperpool/mnt> zfs snapshot thumperpool/m...@fail_demo
126 r...@thumper2:/thumperpool/mnt> zfs list | tail
thumperpool/m...@200911292200 114M - 1.77T -
thumperpool/m...@200911300000 85.2M - 1.77T -
thumperpool/m...@200911300100 87.2M - 1.77T -
thumperpool/m...@200911300300 102M - 1.77T -
thumperpool/m...@200911300400 81.0M - 1.77T -
thumperpool/m...@200911300500 83.3M - 1.77T -
thumperpool/m...@200911300700 86.7M - 1.77T -
thumperpool/m...@200911300900 102M - 1.77T -
thumperpool/m...@200911301000 73.1K - 1.77T -
thumperpool/m...@fail_demo 0 - 1.77T -
127 r...@thumper2:/thumperpool/mnt> zfs send -i thumperpool/m...@200911301000
thumperpool/m...@fail_demo > /tmp/fail_demo
128 r...@thumper2:/thumperpool/mnt> zfs rollback thumperpool/m...@200911301000
cannot rollback to 'thumperpool/m...@200911301000': more recent snapshots exist
use '-r' to force deletion of the following snapshots:
thumperpool/m...@fail_demo
129 r...@thumper2:/thumperpool/mnt> zfs rollback -r
thumperpool/m...@200911301000
130 r...@thumper2:/thumperpool/mnt> zfs list | tail
thumperpool/m...@200911291700 131M - 1.77T -
thumperpool/m...@200911292200 114M - 1.77T -
thumperpool/m...@200911300000 85.2M - 1.77T -
thumperpool/m...@200911300100 87.2M - 1.77T -
thumperpool/m...@200911300300 102M - 1.77T -
thumperpool/m...@200911300400 81.0M - 1.77T -
thumperpool/m...@200911300500 83.3M - 1.77T -
thumperpool/m...@200911300700 86.7M - 1.77T -
thumperpool/m...@200911300900 102M - 1.77T -
thumperpool/m...@200911301000 0 - 1.77T -
131 r...@thumper2:/thumperpool/mnt> cat /tmp/fail_demo | zfs receive
thumperpool -v
too many arguments
usage:
receive [-vnF] <filesystem|volume|snapshot>
receive [-vnF] -d <filesystem>
For the property list, run: zfs set|get
For the delegated permission list, run: zfs allow|unallow
132 r...@thumper2:/thumperpool/mnt> cat /tmp/fail_demo | zfs receive -v
thumperpool
receiving incremental stream of thumperpool/m...@fail_demo into
thumperp...@fail_demo
cannot receive incremental stream: destination thumperpool has been modified
since most recent snapshot
133 r...@thumper2:/thumperpool/mnt> cat /tmp/fail_demo | zfs receive -vF
thumperpool
receiving incremental stream of thumperpool/m...@fail_demo into
thumperp...@fail_demo
cannot receive incremental stream: most recent snapshot of thumperpool does not
match incremental source
--
Systems Developer
e: andrew.nic...@luns.net.uk
im: a.nic...@jabber.lancs.ac.uk
t: +44 (0)1524 5 10147
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