Hi everyone,
I have a very strange problem. I've written a simple script that uses
zfs send/recv to send a filesystem between two hosts using ssh. Works
like a charm - most of the time. As you know we need a two snapshots
when we do a incremental send. But the problem is something is
touching my filesystems on the receiving side so they are no longer
identical. I'm doing a rollback and a couple of seconds later they are
different again. This has happened on a number of machines but not
always.
Real example
# zfs list -r data/appservers/appsvr2-zone
NAME USED AVAIL REFER MOUNTPOINT
data/appservers/appsvr2-zone 11.7G 77.1G 11.7G
/data/appservers/appsvr2-zonedata/appservers/[EMAIL PROTECTED]
100K - 11.7G -
# zfs rollback data/appservers/[EMAIL PROTECTED]
# zfs list -r data/appservers/appsvr2-zone
NAME USED AVAIL REFER MOUNTPOINT
data/appservers/appsvr2-zone 11.7G 77.1G 11.7G
/data/appservers/appsvr2-zonedata/appservers/[EMAIL PROTECTED]
0 - 11.7G -
... then wait a couple of seconds
# zfs list -r data/appservers/appsvr2-zone
NAME USED AVAIL REFER MOUNTPOINT
data/appservers/appsvr2-zone 11.7G 77.1G 11.7G
/data/appservers/appsvr2-zonedata/appservers/[EMAIL PROTECTED]
100K - 11.7G -
As you can see the snapshot is no longer identical to the filesystem
and I can't see anything touching the filesystem.
My workaround for this problem right now is to do a zfs umount before
I do the rollback and then I do zfs send/recv. The only problem is
once the changes are received zfs is mounting the filesystem again (I
assume this is a bug).
I'm running this on Solaris 10u2 sparc but I've seen this on x86 as well.
Does anyone have any pointers, ideas, suggestions?
Regards,
Nickus
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