[zfs-discuss] Need to clear my understanding with ZFS snapshot. please help.
lindsay.mathieson at gmail.com
Fri Dec 4 16:20:12 EST 2015
On 5/12/2015 1:07 AM, Muhammad Yousuf Khan via zfs-discuss wrote:
> anyways. once the snapshot is completed i deleted the 3GB files that i
> place for testing. and ran the rollback command to bring back my VM
> state which has the 3GB files. which is technically tank/vm at 3g. the
> snapshot rolledback succesfully however when i restart the VM. nothing
> happend. the data is still missing.
Snapshotting live machines is going to be unpredictable -there's
typically a lot of caching going on and data might not yet be written to
I'd suggest testing the following:
1. Stop the VM
2. Snapshot it
3. Start the VM
4. Copy your 3GB file to the VM
5. Stop the VM
6. Snapshot it.
Now do your comparisons.
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