On 15 Oct 2015, at 1:39, Robert Mustacchi wrote:
On 10/14/15 4:02 , Jeb Winders wrote:
Apology accepted Robert and thanks for the explanation.
As to activity on the pool -- I started out with 2.2TB used in this
pool
with 1.3T free and now I have 1.55T and 1.92T free. before i
realized what
has gone on in my zones/archive i had already written 4gb to a new
zone.
I have now stopped all the running zones and have not done any other
ops
with the zones pool. everything is still mounted read-write
Should I still try a rollback ? or is it not worth it at this point.
At that point, unfortunately, the various uberblocks in ZFS will have
been overwritten without a snapshot to anchor the old data in place.
You
could try and scan the unallocated portions of the drives to attempt
to
find data blocks, but at that point it's much more of a forensic
approach and if the data blocks aren't really self-evident to their
contents, trying to piece it together will be rather arduous. It's not
something I've done, so I'm not sure how to advise someone to even go
down that path.
That is something I have tried, and without a forensic toolset to help
it's extremely frustrating. In my example it was a source file disk
which had become scrambled and although I could easily see fragments of
the recently edited files I was trying to recover, the full versions
were surprisingly elusive. This was on a rather primitive file system
where all files were contiguous, and being source code the contents
were indeed self-evident. Long story cut short: the only reasonable
way forward was to recreate the sources concerned from scratch.
BTW I've noticed a typo in the man page for vmadm:
archive_on_delete:
When archive_on_delete is set to 'true' and the VM is
deleted and the
zones/archive dataset exists and is mounted on
/zones/archive,
...
The files specified will be written to the directory
/zones/archives/<uuid>.
^
SmartOS version: joyent_20151001T070028Z
--
Paul Sture
-------------------------------------------
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