Here is the mail from henri.
Best regards,
Vitorio
Début du message réexpédié :
De : henri <he...@stmargarets.school.nz>
Date : 4 juin 2009 00:30:32 HAEC
À : Mac User FR <macuse...@free.fr>
Objet : Rép : WARNING: . . . .failed verification -- update
discarded (will try again).
I was going to write a daemon to manage suspend and resume of VM
images during backups. After designing the system (on paper - not in
code) I realized that this system was probably not required for
dealing with VM backups.
The reason I came to this conclusion was because I realized I could
just enable auto-protect (automated snapshots of the VM) and then
backup the live VM. Is this not the case?
Any information or experiences would be very helpful. I would be
particularly interested to know if anyone backed up running VM and
then had issues rolling back to a known good snap-shot?
Maybe the design (still in my draw) will actually be of some use?
Thanks.
Le 5 juin 09 à 00:42, JW a écrit :
On Thursday 04 June 2009 03:29:49 you wrote:
r you can use snapshots as suggested by
henri. I don't know what would exactly a snapshot do. A snapshot by
the virtualization program or by the filesystem? I think if the
snapshot is made by the virtualization program it may be safe for ram
recovering issues, but filesystem snapshot is not. You will still
need
to save regularly open files from the guest OS.
Thank you for taking the time to answer. As an aside, I did not
receive any
emails from "henri" and i don't see any on the list - what did he
say? I'm
sure he's talking about VM snapshots, not FS. I am aware of the
issues you
raised and I do, in fact, backup the internal contents of the Guest
OS. But I
also backup the actual VM disk-image-files because recreating VMs from
scratch is not fun - I can usually use the backup, and then "restore"
whatever data might be missing "inside" the VM guest OS. At least
the main
system setup is preserved.
In other words, it's a third-level backup just to save me time in
the event
of catastrophic failure. I also have an original copy of the VM from
when it
was first created (and that backup was made with the VM guest
powered off).
I have absolutely no idea about the "will try again" part. Maybe
Wayne
or Matt could give you the answer.
Carlos' answer was pretty good. Thank you.
JW
--
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System Administrator - Cedar Creek Software
http://www.cedarcreeksoftware.com
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