zfs discuss - Jan 2009 - [storage-discuss] ZFS iscsi snapshot - VSS compatible?

I don''t know if VSS has this capability, but essentially if it can
temporarily quiesce a device like a data base does for "warm standby"
then a snapshot should work. This would be a very simple Windows side
script/batch:

1) Q-Disk
2) Remote trigger snapshot
3) Un Q-Disk

I have no idea where to even begin researching VSS unfortunately...

 James

(Sent from my mobile)


-----Original Message-----
From: Tim <tim at tcsac.net>
Sent: Wednesday, 07 Jan 2009 23:18
To: Jason J. W. Williams <jasonjwwilliams at gmail.com>
Cc: zfs-discuss at opensolaris.org; storage-discuss at opensolaris.org
Subject: Re: [storage-discuss] [zfs-discuss] ZFS iscsi snapshot - VSS
compatible?



On Wed, Jan 7, 2009 at 6:30 PM, Jason J. W. Williams <jasonjwwilliams at
gmailcom> wrote:
Since iSCSI is block-level, I don''t think the iSCSI intelligence at
 the file level you''re asking for is feasible. VSS is used at the
 file-system level on either NTFS partitions or over CIFS.

 -J
?

VSS integration with block protocols is most definitely possible.? It just
requires *intelligent* software running on the host side.? That intelligence
would likely need to come from Sun directly in the case of windows on raw
hardware as I don''t know of any third party apps that work universally
with any storage system.

 --Tim
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