[aklug] Re: Creepy fast backups using block level snapshots.. a bit like CDP but slower and cheaper.

From: Royce Williams <royce@tycho.org>
Date: Thu Aug 02 2012 - 20:41:02 AKDT

On Thu, Aug 2, 2012 at 5:14 PM, Shane Spencer <shane@bogomip.com> wrote:
> So here's my quicky log of commands that I'm running right now in
> order to do the following:
>
> make a sparse file on a dedicated "snapshot" disk for consistently
> running snapshots.
> make a loopback out of the file
> add the loopbacked file as an LVM PV
> extend my main VG
> make a snapshot using the entire size of the loopback file as the
> COW backing device
> back up the original block device (costly.. left out for testing reasons)
> back up the current COW layer (fast!)

How does performance compare to ZFS snapshots and send/receive?
---------
To unsubscribe, send email to <aklug-request@aklug.org>
with 'unsubscribe' in the message body.
Received on Thu Aug 2 20:41:31 2012

This archive was generated by hypermail 2.1.8 : Thu Aug 02 2012 - 20:41:31 AKDT