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Re: Possible Alternative to LVM


I'm assuming it is, as it seems to be based off of the same codebase that
the backup software they put out uses (which is point in time consistent.

I know that the backup server builds a kernel module, and from what I'm
reading, so does hcp. (Again, speaking of the backup software here, but I
assume hcp works the same): The kernel module sits between the filesystem
and the block device.

The info page for hcp claims:

Consistent Point-in-Time Snapshots
Hot Copy very quickly and efficiently puts even the busiest file systems
into a totally consistent state for brief instant to take a point-in-time


-----Original Message-----
From: Eric Bergen [mailto:eric@xxxxxxxxxxxxxxxxx] 
Sent: Monday, January 05, 2009 10:44 AM
To: Michael M.
Cc: mylvmbackup-discuss@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Mylvmbackup-discuss] Possible Alternative to LVM

Hi Michael,

How does the linux hot copy work? Is it an atomic snapshot?


On Mon, Jan 5, 2009 at 8:50 AM, Michael M. <michael@xxxxxxxxxxxx> wrote:
> For those of us who did not set up our MySQL on LVM initially, there is a
> possible alternative. I'm posting it to the list:
> http://www.r1soft.com/products/linux-hot-copy/
> I stumbled across this, because I use r1soft's backup software. However,
> adding support for hcp to mylvmbackup would be beneficial for those of us
> (like me) that didn't create LVM volumes for MySQL to live on.
> Michael
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