On 8/30/06, Robert Milkowski <[EMAIL PROTECTED]> wrote:
Hello Jason,
Tuesday, August 29, 2006, 9:35:13 PM, you wrote:
JAH> On Aug 29, 2006, at 12:17 PM, James Dickens wrote:
>> ZFS + rsync, backup on steroids.
>>
>> I was thinking today about backing up filesystems, and came up with an
>> awesome idea. Use the power of rsync and ZFS together.
>>
>> Start with a one or two large SATA/PATA drives if you use two and
>> don't need the space you can mirror other wise just use as in raid0,
>> enable compression unless your files are mostly precompressed, use
>> rsync as the backup tool, the first time you just copy the data over.
>> After you are done, take a snapshot, export the pool. And uninstall
>> the drives until next time. When next time rolls around have rsync
>> update the changed files, as it does block copies of changed data,
>> only a small part of the data has changed. After than is done, take a
>> snapshot.
>>
>> Now thanks to ZFS you have complete access to incremental backups,
>> just look at the desired snapshots. For now rsync doesn't support
>> nfsv4 acls, but at least you have the data.
JAH> Yes I concur. This is how we do our backups, rsync + rolling over
JAH> snapshots.
Why not make a snapshots on a production and then send incremental
backups over net? Especially with a lot of files it should be MUCH
faster than rsync.
because its a ZFS limited solution, if the source is not ZFS it won't
work, and i'm not sure how much faster incrementals would be than
rsysnc since rsync only shares checksums untill it finds a block that
has changed.
James
--
Best regards,
Robert mailto:[EMAIL PROTECTED]
http://milek.blogspot.com
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