Fwd: rsync --link-dest and --files-from lead by a "change list" from some file system audit tool (Was: Re: cut-off time for rsync ?)
rsync-list-m829 at sizone.org
Thu Jul 16 17:49:40 UTC 2015
yeah, i read somewhere that zfs DOES have separate tuning for metadata
and data cache, but i need to read up on that more.
as for heavy block duplication: daily backups of the whole system = alot of dupe.
On Thu, Jul 16, 2015 at 05:42:32PM +0000, Andrew Gideon said:
>On Mon, 13 Jul 2015 17:38:35 -0400, Selva Nair wrote:
>> As with any dedup solution, performance does take a hit and its often
>> not worth it unless you have a lot of duplication in the data.
>This is so only in some volumes in our case, but it appears that zfs
>permits this to be enabled/disabled on a per-volume basis. That would
>work for us.
>Is there a way to save cycles by offering zfs a hint as to where a
>previous copy of a file's blocks may be found?
> - Andrew
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