enlarging a ZFS file system
Ruben
mail at osfux.nl
Fri Jan 25 15:01:18 UTC 2019
Hi,
Not anything that is production ready - as far as I know-, but I did
read something in the last status update:
https://www.freebsd.org/news/status/report-2018-01-2018-09.html
(look for "OpenZFS RAID-Z Expansion project" )
Regards,
ruben
On 1/25/19 3:43 PM, Christian Baer wrote:
> Hey again everyone!
>
> I have a system with 5 drives running a RAIDZ2. The file system is
> getting a little cramped, so I would like to extend it.
>
> Ideally I'd like to add 2 or three (identical) drives to the pool, let
> the system work a little and then have a result as if I'd created the
> whole thing from the start with 7 or 8 drives. Just to be clear: The
> result should be a RAIDZ2 with 7 or 8 drives (depending on how many I add).
>
> A couple of years back, I read up on if this were possible and the only
> way to enlarge a RAIDZ at the time was to replace *all* the existing
> drives piece by piece with bigger ones and let the RAID heal drive by
> drive. During my research I did stumble on a thread where developers of
> ZFS were discussing that what I would like to do was actually a good
> idea and a relatively widely requested feature. I didn't participate in
> the discussion and for some reason cannot find it anymore. I must admit
> that I didn't save the URL at the time. :-(
>
> Has there been any development in this direction? Can what I'd like to
> do be done with FreeBSD today? The drives in question are used for
> archive purposes and don't really see much action, so I am not worried
> that they will die it the data on them gets copied around a fair bit.
>
> Y'all have a nice weekend! ;-)
>
> Regards,
> Chris
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