RAID online capacity expansion

Martin Hepworth maxsec at
Thu Jun 22 21:45:34 UTC 2006


You'll need to use vinum as a volume manager first. Wouldn't recommend it at
all on a mounted filesystem, this can give you alsorts of worries.

I'd think about why you need to grow the volume, esp as any expansion of a
RAID set will normally result in poor performance, unless you backup the
data, rebuild the RAID set/filesystem and then restore the data.

IE plan for any changes first.


On 6/21/06, Josh Endries <josh at> wrote:
> Hello,
> Has anyone out there successfully done an online expansion of a RAID
> array in FreeBSD? How is it done and with what hardware did it work?
> From what I can gather, it's not possible. Aside from the fact that
> fdisk(8) says "Editing an existing slice will most likely result in the
> loss of all data in that slice", growfs(8) says it cannot enlarge a
> mounted filesystem. disklabel seems to be okay with making live changes,
> but I haven't tested it.
> Is there any way to do this in FreeBSD or is Linux+LVM the way to go?
> Thanks,
> Josh
> _______________________________________________
> freebsd-questions at mailing list
> To unsubscribe, send any mail to "
> freebsd-questions-unsubscribe at"

More information about the freebsd-questions mailing list