RAID online capacity expansion
maxsec at gmail.com
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 endries.org> wrote:
> 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?
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