> Hello all,
> What's the simplest way to grow an existing RAID-5 volume with VxVM. In
> the past I have been stripping and mirroring my 20 plus GB volume, which
> means a complete rebuild and restore if I want to grow these file
Let's assume you have an existing RAID-5 volume over 6 disks (not necessarily
the whole disk) in your storage array. The best way is to grow all the
subdisks in place. This may be done by rearranging your existing subdisks,
or if there is nothing after (physically on the disk) your existing subdisks,
you can grow there.
The easiest way would probably be to pick 6 new disks (if you have a 5
disk RAID-5 volume, pick 5 new disks)..
In between would be to use the same disks as in the first option, but have
the space allocated noncontiguously. This won't phase VxVM (we've done it)
but it will look kind of ugly and might be confusing to somebody later on.
Keeping it simpler is preferable.
The main point is that you need to pick as many new disks/subdisks as you have
disks in your current stripe to grow your volume (excluding the log subdisk).
There is a mail-list devoted specifically to issues of SparcStorage
Array management (be it Veritas VxVM, or Sun ODS). To subscribe send
words 'susbcribe ssa-managers'
Doug Hughes Engineering Network Services
System/Net Admin Auburn University