On Fri, 11 Mar 2011, Konstantin Olchanski wrote:
On Fri, Mar 11, 2011 at 08:59:15AM -0500, Robert P. J. Day wrote:
perhaps showing my ignorance but does mdadm allow you to do things
like resize "partitions"? i haven't worked with it, but i was under
the impression it was strictly for RAID.
I am not sure what you mean by "resize partitions". This must be some kind
of data center thing, where they have unused unpartitioned disk space
sitting idle and where they have control freaks manage disk space
by keeping each file in a separate partition.
Robert, yes, mdadm is used only for setting up software raid.
In general I find LVM to be extremely useful, and we make extensive use of
it in the TRIUMF T1 data centre. There are only a few areas where we
deliberately don't use it:
- service nodes where the disk usage patterns are well understood
and do not change
- on hot-plug hardware raid-1 disk pairs that could potentially
be moved to another server as part of an emergency failover plan
(thus avoiding any issues with LVM when we move the disk pairs)
Konstantin, I multi-partition most systems:
/, swap, /boot, /usr, /var, /tmp, /opt, /home,
so I guess I might be considered one of those control freaks? ;-)
cheers, etc.
--
deatrich @ triumf.ca, Science/Atlas PH: +1 604-222-7665
<*> This moment's fortune cookie:
The odds are a million to one against your being one in a million.
