[CentOS] Disc layout advice
Steve Bonds
05s0pq602 at sneakemail.comTue Oct 6 18:59:16 UTC 2009
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On Tue, Oct 6, 2009 at 10:59 AM, Joseph L. Casale JCasale-at-activenetwerx.com wrote: > Yea I guess I was rather vague. I do plan to carve up the md device w/ lvm > once it's up. Historically I run pvcreate on lvm partitions for various reasons. > > Should I create an pvm partition on the md0 device? I was not even sure I could... I don't usually partition md devices, though I think it's possible. I can't really see why you would want to if you're using LVM. Which you should, since it makes resizing or adding filesystems so much more convenient. I *do* usually partition the underlying disk devices, mostly just to record what each partition is for should that disk get swapped around. As someone else noted, when using MD and/or LVM it's not technically required. Should you ever accidentally put one of those disks in a Windows host, you'll be glad you had a partition table, though... Here's the generic-ish process I use: 1) Create the RAID "md" devices (e.g. /dev/md0) 2) pvcreate the whole md device 3) add the physical volume you just created (e.g. /dev/md0) to a volume group (vgcreate or vgextend) 4) extend your logical volume(s) as desired 5) extend the filesystem on each logical volume -- Steve
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