Adding a new hard drive to LVM
Derek Scollon
mailing.lists at scotwebsolutions.com
Tue Jun 7 19:41:34 UTC 2005
> On Tue, 2005-06-07 at 19:35 +0100, Derek Scollon wrote:
>> I'm running FC3 and currently have one 300GB SATA drive which looks like this.
>>
>> Filesystem 1K-blocks Used Available Use% Mounted on
>> /dev/mapper/VolGroup00-LogVol00
>> 286285288 239994144 31748708 89% /
>> /dev/sda1 101086 33733 62134 36% /boot
>> none 517796 0 517796 0% /dev/shm
>>
>> I've added a second drive today and am following the instructions here...
>>
>> http://www.hants.lug.org.uk/cgi-bin/wiki.pl?action=browse&id=LinuxHints/LogicalVolumeManagement&oldid=LogicalVolumeManagement
>> (section titled "Adding another disk")
>>
>> ...to add this drive to the volume group. I've successfully got
>> as far as step 5 and hit a problem, since trying to unmount that
>> volume group tells me that / is in use. Trying step 6 warns me that
>> running e2fsck on a mounted filesystem can cause severe damage, at
>> which point I chicken out. Is it safe to skip to step 7 and run
>> resize2fs without unmounting the filesystem first or should I be
>> doing something different?
> This may or may not work, but it's safe and it'll just refuse to do it
> if it can't:
> # ext2online /dev/VolGroup00/LogVol00
> You don't need to unmount the partition; in fact it won't work if you
> do.
> This assumes you're using an ext2 or ext3 filesystem.
> Paul.
> --
> Paul Howarth <paul at city-fan.org>
This worked perfectly, thanks. Churned away on the hard drives for 5 minutes or so and ended up with one volume 44% full, as expected.
--
Derek
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