[linux-lvm] e2fsadm and snapshots?
freemyer at NorcrossGroup.com
Tue Nov 5 15:04:01 UTC 2002
>> On Nov 05, 2002 12:24 -0500, Greg Freemyer wrote:
>> > Andreas Dilger wrote:
>> > > I would suggest putting your snapshot LV onto a separate disk and see
>> > > that does.
>> > Can that be done?
>> > I thought the snapshot LV had to share the same VG/PV as the base LV.
>> Same VG, but it can be on any PV therein.
>> > Is there some way to force the snapshot on to separate physical drives.
>> You just specify the PV on which to create the snapshot LV. This is no
>> different than any other LV creation, for which you can optionally specify
>> the PV(s) on which it is created.
>> Cheers, Andreas
>> Andreas Dilger
I'm running lvm 1.0.3. Assuming this has the feature you describe, I assume the PV goes in the "PhysicalVolumePath" argument.
This is not described in my man entry.
Would the below be correct?
pvcreate /dev/sd1 /dev/sd2 # sd1 = 3ware raid, sd2 = physical drive.
vgcreate MYvg /dev/sd1 /dev/sd2
lvcreate -L 2G -n data MYvg /dev/sd1
lvcreate --snapshot --size 1G --name data_snap "/dev/MYvg/scratch" /dev/sd2
Thanks for bringing this "new to me" capability to my attention.
Deployment and Integration Specialist
Compaq ASE - Tru64 v4, v5
Compaq Master ASE - SAN Architect
The Norcross Group
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