Migrating the SAN lun in Linux

Question

How to perform LUN migration in Linux (using LVM and native multipath) from one storage device to another storage device

Is there a chance you could tell us some of the details involved please - you've put almost zero effort into this question as it's essentially unanswerable until you do.

troyengel · Answer 1 · 2010-11-25 15:28:54Z

Expanding on janneb's comment because I want formatting:

Given:

/dev/oldSAN1 (Linux LVM partition)
/dev/newSAN1 (linux LVM partition)
VG "mystuff"

Then:

# pvcreate /dev/newSAN1
# vgextend mystuff /dev/newSAN1
# pvmove -v /dev/oldSAN1
# vgreduce -a mystuff
# pvremove /dev/oldSAN1

Obviously, make sure you have a good backup before starting. /dev/newSAN1 has to be as large as or larger than /dev/oldSAN1 as you'd think.

janneb · Answer 2 · 2010-11-25 13:29:57Z

up vote 1 down vote

Use the "pvmove" command.

answered Nov 25 '10 at 13:29

janneb
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2 Answers