On Fri, April 9, 2010 01:31, Romanowski, John (OFT) wrote: > I used the "add the new PVs and delete the old (and let LVM migrate the > extents)" method to move off dasd and it worked well. If you can't take > the filesystems down the method has the advantage of no downtime, and LVM > moves only the used PE's (physical extents) not the unused ones. Try it on > a test server.
I've used this method more than once, mostly successfully. The only caveat is that if there's heavy I/O and limited memory for the LVM you can end up with lockups during the migration that may require a reboot to clear. There's no data loss and you can redo the migration from where it left off - but there's still an outage. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
