Hi folks, Since I am the author of the EMC knowledge base article (emc122304) mentioned I feel I should respond to this thread. Andrey, You are correct. Overcautious is exactly what I was shooting for...so it worked. Remember, complete newbies (Windows Admins that get Linux added to their responsibility) read these knowledge base articles and then try them out on their company's vital data. Limin, LVM can be done online by adding an additional PV. I've had a customer expand their single PV "behind the scenes". Is there a way to get LVM to recognize a resized PV? If so please share because I couldn't find a command to do it. Stephen, The article is dated 11/18/2005 and states "ext3 does not support online expansion...yet". So yes it is very out of date. I will get to work updating emc122304. Did this behavior start in base RHEL4 (2.6.9-5)? Cheers, -Keith -----Original Message----- From: linux-scsi-owner@xxxxxxxxxxxxxxx [mailto:linux-scsi-owner@xxxxxxxxxxxxxxx] On Behalf Of Stephen C. Tweedie Sent: Thursday, May 25, 2006 7:46 AM To: admitriev@xxxxxxxxxxx Cc: linux-scsi@xxxxxxxxxxxxxxx; Stephen Tweedie Subject: Re: resizing LUN (not file system) while the file system (ext3) isonline Hi, On Thu, 2006-05-25 at 01:16 -0400, Andrey Dmitriev wrote: > I understand that ext3 doesn't support online expansion (not in RedHat ES/AS > at least) Yes it does, and it should work fine in RHEL-4, or FC-3 or later. Ted just integrated the online resize user-space tools into upstream e2fsprogs a couple of months ago, and only this week he turned on the resize inode feature in mke2fs by default. > However, just because the disk array can be done online that does not mean > the application layer can handle online expansion (some file systems can > handle online expansion, currently ext3 cannot)." Out-of-date information. :-) Cheers, Stephen - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html