From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <010901c2ba33$d3e5daf0$0f00a8c0@COMPAQ> From: "Sean Oh" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [linux-lvm] [Q] LVM snapshot volume extendable? Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Sun Jan 12 06:11:02 2003 List-Id: Content-Type: text/plain; charset="us-ascii" To: linux-lvm@sistina.com Hi I am using LVM 1.0.6, kernel 2.4.20 and XFS (from linux-2.4-xfs CVS). My question is that is the snapshot volume extendable? My environment is as follows: /dev/vg01/lv01 ---> XFS, 2G /dev/vg01/lv01_snap --> 256M, snapshot for /dev/vg01/lv01, mounted under /snap with ro,nouuid,usrquota,grpquota,noatime Now I have wrote a small shell scripts that if lv01_snap is more than 50% full, automatically increase the lv01_snap. But it seems to me that it does not work well.. What I did in the shell scripts are 'lvextend -L+256M /dev/vg01/lv01_snap' with/without 'xfs_growfs /snap'. After umounting the /snap and trying to remount /snap, it complaints as below XFS: recovery required required on read-only device XFS: write access unavailabe, cannot proceed XFS: log mount/recovery failed XFS: log mount failed mount: wrong fs type, bad option, bad superblock on /dev/vg01/lv01, or too many mounted file systems (aren't you trying to mount an extended partition, instead of some logical partition inside?) BTW, extending the original lv01 works fine with lvextend and xfs_growfs. Could someone please help? Thanks in advance