I found the warning! "You must resize the partition now. The device that the partition on is now about 500Gb, but the partition is still 250Gb. If you're partition is ext2 or ext3, you can use resize2fs. A word of caution for you. I've used this utility many times, and it is necessary to do a e2fsck -f on the partition to be resized BOTH before and after. The program itself will require you to do it before. If you skip doing it after resize2fs completes, you will almost assuredly ruin your filesystem. I've skipped the fsck after the resize2fs myself 2-3 times, and it killed the filesystem every time. TJ Harrell" Guy -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of Guy Sent: Saturday, October 23, 2004 1:42 AM To: 'matt brennan'; linux-raid@xxxxxxxxxxxxxxx Subject: RE: Resizing raid-1 on replacing failed disk You will be replacing your boot disk (I think). This will be a grub or lilo issue. Please wait for someone to help with this! But not me! I don't trust my advice! Other than my advice to wait for help. :) I don't recall if the size will just grow when you replace with a larger disk. But if you know it will, then this should work (other than booting). Oops, I recall some issue resizing a file system, don't recall the issue, or how to deal with it. Will search and send another message if I find it. But I do have other notes: - backup * logically remove the failed disk - "mdadm /dev/md0 -r /dev/hdc1" - physically remove the failed disk - physically replace the failed disk with a larger disk - add the new disk to the array and allow to resync - fail and remove the active smaller disk * fail the smaller disk - "mdadm /dev/md0 -f /dev/hda1" * wait a few seconds (was some issue with failing and removing too quickly) * remove the smaller disk - "mdadm /dev/md0 -r /dev/hda1" - physically replace the active smaller disk with a larger disk - resize the ext3 partition Guy -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of matt brennan Sent: Saturday, October 23, 2004 12:11 AM To: linux-raid@xxxxxxxxxxxxxxx Subject: Resizing raid-1 on replacing failed disk I would like replace a failed disk in a raid-1 with a larger disk - and ultimately increase the size of the array (and ext3 partition) by subsequently adding a second larger disk in lieu of the currently active one. I am hoping someone will scan the following and briefly reply: "this looks ok" or "you forgot step(s) X" before I commence. <disclaimer> I have read the software-raid-howto, list faq, mdadm man pages and trawled this mailing list to try to ensure I am not posting a question that has been answered before. If you believe that this topic is well covered elsewhere, please smack me up and post a link. </disclaimer> Currently: kernel: 2.4.18 mdadm: 0.7.2-2 (version reported by dpkg) > # mdadm --detail /dev/md0 > /dev/md0: > Version : 00.90.00 > Creation Time : Sun Dec 23 05:46:51 2001 > Raid Level : raid1 > Array Size : 39078016 (37.26 GiB 40.01 GB) > Device Size : 39078016 (37.26 GiB 40.01 GB) > Raid Disks : 2 > Total Disks : 2 > Preferred Minor : 0 > Persistance : Superblock is persistant <snip> > Number Major Minor RaidDisk State > 0 3 1 0 active sync /dev/hda1 > 1 22 1 1 faulty /dev/hdc1 > UUID : 3e9f6b0c:e3c4d3cc:761130b2:d4f74686 Plan: - backup - physcially remove the failed disk - physcially replace the failed disk with a larger disk - add the new disk to the array and allow to resync - fail and remove the active smaller disk - physcially replace the active smaller disk with a larger disk - resize the ext3 partition Help: Could you indicate whether this is possible with the listed kernel and mdadm version before I kick off? Thanks and regards, matt - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
