I don't understand the size of your array! If you have 3 disks about 200G each, your RAID5 array should be about 400G. But your array is 1171815940 blocks! That's 1171G, about 3 times larger than it should be. Just to verify the size of the disks and the array, do these commands: fdisk -l /dev/hdg fdisk -l /dev/hdc fdisk -l /dev/hdk fdisk -l /dev/hdi fdisk -l /dev/hda cat /proc/mdstat mdadm -D /dev/md0 mdadm -D /dev/md1 Guy -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of TJ Harrell Sent: Monday, May 17, 2004 11:09 AM To: linux-raid@xxxxxxxxxxxxxxx Subject: raidreconf won't resize a RAID 5 array. Can it be done with mkraid -f ? I have a raid 5 array consisting of 3 disks. The smallest disk is 195191168 blocks. The array only uses 172551296 blocks from each device. Numbers ar from output of mdadm. I would like to grow the array to the largest posssible size. I tried doing a raidreconf using identical settings in raidtab.old and raidtab.new, and it said the size would remain unchanged when it asked for confirmation. Is there a way to tweak it to do what I want, or could I just mkraid -f the existing array? I'm afraid if I just do a mkraid -f it will fubar the old array by laying out parity info differently or something since the size of the array will be different. Raidtab: raiddev /dev/md0 raid-level linear nr-raid-disks 3 persistent-superblock 1 chunk-size 128 device /dev/hdk1 raid-disk 0 device /dev/hdi1 raid-disk 1 device /dev/hda3 raid-disk 2 raiddev /dev/md1 raid-level 5 nr-raid-disks 3 persistent-superblock 1 chunk-size 64 device /dev/hdg1 raid-disk 0 device /dev/md0 failed-disk 1 device /dev/hdc1 raid-disk 2 Output of "raidreconf -o /etc/raidtab -n /etc/raidtab.new -m /dev/md1" Working with device /dev/md1 Parsing /etc/raidtab Parsing /etc/raidtab.new Size of old array: 1171815940 blocks, Size of new array: 1171815940 blocks Old raid-disk 0 has 3052474 chunks, 195358336 blocks Old raid-disk 1 has 3049861 chunks, 195191104 blocks Old raid-disk 2 has 3052474 chunks, 195358336 blocks New raid-disk 0 has 3052474 chunks, 195358336 blocks New raid-disk 1 has 3049861 chunks, 195191104 blocks New raid-disk 2 has 3052474 chunks, 195358336 blocks Using 64 Kbyte blocks to move from 64 Kbyte chunks to 64 Kbyte chunks. Detected 418432 KB of physical memory in system A maximum of 1394 outstanding requests is allowed --------------------------------------------------- I will convert your old device /dev/md1 of 6102335 blocks to a new device /dev/md1 of same size using a block-size of 64 KB Is this what you want? (yes/no): no - 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
