Neil, I get only the following message under /var/log/ [root@NAS00226b1755a0 ~]# mdadm /dev/md0 --grow --add /dev/sata3 mdadm: Cannot add new disk to this array Dec 9 20:37:58 NAS00226b1755a0 kernel: md: export_rdev(sdc) [root@NAS00226b1755a0 ~]# mdadm /dev/md0 --grow --add /dev/sata4 mdadm: Cannot add new disk to this array Dec 9 20:38:30 NAS00226b1755a0 kernel: md: export_rdev(sdd) Thanks, Senthil M -----Original Message----- From: Neil Brown [mailto:neilb@xxxxxxx] Sent: Thursday, December 10, 2009 7:04 AM To: SenthilKumar Muthukalai (WT01 - Telecom Equipment) Cc: linux-raid@xxxxxxxxxxxxxxx Subject: Re: Growing Linear RAID On Wed, 9 Dec 2009 20:31:54 +0530 <senthilkumar.muthukalai@xxxxxxxxx> wrote: > Hi, > > I am trying to add a disk to a Linear Raid which was created with 2 > disks. > We use linux-2.6.18 and mdadm-2.6.4. > I guess these support the above mentioned disk addition. Yes, should work. This functionality was introduced in 2.6.18. > root@NAS00226b1755a0 ~]# mdadm /dev/md0 --grow --add /dev/sata3 This is the correct usage but, > mdadm: Cannot add new disk to this array This indicates that something went wrong. Do you get any messages in the kernel logs at this point? NeilBrown -- 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
