Thanks Neil. Let me try the patch. - Senthil M -----Original Message----- From: Neil Brown [mailto:neilb@xxxxxxx] Sent: Thursday, December 10, 2009 3:00 PM To: SenthilKumar Muthukalai (WT01 - Telecom Equipment) Cc: linux-raid@xxxxxxxxxxxxxxx Subject: Re: Growing Linear RAID On Thu, 10 Dec 2009 13:54:29 +0530 <senthilkumar.muthukalai@xxxxxxxxx> wrote: > 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 - that narrows it down quite a bit. I think that if you run mdadm under 'strace' you will find that the ioctl fails with ENOSPC. It seems that growing a linear array didn't work reliably until 2.6.22. You need commit a778b73ff793d34c0082f76110f73a7754915067 to make it work properly. 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
