> -----Original Message----- > From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid- > owner@xxxxxxxxxxxxxxx] On Behalf Of Robert Minvielle > Sent: Tuesday, March 02, 2010 7:15 PM > To: linux-raid@xxxxxxxxxxxxxxx > Subject: mdadm question > > > I am trying to setup a new raid array on a debian box, and I have not run > into > this problem before. I could not find a mdadm list, so I will ask here. If > this > is totally off topic, please disregard. > > > I am attempting to setup a raid 6 array, but this is failing so I backing > down > to a no-frills raid 5 array. The system is Debian5, stock kernel, stock > everything. > The mdadm is the stock debian, pulled with apt-get, version 2.6.7. > The machine in question has one IDE drive for linux, and 45 SATA drives. I think that's your problem. The default for 2.6.7 is a version .90 superblock. The .90 superblock is limited to 28 devices in the array. Ise a version 1.x superblock, instead. > Debian > sees all of the drives, and I have fdisked all of them with one partition > of type > fd (Linux autodetect raid). fdisk -l /dev/sd[a-z] /dev/sdaa[a-s] shows > them all > with no problems. > > The issue is that when I do a > > mdadm --create /dev/md0 --level=5 --raid-devices=45 /dev/sd[a-z]1 > /dev/sda[a-s]1 Make that: ` mdadm --create /dev/md0 --level=5 --raid-devices=45 --metadata=1.x` /dev/sd[a-z]1 /dev/sda[a-s]1 where x is 0, 1, or 2 and I think you'll be fine. See the man page. > to create a raid array with no spares, all defaults, it returns with > > invalid number of raid devices. > > I have searched the web to no avail. --verbose does not increase > verbosity. There > are no debug switches (that I know of) to mdadm. log files show nothing. > Leaving off > --raid-devices=45 does nothing. Changing the number of devices just for > fun does > nothing. (45,44,43,2,whatever). I am not sure if this is a problem with > this version > in debian, the number of drives that I have, or the setup. I have done > this before > (with a few less drives) with no problems. > > Any suggestions would be appreciated. > > Thanks. > > > > > -- > 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
