From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: Fake RAID 10 on ASRock Z97 Extreme3 with Slackware 14.1 Date: Tue, 4 Nov 2014 08:57:55 +1100 Message-ID: <20141104085755.3ef82b3d@notabene.brown> References: <14976849ec4.ace7bf4939116.3019157828391505014@zoho.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/sSp=1CJtdK0MhF9cn3YXq/p"; protocol="application/pgp-signature" Return-path: In-Reply-To: <14976849ec4.ace7bf4939116.3019157828391505014@zoho.com> Sender: linux-raid-owner@vger.kernel.org To: gornea Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids --Sig_/sSp=1CJtdK0MhF9cn3YXq/p Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Mon, 03 Nov 2014 17:47:48 +0100 gornea wrote: >=20 > Hello, >=20 > I hope I'm on the right email list. I'm facing a problem during Slackware= 14.1 installation. I have a ASRock motherboard (Z97 Extreme3) with Intel R= apid Storage Technology 13. I have 4 identical new 4-TBy WD hard drives. I = configured the option ROM for RAID 10. When booting with Slackware 14.1 CD = md finds the array but it always mounts it read only. I tried to work on it= to make writable but I was not successful. I have tried to boot with the l= atest Ubuntu Server CD and it works well. I have also tried to delete the R= AID 10 in the option ROM and then create it with mdadm after booting with S= lackware 14.1 and I always produces a read only volume. I get no errors or = warnings and in general everything seems fine except that I can not write o= n it (for example I can not create partitions). The md version with Slackwa= re 14.1 boot disk is 3.2.6 and the kernel is 3.10.17. So I'm starting to wo= nder if actually there is a know problem with that md/kernel? Or maybe ther= e is a problem with the way I use it, but frankly I run out of ideas how to= proceed further. This is the output of /proc/mdstat >=20 > Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]= [multipath] > md126 : active (read-only) raid10 sda[3] sdb[2] sdc[1] sdd[0] > 7814032384 blocks super external:/md127/0 64K chunks 2 near-copies [4/4] = [UUUU] >=20 > md127 : inactive sda[3](S) sdb[2](S) sdc[1](S) sdd[0](S) > 9040 blocks super external:imsm >=20 > unused devices: >=20 > Thanks a lot for any suggestion about how to proceed! I would like to ins= tall the fake RAID if it is not impossible with Slackware 14.1. I know that= eventually it is possible to install a software RAID but I would like to u= nderstand why the Intel fake RAID is not working with Slackware 14.1. >=20 More likely a problem with Slackware than with the kernel/mdadm version. It should a lot like "mdmon" isn't running. If you simple run mdmon md127 & you will probably get write access. Mdadm should do this for you, or tell systemd to, depending on configuratio= n. NeilBrown --Sig_/sSp=1CJtdK0MhF9cn3YXq/p Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIVAwUBVFf6Yznsnt1WYoG5AQL3YhAAlOJHKkrJUS4dpX50p0ImQnFzygakqJyI NWyR27amhb7uUtlJSVZbz3tNrXLSuc6r3A+hOGoMW0n7RSSzBZqKHE0sUY3CxXSX 4Ib/4frPc44mAh00ClLvwpzUpepXVnumvymQcYNTtRe/0hYrr6NrXN3QtSkjhFBl YMpMGt+ZCFvNkxtmaoNXDfgwYIYjChHrKWsbLrsRLLeD+s19/eIsO1Q+q74czwWj cKu4W/hxjXM7ZoNRR7FWpDZrof6M3J7ZXZIua2Mf3ElSKTW5uf+sKocGOv3G54/g x2j2eFylumM/YyL81cy53HoQfridsjilSrBk9nrxTeCQdpaAlhuC/FZtyEOPunau sjHSZNdIn42e5gb8fhWbszkfc3Egw33a5j2vRYcJ1aAsGjYgtvzoeF63MMhOeLJT EhGrsV1pPPokwaQxjndvQUcscJZeCKPcDpsMwdulu5+yxHPghLQGHHUweUcFZ6p4 X9EBmOyf1cPK+7kKBSWaEPI5+ZHoEf46FjA17BRTXFWK3c3cNP6rsbOKGpPv6/UO R8Kv2/LQOvuVXCK0c21PV+eE+RPD1JMbo5AJbwLUt9PTaAWeQli93ZrwcgJXEYM8 aPXewj4n1qmXkJ1pKeaDXx/crwgYOWiKYd4ENXR4x8Qqf9SoCZuzIZFIW9QN/IPX FUK6M3GzKIA= =SbUg -----END PGP SIGNATURE----- --Sig_/sSp=1CJtdK0MhF9cn3YXq/p--