From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Frey Subject: Re: IMSM Raid 5 always read only and gone after reboot Date: Tue, 16 Aug 2011 21:15:49 -0700 Message-ID: <4E4B4075.2060400@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Iwan Zarembo Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 08/16/11 13:19, Iwan Zarembo wrote: > I also wanted to reuse my four old SAMSUNG HD103UJ 1 TB hard drives. > In the past I used mdadm as fake raid level 5 and everything worked > just fine. Now with the upgrade I wanted to use the Intel RAID > Controller on my mainboard. The advantage is that I would be able to > access the raid drive from my alternative windows system. (snip) >=20 > I learned that md126 is so long read only until it was used the first > time. So I tried to create a partition with the documentation from th= e > wiki, but not with ext3. I used ext4 for this. >=20 > # mkfs.ext4 -v -m .1 -b 4096 -E stride=3D32,stripe-width=3D64 /dev/= md/raid > The result was: > mke2fs 1.41.14 (22-Dec-2010) > fs_types f=C3=BCr mke2fs.conf L=C3=B6sung: 'ext4' > /dev/md/raid: The operation is not allowed then creating Superblocks. > Original message in German: Die Operation ist nicht erlaubt beim > Erstellen des Superblocks >=20 Are ext4 partitions even accessible in Windows? I remember trying that myself and not finding a solution. My comment in the previous message about creating the filesystem on the raid directly is probably not a good idea in this case, Windows probabl= y won't like that. You'd have to create a partition. Dan -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html