On Mar 26, 2013, at 11:28 PM, Hans-Peter Jansen <hpj@xxxxxxxxx> wrote: > Hi Tarak, > > On Mittwoch, 27. März 2013 05:17:19 Tarak Anumolu wrote: >> Hi >> >> My name is TARAK. >> >> We got some problem in using mdadm 3.2.5. >> >> We are trying to do RAID operation on 8 harddisks each of size 1TB with 7 >> harddisks as raid devices and 1 hard disk as spare device. > >> Command : mdadm -C /dev/md0 -f --meta-version 0.9 -l5 -n7 -x1 /dev/sd[a-h]1 > > Obviously, you already created partitions on your harddisks. > >> After the RAID operation is completed when we check the status, > > Beware, the raid creation is a long process, working in background. > > To check your md, use: "cat /proc/mdstat". This is the most important command > in using linux md. > >> We are >> getting the following errors. > >> # parted - s /dev/md0 print >> Model: Linux Software RAID Array (md) >> Disk /dev/md0: 6001GB >> Sector size (logical/physical): 512B/512B >> Partition Table: gpt >> Number Start End Size File system Name Flags >> 1 1049kB 60.0GB 60.0GB xfs primary >> 2 60.0GB 6001GB 5941GB primary > > Now, you want to access the md partition as a harddisk?!? > > What you're trying to do makes little sense. Think of the md partition as an > ordinary one. Partitioning happens *before* md creation (if necessary at all, > as you can create your mds directly on the harddisks, as long as you need just > one md, and don't want to boot from it). The *next* logical step here is > creating a filesystem on the md partition. > > E.g.: mkfs.xfs /dev/md0 > > Then assign a mount point (in /etc/fstab), and use it. Call back (to this ML), > when you reached this point, as there are a few more important steps to follow > for maximum enjoyment. > > Cheers, > Pete > > -- > 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 I would only add that if you do want to split it into smaller sections, you may be interested in LVM on RAID. I also wonder why you chose metadata 0.9 as that limits you in the future if you ever wish to use large devices (>2TB or 4TB depending on your kernel) -- 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
