> On Fri, 12 Nov 2010 19:48:48 -0500 <tomh0...@gmail.com> wrote: > >>On Fri, Nov 12, 2010 at 7:13 PM, Mike V. wrote: > >> To: debian-user@lists.debian.org > >> Date: Thu, 11 Nov 2010 08:10:55 -0500 > >> > >> I am trying to re-setup my fake-raid (RAID1) volume with LVM2 like setup > >> previously. I had been using dmraid on a Lenny installation which gave me > >> (from memory) a block device like /dev/mapper/isw_xxxxxxxxxxx_ and also > >> a /dev/OneTB-RAID1, but have discovered that the mdadm has replaced > >> the older and believed to be obsolete dmraid for multiple disk/raid > >> support. > >> > >> Automatically the fake-raid LVM physical volume does not seem to be set up. > >> I believe my data is safe as I can insert a knoppix live-cd in the system > >> and > >> mount the fake-raid volume (and browse the files). I am planning on perhaps > >> purchasing another at least 1TB drive to backup the data before trying too > >> much fancy stuff with mdadm in fear of loosing the data. > >> > >> pvdisplay (showing the /dev/md/[device] not recognized yet by LVM2) > >> --- Physical volume --- > >> PV Name /dev/sdc7 > >> VG Name XENSTORE-VG > >> PV Size 46.56 GiB / not usable 2.00 MiB > >> Allocatable yes (but full) > >> PE Size 4.00 MiB > >> Total PE 11920 > >> Free PE 0 > >> Allocated PE 11920 > >> PV UUID wRa8xM-lcGZ-GwLX-F6bA-YiCj-c9e1-eMpPdL > >> > >> cat /proc/mdstat > >> Personalities : > >> md127 : inactive sda[1](S) sdb[0](S) > >> 4514 blocks super external:imsm > >> > >> ls -l /dev/md/imsm0 > >> lrwxrwxrwx 1 root root 8 Nov 7 08:07 /dev/md/imsm0 -> ../md127 > >> > >> ls -l /dev/md127 > >> brw-rw---- 1 root disk 9, 127 Nov 7 08:07 /dev/md127 > >> > >> update-initramfs -u > >> update-initramfs: Generating /boot/initrd.img-2.6.32-5-xen-amd64 > >> mdadm: cannot open /dev/md/OneTB-RAID1-PV: No such file or directory > > > > So it looks like I can not even access the md device the system created on > > boot. Does anyone have a guide or tips to migrating from the older dmraid > > to mdadm for fake-raid? > > > > fdisk -uc /dev/md127 > > Unable to read /dev/md127 > > > > dmesg > > [ 4.214092] device-mapper: uevent: version 1.0.3 > > [ 4.214495] device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) initialised: > > dm-de...@redhat.com > > [ 5.509386] udev[446]: starting version 163 > > [ 7.181418] md: md127 stopped. > > [ 7.183088] md: bind > > [ 7.183179] md: bind > > No necessarily being helpful but thought that I'd point out that > "pvdisplay" shows "/dev/sdc7" not "/dev/md127" and "cat /proc/mdstat" > shows both sda and sdb as spares... > > I'd ask on the mdraid list if I were you, especially since mdraid > replacing dmraid must be a recent change. > >
Thanks for the feedback. The physical logical volume on /dev/sdc7 actually not part of the fake-raid that I am trying to setup again, but /dev/sd[ab] certain are. I assume the '(S)' denoted them are spares? Do you know if there is any way to 'activate' them both for use like in 'activating' a LVM volume group? I noticed there is a Linux raid mailing list at: http://vger.kernel.org/vger-lists.html#linux-raid Is this the mailing list you were referring too? It seems like a devel list with patch submissions and stuff by looking at the archives. That is why I thought I'd try my luck on a user list as I am running Debian squeeze. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/bay148-w46ec0af1b6bf1a06e0472bef...@phx.gbl
