On Fri, Nov 12, 2010 at 7:13 PM, Mike Viau <vi...@sheridanc.on.ca> 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<sdb> > [ 7.183179] md: bind<sda>
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. -- 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/aanlktikymzv8ctorpqgpgjw4ybvbbtmg0hgybe=do...@mail.gmail.com
