On Tue, Jun 26, 2012 at 05:26:53PM +1100, ???????? ????????? ?????????? wrote: > Hello! > I'm trying to figure out how one can recover from linear mode crash. > I'm aware that from this type of mode I can recover only part of data, there's no redundancy in linear mode and that's ok for me. > I'm ok with part of it. > > so far I'm trying to get it work in VM for now. > > > I've added two 50M disks to my VM. > > and partiotioned them like this: > Device Boot Start End Blocks Id System > /dev/vdb1 2048 102399 50176 fd Linux raid autodetect > Device Boot Start End Blocks Id System > /dev/vdc1 2048 102399 50176 fd Linux raid autodetect > > mdadm --create --verbose /dev/md0 --level linear --raid-disks 2 /dev/vdb1 /dev/vdc1 > mdadm --detail --scan >> /etc/mdadm/mdadm.conf > > mkfs.xfs /dev/md0 > mount /dev/md0 /mnt/linear/ > > mkdir /mnt/linear/etc > mkdir /mnt/linear/etc2 > mkdir /mnt/linear/etc3 > > filled with some data > cp -r /etc/* /mnt/linear/etc/ > cp -r /etc/* /mnt/linear/etc2/ > cp -r /etc/* /mnt/linear/etc3/ > > df -h /dev/md0 > Filesystem Size Used Avail Use% Mounted on > /dev/md0 92M 69M 23M 76% /mnt/linear > > then I remove one disk from my VM > > umount /mnt/linear > mdadm --stop /dev/md0 > > I've added another clear disk image 50M. > > make partitions on new disk > sfdisk -d /dev/vdb | sfdisk /dev/vdc > > how should I proceed ? > > thanks a lot! Thaks for the effort. Maybe, when you have found a robust way to do it, then you could add the description to our wiki, at https://raid.wiki.kernel.org/ (BTW, the wiki looks like it is open again for editing). best regards keld -- 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
