Hi All, mdadm --assemble /dev/md/debian:0 --update=name -v /dev/sdb2 --run started the container with the 1 drive and I was able to mount it !! Thank you all very much. Happy day :) root@mars:~/raid/bin/util# mdadm --assemble /dev/md/debian:0 --update=name -v /dev/sdb2 --run mdadm: looking for devices for /dev/md/debian:0 mdadm: /dev/sdb2 is identified as a member of /dev/md/debian:0, slot 1. mdadm: no uptodate device for slot 0 of /dev/md/debian:0 mdadm: added /dev/sdb2 to /dev/md/debian:0 as 1 mdadm: /dev/md/debian:0 has been started with 1 drive (out of 2). root@mars:~/raid/bin/util# mkdir /mnt/thanks root@mars:~/raid/bin/util# mount -o ro /dev/md/debian:0 /mnt/thanks root@mars:~/raid/bin/util# cd /mnt/thanks root@mars:/mnt/thanks# ls -l total 63900 drwxr-xr-x 19 root userme 4096 Nov 7.... :: :: :: ---------------- On Mon, 19 Jun 2017 06:59:18 +1000 NeilBrown <neilb@xxxxxxxx> wrote: > On Sun, Jun 18 2017, r23@xxxxxxxxxxxxxx wrote: > > > > root@mars:~/raid/bin# mdadm --misc --examine /dev/sdb2 > > /dev/sdb2: > > Magic : a92b4efc > > Version : 1.2 > > Feature Map : 0x1 > > Array UUID : 2a3489a6:b430c744:2c89a792:98521913 > > Name : debian:0 > > Creation Time : Sat May 9 17:44:25 2015 > > Raid Level : raid1 > > Raid Devices : 2 > > > > Avail Dev Size : 9765179392 (4656.40 GiB 4999.77 GB) > > Array Size : 4882589696 (4656.40 GiB 4999.77 GB) > > Data Offset : 262144 sectors > > Super Offset : 8 sectors > > Unused Space : before=262056 sectors, after=0 sectors > > State : clean > > Device UUID : 4697b088:5d3b1ae5:55d30f65:516df63d > > > > Internal Bitmap : 8 sectors from superblock > > Update Time : Wed Jun 14 23:53:27 2017 > > Bad Block Log : 512 entries available at offset 72 sectors > > Checksum : 1f245410 - expected 1f249410 > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > checksum is wrong. > > > root@mars:~/raid/bin/util/lsdrv# mdadm > > --assemble /dev/md/debian:0 -v /dev/sdb2 --run mdadm: looking for > > devices for /dev/md/debian:0 mdadm: /dev/sdb2 is identified as a > > member of /dev/md/debian:0, slot 1. mdadm: no uptodate device for > > slot 0 of /dev/md/debian:0 mdadm: failed to add /dev/sdb2 > > to /dev/md/debian:0: Invalid argument > > Bad checksum caused kernel to reject the device. > > There is no obvious way to correct the checksum, but I think you can > force it by using the --update option to --assemble > e.g. > > mdadm --assemble /dev/md/debian:0 --update=name -v /dev/sdb2 > > When doing that, you should check that other fields all look correct > first, because something must have changed to affect the bitmap. > (I cannot see anything that looks wrong) > > NeilBrown -- 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
