Lacie 5Big2 Failed After Firmware Update

[Mijzelf]

No indeed. The sequence is wrong. This should fix it:

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rm /dev/sd*

mknod -m 666 /dev/sdc b 8 0
mknod -m 666 /dev/sdc2 b 8 2

mknod -m 666 /dev/sdb b 8 16
mknod -m 666 /dev/sdb2 b 8 18

mknod -m 666 /dev/sda b 8 32
mknod -m 666 /dev/sda2 b 8 34

mknod -m 666 /dev/sde b 8 48
mknod -m 666 /dev/sde2 b 8 50

mknod -m 666 /dev/sdd b 8 64
mknod -m 666 /dev/sdd2 b 8 66

And no, you don't need to unplug the usb disk.

[fvdw]

I have a static version of udevstart to correct the dev nodes in /dev
would this helpful ?

[Mijzelf]

Yes, it will prevent typo's, I suppose.

[fvdw]

I astached it
unpack it and put it in tftp directory
upload via tftp to /sbin and make it executable

when done execute in telnet

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udevstart

After this the nodes in /dev should be inline with /proc/partitions

[unlucky1]

That seemed to do the trick! Cool!

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root@(none):/mountpoint # cat /proc/partitions
major minor  #blocks  name

  31        0        500 mtdblock0
  31        1          4 mtdblock1
   8        0  976762584 sdc
   8        2  974737408 sdc2
   8       16  976762584 sdb
   8       18  974737408 sdb2
   8       32  976762584 sda
   8       34  974737408 sda2
   8       48  976762584 sde
   8       50  974737408 sde2
   8       64  976762584 sdd
   8       66  974737408 sdd2
   8       80 2930266580 sef
   8       81 2930253824 sef1


Next step? Rebuild the array? Is it safe too? (soooo nervous!)

[Mijzelf]

Next step? Rebuild the array? Is it safe too?

Yes. It *should* be safe. We are giving the array a new index, without touching the payload.

(soooo nervous!)

Yes, I understand.

/Edit: the tool from fvdw should have change /dev/sd*, and you showed /proc/partitions

[unlucky1]

How do I show /dev/sd* again? Was it this:

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root@(none):/mountpoint # ls -l /dev/sd*2
brw-rw----    1 root     root        8,  34 Jul 10 20:28 /dev/sda2
brw-rw----    1 root     root        8,  18 Jun  1 18:17 /dev/sdb2
brw-rw----    1 root     root        8,   2 Jul 10 20:28 /dev/sdc2
brw-rw----    1 root     root        8,  66 Jul 10 20:28 /dev/sdd2
brw-rw----    1 root     root        8,  50 Jul 10 20:28 /dev/sde2

[Mijzelf]

Yep. And the minors are OK.

[unlucky1]

Okay, here goes!!!!

[unlucky1]

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root@(none):/mountpoint # mdadm --create --assume-clean --metadata=1.0 --layout=left-symmetric --ch
unk=512K --level=raid5 --raid-devices=5 /dev/md0 /dev/sd[abcde]2
mdadm: raid level must be given before layout.