Hi, all.

Just built kernel 3.6.11 and when I tried to install it with lilo, I got
this difficult error message:

    Fatal: Trying to map files from unnamed device 0x0000 (NFS/RAID
    mirror down ?)

.  So I eventually had a look at dmesg for my raid setup, and found this
- note lines 15 - 19:

    [    2.148410] md: Waiting for all devices to be available before
     autodetect
    [    2.149891] md: If you don't use raid, use raid=noautodetect
    [    2.151546] md: Autodetecting RAID arrays.
    [    2.180356] md: Scanned 4 and added 4 devices.
    [    2.181819] md: autorun ...
    [    2.183244] md: considering sdb6 ...
    [    2.184666] md:  adding sdb6 ...
    [    2.186079] md: sdb3 has different UUID to sdb6
    [    2.187492] md:  adding sda6 ...
    [    2.188884] md: sda3 has different UUID to sdb6
    [    2.190484] md: created md6
    [    2.191883] md: bind<sda6>
    [    2.193224] md: bind<sdb6>
    [    2.194538] md: running: <sdb6><sda6>
15  [    2.195855] md: kicking non-fresh sda6 from array!
16  [    2.197154] md: unbind<sda6>
17  [    2.205840] md: export_rdev(sda6)
    [    2.207176] bio: create slab <bio-1> at 1
19  [    2.208520] md/raid1:md6: active with 1 out of 2 mirrors
    [    2.209835] md6: detected capacity change from 0 to 34359672832
    [    2.211187] md: considering sdb3 ...
    [    2.212444] md:  adding sdb3 ...
    [    2.213691] md:  adding sda3 ...
    [    2.215117] md: created md3
    [    2.216349] md: bind<sda3>
    [    2.217569] md: bind<sdb3>
    [    2.218765] md: running: <sdb3><sda3>
    [    2.220025] md/raid1:md3: active with 2 out of 2 mirrors
    [    2.221231] md3: detected capacity change from 0 to 429507543040
    [    2.222508] md: ... autorun DONE.
    [    2.230821]  md6: unknown partition table

.  Further perusal of a log file showed this error first happened on
2012-11-29.  It would appear /dev/md6 has been firing on one cylinder
ever since, and I've been unaware of this.  :-(

What does it mean for sda6 to be "non-fresh"?

/dev/md6 is my root partition (including /usr :-(), so I can't unmount
it for investigation.

Could somebody please suggest how I might go about repairing this
problem.

Thanks!

-- 
Alan Mackenzie (Nuremberg, Germany).

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