On Wed, Jul 31, 2013 at 9:36 PM, Francis Moreau <francis.moro@xxxxxxxxx> wrote:
> Hello Martin,
>
> I finally managed to get more information.
>
> After the resync finished I have the following state:
>
> partial content of /sys/block/md126/md:
> --------------------------------------
> array_size default
> array_state active
> chunk_size 65536
> component_size 975585280
> degraded 0
> layout 0
> level raid1
> max_read_errors 20
> metadata_version external:/md127/0
> mismatch_cnt 0
> raid_disks 2
> reshape_position none
> resync_start none
> safe_mode_delay 0.000
> suspend_hi 0
> suspend_lo 0
> sync_action idle
> sync_completed none
>
> # cat /proc/mdstat
> Personalities : [raid1]
> md126 : active raid1 sdb[1] sda[0]
> 975585280 blocks super external:/md127/0 [2/2] [UU]
>
> md127 : inactive sdb[1](S) sda[0](S)
> 2354608 blocks super external:ddf
>
> unused devices: <none>
>
> # mdadm -E /dev/sda | egrep "GUID|state"
> Controller GUID : 4C534920:20202020:FFFFFFFF:FFFFFFFF:FFFFFFFF:FFFFFFFF
> Container GUID : 4C534920:20202020:80861D6B:10140432:3F14FDAD:5271FC67
> VD GUID[0] : 4C534920:20202020:80861D60:00000000:3F2A56A7:00001450
> state[0] : Optimal, Not Consistent
> init state[0] : Fully Initialised
>
> Same for /dev/sdb
>
> As you noticed the state is "Not Consistent". In my understanding it
> becomes "Consistent" when the array is stopped.
>
> I checked during the shudown process that the array is correctly
> stopped since at that point I got:
>
> # mdadm -E /dev/sda | egrep "state"
> state[0] : Optimal, Consistent
> init state[0] : Fully Initialised
>
> After rebooting, it appears that the BIOS changed a part of VD
> GUID[0]. I'm not sure if that can confuse the kernel and if it's the
> reason why the kernel shows:
To be more accurate, I stopped during the initramfs execution before
udev is started, therefore I'm pretty sure that no mdadm commands have
been issued.
And at this point, the kernel message "md/raid1:md126: not clean --
starting background
reconstruction" has not been emitted and I can see this:
# mdadm -E /dev/sda | egrep "state"
state[0] : Optimal, Consistent
init state[0] : Not Initialised
So the "init state[0]" has been changed from "Initialised" to "Not Initialised".
How is this possible ?
Help much appreciated.
--
Francis
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