On Fri 2015-08-14 (00:24), Anand Jain wrote:
> >> root@toy02:~# btrfs filesystem show
> >> Label: data uuid: 411af13f-6cae-4f03-99dc-5941acb3135b
> >> Total devices 2 FS bytes used 106.51GiB
> >> devid 3 size 1.82TiB used 82.03GiB path /dev/drbd2
> >> devid 4 size 1.82TiB used 82.03GiB path /dev/drbd3
> >
> > And now, after a reboot:
> >
> > root@toy02:~/bin# btrfs filesystem show
> > Label: data uuid: 411af13f-6cae-4f03-99dc-5941acb3135b
> > Total devices 2 FS bytes used 119.82GiB
> > devid 3 size 1.82TiB used 82.03GiB path /dev/drbd2
> > devid 4 size 1.82TiB used 82.03GiB path /dev/sde
> >
> > GRMPF!
>
> pls use 'btrfs fi show -m' and just ignore no option or -d if fs is
> mounted, as -m reads from the kernel.
There is now a new behaviour: after the btrfs mount, I can see shortly the
wrong raw device /dev/sde and a few seconds later there is the correct
/dev/drbd3 :
root@toy02:/etc# umount /data
root@toy02:/etc# mount /data
root@toy02:/etc# btrfs filesystem show
Label: data uuid: 411af13f-6cae-4f03-99dc-5941acb3135b
Total devices 2 FS bytes used 109.56GiB
devid 3 size 1.82TiB used 63.03GiB path /dev/drbd2
devid 4 size 1.82TiB used 63.03GiB path /dev/sde
Btrfs v3.12
root@toy02:/etc# btrfs filesystem show
Label: data uuid: 411af13f-6cae-4f03-99dc-5941acb3135b
Total devices 2 FS bytes used 109.56GiB
devid 3 size 1.82TiB used 63.03GiB path /dev/drbd2
devid 4 size 1.82TiB used 63.03GiB path /dev/drbd3
Btrfs v3.12
root@toy02:/etc# btrfs filesystem show -m
Label: data uuid: 411af13f-6cae-4f03-99dc-5941acb3135b
Total devices 2 FS bytes used 109.56GiB
devid 3 size 1.82TiB used 63.03GiB path /dev/drbd2
devid 4 size 1.82TiB used 63.03GiB path /dev/drbd3
Btrfs v3.12
Still, the kernel sees 3 instead of (really) 2 HGST drives:
root@toy02:/etc# hdparm -I /dev/sdb | grep Number:
Model Number: HGST HUS724020ALA640
Serial Number: PN2134P5G2P2AX
root@toy02:/etc# hdparm -I /dev/sde | grep Number:
Model Number: HGST HUS724020ALA640
Serial Number: PN2134P5G2P2AX
root@toy02:/etc# hdparm -I /dev/sdd | grep Number:
Model Number: HGST HUS724020ALA640
Serial Number: PN2134P5G2P2XX
--
Ullrich Horlacher Informationssysteme und Serverbetrieb
IZUS/TIK E-Mail: horlacher@xxxxxxxxxxxxxxxxxxxx
Universitaet Stuttgart Tel: ++49-711-68565868
Allmandring 30a Fax: ++49-711-682357
70550 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/
REF:<55CCC4AB.2080600@xxxxxxxxxx>
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