Thanks Sam for the logs.
In your config btrfs Kernel still knows the device as /dev/root.
not /dev/sda. looks like during boot up the device is /dev/root
and after boot up its /dev/sda. so is the problem all about. some
logs below to support that.
Unfortunately at my end I am not able to reproduce this on a virtual
box. I guess it would need a real bios. If you have any of that info
that will help.
when progs can't find the device in user space it would print missing.
That was introduced in patch 206efb60cbe3049e0d44c6da3c1909aeee18f813.
But the point to note is - though the actual device is same, its path
during boot up and after boot up are different in some standalone
systems.
scsi inquiry serial number provides an unique device id. But in btrfs
we are depend on our SB. which can copied across devices. OR there
might some un-wiped stale SB on the device. We need some new mechanism
to handle this.
From your system, /proc/self/mounts (the device path here
comes from the btrfs kernel, )
------
/dev/root / btrfs ...
::
/dev/root /home btrfs rw,noatime,compress=lzo,ssd,space_cache 0 0
-------
per mount cli
-----
/dev/sda2 on / type btrfs ...
::
/dev/sda2 on /home type btrfs ...
------
fstab
-----
UUID=..b31df / btrfs defaults,noatime,compress=lzo,subvolid=258
::
UUID=..b31df /home btrfs defaults,noatime,compress=lzo,subvolid=285
-------
Anand
On 17/09/2014 05:53, Anand Jain wrote:
Stefan,
Can you pls send me the output for
cat /etc/fstab | egrep btrfs
cat /proc/self/mounts | egrep btrfs
mount | egrep btrfs
Thanks, Anand
On 17/09/2014 05:08, Stefan G. Weichinger wrote:
Am 15.09.2014 um 19:42 schrieb Anand Jain:
Sam,
In the above context, Can you pls share the btrfs fi show output ?
unsure if it helps:
I applied the patch as well, running gentoo on latest git-sources here.
My "btrfs fi show" misses my SSD now:
# btrfs fi show
Label: 'btrfs_evo' uuid: ea95dbd1-ef4e-48a4-9732-54e6c80b31df
Total devices 1 FS bytes used 80.91GiB
*** Some devices missing
.. although all the btrfs-subvols on /dev/sda2 are mounted correctly and
everything works fine so far.
Stefan
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