Can't mount btrfs volume on rbd

[Steve Dainard <sdainard@xxxxxxxx>]

Hello,

I'm getting an error when attempting to mount a volume on a host that was forceably powered off:

# mount /dev/rbd4 climate-downscale-CMIP5/
mount: mount /dev/rbd4 on /mnt/climate-downscale-CMIP5 failed: Stale file handle

/var/log/messages:
Jun 10 15:31:07 node1 kernel: rbd4: unknown partition table

# parted /dev/rbd4 print
Model: Unknown (unknown)
Disk /dev/rbd4: 36.5TB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system  Flags
 1      0.00B  36.5TB  36.5TB  btrfs

# btrfs check --repair /dev/rbd4
enabling repair mode
Checking filesystem on /dev/rbd4
UUID: dfe6b0c8-2866-4318-abc2-e1e75c891a5e
checking extents
cmds-check.c:2274: check_owner_ref: Assertion `rec->is_root` failed.
btrfs[0x4175cc]
btrfs[0x41b873]
btrfs[0x41c3fe]
btrfs[0x41dc1d]
btrfs[0x406922]

OS: CentOS 7.1

btrfs-progs: 3.16.2

Ceph: version: 0.94.1/CentOS 7.1

I haven't found any references to 'stale file handle' on btrfs.

The underlying block device is ceph rbd, so I've posted to both lists for any feedback. Also once I reformatted btrfs I didn't get a mount error.

The btrfs volume has been reformatted so I won't be able to do much post mortem but I'm wondering if anyone has some insight.

Thanks,

Steve

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