Re: 5.4.20: cannot mount device that blipped off the bus: duplicate device fsid:devid for

[Marc MERLIN <marc@merlins.org>]

Anaud, I had this happen agin with 5.5.11, and it was impossible to do
anything to fix it, I had to reboot again.
btrfs device scan --forget 
did nothing.

See details:
BTRFS: device label btrfs_space devid 1 transid 35178413 /dev/sde1
BTRFS info (device sde1): use lzo compression, level 0
BTRFS info (device sde1): disk space caching is enabled
BTRFS info (device sde1): has skinny extents
BTRFS info (device sde1): enabling ssd optimizations
sd 6:1:3:0: [sde] tag#642 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK cmd_age=2s  
sd 6:1:3:0: [sde] tag#640 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK cmd_age=2s
sd 6:1:3:0: [sde] tag#702 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK cmd_age=2s
sd 6:1:3:0: [sde] tag#702 CDB: Write(16) 8a 00 00 00 00 00 f1 a7 3a 68 00 00 01 f0 00 00  
blk_update_request: I/O error, dev sde, sector 4054268520 op 0x1:(WRITE) flags 0x100000 phys_seg 62 prio class 0
sd 6:1:3:0: [sde] tag#701 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK cmd_age=2s
sd 6:1:3:0: [sde] tag#701 CDB: Write(16) 8a 00 00 00 00 00 f1 a7 38 68 00 00 02 00 00 00  
blk_update_request: I/O error, dev sde, sector 4054268008 op 0x1:(WRITE) flags 0x104000 phys_seg 64 prio class 0
sd 6:1:3:0: [sde] tag#700 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK cmd_age=2s
sd 6:1:3:0: [sde] tag#700 CDB: Write(16) 8a 00 00 00 00 00 f1 a7 36 68 00 00 02 00 00 00  
blk_update_request: I/O error, dev sde, sector 4054267496 op 0x1:(WRITE) flags 0x104000 phys_seg 64 prio class 0
BTRFS error (device sde1): bdev /dev/sde1 errs: wr 1, rd 0, flush 0, corrupt 0, gen 0
sd 6:1:3:0: [sde] tag#641 FAILED Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK cmd_age=10s
sd 6:1:3:0: [sde] tag#641 CDB: Unmap/Read sub-channel 42 00 00 00 00 00 00 00 18 00  
BTRFS info (device sde1): forced readonly
BTRFS warning (device sde1): Skipping commit of aborted transaction.  
BTRFS: error (device sde1) in cleanup_transaction:1894: errno=-5 IO failure
BTRFS info (device sde1): delayed_refs has NO entry
btrfs_dev_stat_print_on_error: 244 callbacks suppressed


gargamel:~# dmtail 3
[1887142.765448] BTRFS error (device sde1): bdev /dev/sde1 errs: wr 1038, rd 4529, flush 0, corrupt 0, gen 0
[1887142.795820] BTRFS error (device sde1): bdev /dev/sde1 errs: wr 1038, rd 4530, flush 0, corrupt 0, gen 0
[1887142.826176] BTRFS error (device sde1): bdev /dev/sde1 errs: wr 1038, rd 4531, flush 0, corrupt 0, gen 0
gargamel:~# cat /proc/partitions  |grep sd[ep]
   8      240 3750738264 sdp
   8      241 3750737223 sdp1
gargamel:~# mount | grep sde
/dev/sde1 on /mnt/btrfs_space type btrfs (ro,noatime,compress=lzo,ssd,discard,space_cache,skip_balance,subvolid=5,subvol=/)
/dev/sde1 on /var/local/space type btrfs (ro,noexec,noatime,compress=lzo,ssd,discard,space_cache,skip_balance,subvolid=257,subvol=/varlocalspace)
/dev/sde1 on /var/cache/zoneminder type btrfs (ro,nosuid,nodev,noatime,compress=lzo,ssd,discard,space_cache,skip_balance,subvolid=257,subvol=/varlocalspace/zoneminder)
/dev/sde1 on /var/lib/mysql type btrfs (ro,nosuid,nodev,noatime,compress=lzo,ssd,discard,space_cache,skip_balance,subvolid=3648,subvol=/mysql)
gargamel:~# umount /mnt/btrfs_space; umount /var/local/space; umount /var/cache/zoneminder; umount /var/lib/mysql
gargamel:~# mount | grep sde

gargamel:~# mount /dev/sdp1 /mnt/mnt
mount: /mnt/mnt: mount(2) system call failed: File exists.
gargamel:~# dmtail 2
[1887142.826176] BTRFS error (device sde1): bdev /dev/sde1 errs: wr 1038, rd 4531, flush 0, corrupt 0, gen 0
[1887453.610947] BTRFS warning (device sde1): duplicate device fsid:devid for 727c7ba3-f6f9-462a-8472-453dd7d46d8a:1 old:/dev/sde1 new:/dev/sdp1

gargamel:/usr/local/bin# btrfs device scan --forget 
gargamel:/usr/local/bin# mount /dev/sdp1 /mnt/mnt
mount: /mnt/mnt: mount(2) system call failed: File exists.


After reboot, I made sure sde is not used by anything weird, just simple mounts:
gargamel:~# lsblk  | grep sde
sde                                 8:64   1 931.5G  0 disk  
├─sde1                              8:65   1 488.3M  0 part  
├─sde2                              8:66   1  14.9G  0 part  
├─sde3                              8:67   1    80G  0 part  
└─sde4                              8:68   1 836.1G  0 part 

Any ideas?

Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
 
Home page: http://marc.merlins.org/                       | PGP 7F55D5F27AAF9D08