I often hit the following error when doing incremental btrfs send-receive:
Btrfs incremental send | receive fails with Error: File not found
Sometimes I can do two-three incremental snapshots, but then the same
error (different file) happens again. It seems that the files were
changed or replaced between snapshots, which is causing the problems for
send-receive. I have tried to delete all snapshots and started over but
the problem comes back, so I think it must be a bug.
The source volume is: /mnt/storagePool (with RAID1 profile)
with subvolume: volume/userData
Backup disk is: /media/usb-backup (external USB disk)
# cat /proc/version
Linux version 4.13.0-rc2 (root@e350) (gcc version 6.3.0 (Gentoo 6.3.0
p1.0)) #2 SMP PREEMPT Fri Jul 28 14:25:15 CEST 2017
# btrfs version
btrfs-progs v4.11.1
# btrfs fi show:
Label: 'Backup' uuid: f021a039-87d6-4498-a0f5-6bbba3dfb1f1
Total devices 1 FS bytes used 362.85GiB
devid 1 size 931.51GiB used 367.06GiB path /dev/sdf1
Label: 'pool' uuid: ea4f1d6d-c2c5-4247-a903-15b36ee276a7
Total devices 2 FS bytes used 362.33GiB
devid 1 size 927.51GiB used 367.03GiB path /dev/sdc2
devid 2 size 927.51GiB used 367.03GiB path /dev/sdd2
(backup) /media/usb-backup/volumes/userData # btrfs sub list .
ID 258 gen 30 top level 5 path scripts
ID 1622 gen 3227 top level 5 path volumes/userData/userData.20170727T1222
ID 1999 gen 3251 top level 5 path volumes/userData/userData.20170727T2102
(source) /mnt/storagePool/snapshots # btrfs sub list .
ID 262 gen 118703 top level 5 path volume/userData
ID 1928 gen 118105 top level 5 path snapshots/userData.20170727T1222
ID 1930 gen 118151 top level 5 path snapshots/userData.20170727T2102
ID 1932 gen 118167 top level 5 path snapshots/userData.20170727T2300
ID 1936 gen 118390 top level 5 path snapshots/userData.20170728T0100
ID 1939 gen 118502 top level 5 path snapshots/userData.20170728T0200
ID 1955 gen 118667 top level 5 path snapshots/userData.20170728T1300
ID 1960 gen 118695 top level 5 path snapshots/userData.20170728T1700
ID 1962 gen 118699 top level 5 path snapshots/userData.20170728T1800
# btrfs subvolume list -p -a -c -g -u -q -R -t /mnt/storagePool/snapshots
ID gen cgen parent top level parent_uuid
received_uuid uuid path
-- --- ---- ------ --------- -----------
------------- ---- ----
260 118702 24 5 5 -
6e20167e-8d72-cc42-b486-10c6a5516ca7
dd86162c-4df2-d646-a65f-77768adc132d volume/mail
262 118703 39 5 5 -
8464242d-0e81-e84e-ba93-78b1c8f00fc9
94c256cb-970e-e349-a660-ff4d9291c829 volume/userData
506 118691 333 5 5 -
d0c6ff24-1766-b049-abe9-80396795448f
c759b1cc-106e-134a-8cef-f1da1bc5e169 volume/storageTemp
1469 78671 78671 5 5 - -
8a94524e-a956-c14b-bb8d-d453627f27d5 volume/mysql
1928 118105 118105 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
7aed8444-34a7-c54d-ae06-e0e80ead3c18 snapshots/userData.20170727T1222
1930 118151 118151 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
20b4fab3-f75c-4445-914a-23465e09626c snapshots/userData.20170727T2102
1932 118167 118167 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
2b0069dc-5d71-df49-9c32-d5e0f17c09e9 snapshots/userData.20170727T2300
1936 118390 118390 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
8aa3ea70-b703-b740-8012-373be0616720 snapshots/userData.20170728T0100
1939 118502 118502 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
ad84276f-a481-d04a-ad26-301dd79b158f snapshots/userData.20170728T0200
1955 118667 118667 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
605cf43c-5e01-9d4e-ad22-77488f0d3e90 snapshots/userData.20170728T1300
1960 118695 118695 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
31c72ce0-5765-b042-a073-8c4296e111ec snapshots/userData.20170728T1700
1962 118699 118699 5 5 94c256cb-970e-e349-a660-ff4d9291c829
8464242d-0e81-e84e-ba93-78b1c8f00fc9
feadb1df-867b-7245-86d0-5472cd3c899b snapshots/userData.20170728T1800
# btrfs subvolume list -p -a -c -g -u -q -R -t
/media/usb-backup/volumes/userData
ID gen cgen parent top level parent_uuid
received_uuid uuid path
-- --- ---- ------ --------- -----------
------------- ---- ----
258 30 9 5 5 - -
95dafde0-677c-7542-9d18-9bbfdbf7c9b3 scripts
1622 3227 2532 5 5 -
8464242d-0e81-e84e-ba93-78b1c8f00fc9
cfe52e52-b7dd-7e48-8616-43286f5a11e0 volumes/userData/userData.20170727T1222
1999 3251 3224 5 5 cfe52e52-b7dd-7e48-8616-43286f5a11e0
8464242d-0e81-e84e-ba93-78b1c8f00fc9
c2625b3d-7d3f-fa48-9c73-3d67209bf3f8 volumes/userData/userData.20170727T2102
###
### Running the incremental send, using an existing snapshot as parent.
###
# btrfs send -p /mnt/storagePool/snapshots/userData.20170727T2102
/mnt/storagePool/snapshots/userData.20170727T2300 | btrfs receive
/media/usb-backup/volumes/userData/
At subvol /mnt/storagePool/snapshots/userData.20170727T2300
At snapshot userData.20170727T2300
ERROR: unlink Documents/Art & Craft/Scrapbook-Journal/FAR FAR
HILL/Paper/000_29082014_w.zip failed. No such file or directory
There are no kernel errors in dmesg. The file was changed between
snapshots from a Windows client. The volume 'userData' is shared by Samba.
# ls -l
-rw-rwx---+ 1 user user 112643654 Jul 27 17:46
'/mnt/storagePool/snapshots/userData.20170727T2102/Documents/Art &
Craft/Scrapbook-Journal/FAR FAR HILL/Paper/000_29082014_w.zip'
-rw-rw---- 1 user user 88269510 Jul 27 22:28
'/mnt/storagePool/snapshots/userData.20170727T2300/Documents/Art &
Craft/Scrapbook-Journal/FAR FAR HILL/Paper/000_29082014_w.zip'
-rw-rwx---+ 1 user user 112643654 Jul 27 17:46
'/media/usb-backup/volumes/userData/userData.20170727T2102/Documents/Art
& Craft/Scrapbook-Journal/FAR FAR HILL/Paper/000_29082014_w.zip'
# getfattr -d -m ".*"
file: mnt/storagePool/snapshots/userData.20170727T2102/Documents/Art &
Craft/Scrapbook-Journal/FAR FAR HILL/Paper/000_29082014_w.zip
system.posix_acl_access=0sAgAAAAEABgD/////AgAGAOgDAAAEAAYA/////wgABgDoAwAAEAAHAP////8gAAAA/////w==
user.DOSATTRIB=0sMHgyMAAAAwADAAAAEQAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAALb7FertBtMBAAAAAAAAAAA=
file: mnt/storagePool/snapshots/userData.20170727T2300/Documents/Art &
Craft/Scrapbook-Journal/FAR FAR HILL/Paper/000_29082014_w.zip
user.DOSATTRIB=0sMHgyMAAAAwADAAAAEQAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGbb2O8WB9MBAAAAAAAAAAA=
file:
media/usb-backup/volumes/userData/userData.20170727T2102/Documents/Art &
Craft/Scrapbook-Journal/FAR FAR HILL/Paper/000_29082014_w.zip
system.posix_acl_access=0sAgAAAAEABgD/////AgAGAOgDAAAEAAYA/////wgABgDoAwAAEAAHAP////8gAAAA/////w==
user.DOSATTRIB=0sMHgyMAAAAwADAAAAEQAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAALb7FertBtMBAAAAAAAAAAA=
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