Riccardo Murri
2018-Jul-18 10:28 UTC
[Gluster-users] Cannot list `.snaps/<snapname>` directory
Hello,
I am trying the USS snapshots on an existing cluster (GlusterFS 3.12.9
on Ubuntu 16.04, installed from the DEB packages on GlusterFS.org).
I can successfully create a snapshot, and it is correctly listed under
the volume's `.snaps` directory everywhere; for example:
$ stat .snaps/test_GMT-2018.07.18-10.02.05
File: '.snaps/test_GMT-2018.07.18-10.02.05'
Size: 4096 Blocks: 8 IO Block: 131072 directory
Device: 2bh/43d Inode: 11895042009497816687 Links: 6
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2018-07-16 13:33:29.649519330 +0000
Modify: 2018-07-16 13:33:29.548396587 +0000
Change: 2018-07-16 13:33:29.645519332 +0000
Birth: -
However running:
ls .snaps/test_GMT-2018.07.18-10.02.05/
just hangs forever. Running the same command under `strace` shows
that it's stuck repeatedly just doing this `getdents system call::
getdents(3, [{d_ino=15424314298293051273,
d_off=9223372036854775805, d_reclen=32, d_name="modulefiles",
d_type=DT_DIR}, {d_ino=1, d_off=7346686173273481909, d_reclen=24,
d_name="..", d_type=DT_DIR}, {d_ino=13594788684206387598,
d_off=7356868894832018317, d_reclen=24, d_name=".", d_type=DT_DIR},
{d_ino=9350865815378619609, d_off=9223372036854775805, d_reclen=24,
d_name="bin", d_type=DT_DIR}], 131072) = 104
Looking in the server-side logs shows no issue (I am attaching the
last lines of logs and other config commands below).
What could be the problem here?
Thanks,
Riccardo
(Note for the logs: snap was created at 10:02 UTC.)
$ tail glusterd.log bricks/run-gluster-snaps*log snaps/glusterfs/snapd.log
[2018-07-18 10:02:07.183666] I
[glusterd-utils.c:6047:glusterd_brick_start] 0-management: starting a
fresh brick process for brick
/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
[2018-07-18 10:02:07.194801] I
[rpc-clnt.c:1044:rpc_clnt_connection_init] 0-management: setting
frame-timeout to 600
[2018-07-18 10:02:07.296262] I [socket.c:2474:socket_event_handler]
0-transport: EPOLLERR - disconnecting now
[2018-07-18 10:02:07.297582] I [MSGID: 106005]
[glusterd-handler.c:6071:__glusterd_brick_rpc_notify] 0-management:
Brick
glusterfs-server-001:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
has disconnected from glusterd.
[2018-07-18 10:02:07.298327] W [MSGID: 106057]
[glusterd-snapshot-utils.c:410:glusterd_snap_volinfo_find]
0-management: Snap volume
2bd07d5165de4277be94d3bc2b4a6ff4.glusterfs-server-001.run-gluster-snaps-2bd07d5165de4277be94d3bc2b4a6ff4-brick4
not found [Invalid argument]
[2018-07-18 10:02:07.587928] I [MSGID: 106143]
[glusterd-pmap.c:295:pmap_registry_bind] 0-pmap: adding brick
/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4 on port
49154
==> bricks/run-gluster-snaps-2bd07d5165de4277be94d3bc2b4a6ff4-brick4.log
<=166: option transport.socket.keepalive-interval 2
167: option transport.socket.keepalive-count 9
168: option transport.listen-backlog 10
169: subvolumes /run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
170: end-volume
171:
+------------------------------------------------------------------------------+
[2018-07-18 10:02:50.156027] I [addr.c:55:compare_addr_and_update]
0-/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4: allowed
= "*", received addr = "172.23.62.200"
[2018-07-18 10:02:50.156366] I [login.c:111:gf_auth] 0-auth/login:
allowed user names: f75e457a-7898-4863-9754-2209ddf47573
[2018-07-18 10:02:50.156402] I [MSGID: 115029]
[server-handshake.c:793:server_setvolume]
0-2bd07d5165de4277be94d3bc2b4a6ff4-server: accepted client from
glusterfs-server-005-16843-2018/07/18-10:02:50:142015-glusterfs-client-12-0-0
(version: 3.12.9)
==> snaps/glusterfs/snapd.log <=[2018-07-18 08:27:43.710242] I
[addr.c:55:compare_addr_and_update]
0-snapd-glusterfs: allowed = "*", received addr =
"172.23.62.189"
[2018-07-18 08:27:43.710291] I [MSGID: 115029]
[server-handshake.c:793:server_setvolume] 0-glusterfs-server: accepted
client from
slurm-master-001-28933-2018/06/11-14:28:30:530655-glusterfs-snapd-client-45-0
(version: 3.12.9)
[2018-07-18 08:27:43.713616] E
[server-handshake.c:385:server_first_lookup] 0-snapd-glusterfs: lookup
on root failed: Success
[2018-07-18 08:27:43.729767] I [addr.c:55:compare_addr_and_update]
0-snapd-glusterfs: allowed = "*", received addr =
"172.23.62.189"
[2018-07-18 08:27:43.729809] I [MSGID: 115029]
[server-handshake.c:793:server_setvolume] 0-glusterfs-server: accepted
client from
slurm-master-001-9204-2018/07/10-12:11:24:974712-glusterfs-snapd-client-18-0
(version: 3.12.9)
[2018-07-18 08:27:43.730260] E
[server-handshake.c:385:server_first_lookup] 0-snapd-glusterfs: lookup
on root failed: Success
[2018-07-18 08:28:49.401381] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
[2018-07-18 09:57:29.838877] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
[2018-07-18 09:58:28.026000] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
[2018-07-18 10:02:11.611279] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
$ pdsh -g glusterfs_server 'sudo lvs' | dshbak -c
----------------
glusterfs-server-001
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 32.30
glusterfs data twi-aot--- 4.88t
26.48 13.65
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
32.30
----------------
glusterfs-server-002
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 32.28
glusterfs data twi-aot--- 4.88t
26.46 13.66
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
32.28
----------------
glusterfs-server-003
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 57.46
glusterfs data twi-aot--- 4.88t
47.10 23.88
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
57.46
----------------
glusterfs-server-004
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 46.72
glusterfs data twi-aot--- 4.88t
38.30 19.53
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
46.72
----------------
glusterfs-server-005
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 65.51
glusterfs data twi---t--- 4.88t
53.70 27.20
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
65.51
$ sudo gluster peer status
Number of Peers: 4
Hostname: glusterfs-server-005
Uuid: d53398f6-19d4-4633-8bc3-e493dac41789
State: Peer in Cluster (Connected)
Hostname: glusterfs-server-004
Uuid: 9a5763d2-1941-4e5d-8d33-8d6756f7f318
State: Peer in Cluster (Connected)
Hostname: glusterfs-server-003
Uuid: 3c74d2b4-a4f3-42d4-9511-f6174b0a641d
State: Peer in Cluster (Connected)
Hostname: glusterfs-server-002
Uuid: 5951cff1-2155-40b0-a94f-84ff2e4aa7c6
State: Peer in Cluster (Connected)
$ sudo gluster volume status
Status of volume: glusterfs
Gluster process TCP Port RDMA Port Online Pid
------------------------------------------------------------------------------
Brick glusterfs-server-005:/s
rv/glusterfs 49152 0 Y 12007
Brick glusterfs-server-004:/s
rv/glusterfs 49152 0 Y 14713
Brick glusterfs-server-003:/s
rv/glusterfs 49152 0 Y 14993
Brick glusterfs-server-001:/s
rv/glusterfs 49152 0 Y 20735
Brick glusterfs-server-002:/s
rv/glusterfs 49152 0 Y 19967
Snapshot Daemon on localhost 49153 0 Y 28323
Snapshot Daemon on glusterfs-
server-004 49153 0 Y 21229
Snapshot Daemon on glusterfs-
server-005 49153 0 Y 16843
Snapshot Daemon on glusterfs-
server-003 49153 0 Y 20673
Snapshot Daemon on glusterfs-
server-002 49153 0 Y 21441
Task Status of Volume glusterfs
------------------------------------------------------------------------------
Task : Rebalance
ID : 0eaf6ad1-df95-48f4-b941-17488010ddcc
Status : completed
$ sudo gluster snapshot status
Snap Name : test_GMT-2018.07.18-10.02.05
Snap UUID : 1b63ce46-334d-4faf-9081-a5b68d415786
Brick Path :
glusterfs-server-005:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick1
Volume Group : data
Brick Running : Yes
Brick PID : 17074
Data Percentage : 65.51
LV Size : 4.00t
Brick Path :
glusterfs-server-004:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick2
Volume Group : data
Brick Running : Yes
Brick PID : 21452
Data Percentage : 46.72
LV Size : 4.00t
Brick Path :
glusterfs-server-003:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick3
Volume Group : data
Brick Running : Yes
Brick PID : 20881
Data Percentage : 57.46
LV Size : 4.00t
Brick Path :
glusterfs-server-001:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
Volume Group : data
Brick Running : Yes
Brick PID : 28925
Data Percentage : 32.30
LV Size : 4.00t
Brick Path :
glusterfs-server-002:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick5
Volume Group : data
Brick Running : Yes
Brick PID : 21746
Data Percentage : 32.28
LV Size : 4.00t
Rafi Kavungal Chundattu Parambil
2018-Jul-19 12:55 UTC
[Gluster-users] Cannot list `.snaps/<snapname>` directory
Can you try mounting snapshot just like we mount a regular volume?
syntax mount -t glusterfs host1:/snaps/<snap name>/<volname>
<mount point>
Regards
Rafi KC
----- Original Message -----
From: "Riccardo Murri" <riccardo.murri at gmail.com>
To: gluster-users at gluster.org
Sent: Wednesday, July 18, 2018 3:58:34 PM
Subject: [Gluster-users] Cannot list `.snaps/<snapname>` directory
Hello,
I am trying the USS snapshots on an existing cluster (GlusterFS 3.12.9
on Ubuntu 16.04, installed from the DEB packages on GlusterFS.org).
I can successfully create a snapshot, and it is correctly listed under
the volume's `.snaps` directory everywhere; for example:
$ stat .snaps/test_GMT-2018.07.18-10.02.05
File: '.snaps/test_GMT-2018.07.18-10.02.05'
Size: 4096 Blocks: 8 IO Block: 131072 directory
Device: 2bh/43d Inode: 11895042009497816687 Links: 6
Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2018-07-16 13:33:29.649519330 +0000
Modify: 2018-07-16 13:33:29.548396587 +0000
Change: 2018-07-16 13:33:29.645519332 +0000
Birth: -
However running:
ls .snaps/test_GMT-2018.07.18-10.02.05/
just hangs forever. Running the same command under `strace` shows
that it's stuck repeatedly just doing this `getdents system call::
getdents(3, [{d_ino=15424314298293051273,
d_off=9223372036854775805, d_reclen=32, d_name="modulefiles",
d_type=DT_DIR}, {d_ino=1, d_off=7346686173273481909, d_reclen=24,
d_name="..", d_type=DT_DIR}, {d_ino=13594788684206387598,
d_off=7356868894832018317, d_reclen=24, d_name=".", d_type=DT_DIR},
{d_ino=9350865815378619609, d_off=9223372036854775805, d_reclen=24,
d_name="bin", d_type=DT_DIR}], 131072) = 104
Looking in the server-side logs shows no issue (I am attaching the
last lines of logs and other config commands below).
What could be the problem here?
Thanks,
Riccardo
(Note for the logs: snap was created at 10:02 UTC.)
$ tail glusterd.log bricks/run-gluster-snaps*log snaps/glusterfs/snapd.log
[2018-07-18 10:02:07.183666] I
[glusterd-utils.c:6047:glusterd_brick_start] 0-management: starting a
fresh brick process for brick
/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
[2018-07-18 10:02:07.194801] I
[rpc-clnt.c:1044:rpc_clnt_connection_init] 0-management: setting
frame-timeout to 600
[2018-07-18 10:02:07.296262] I [socket.c:2474:socket_event_handler]
0-transport: EPOLLERR - disconnecting now
[2018-07-18 10:02:07.297582] I [MSGID: 106005]
[glusterd-handler.c:6071:__glusterd_brick_rpc_notify] 0-management:
Brick
glusterfs-server-001:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
has disconnected from glusterd.
[2018-07-18 10:02:07.298327] W [MSGID: 106057]
[glusterd-snapshot-utils.c:410:glusterd_snap_volinfo_find]
0-management: Snap volume
2bd07d5165de4277be94d3bc2b4a6ff4.glusterfs-server-001.run-gluster-snaps-2bd07d5165de4277be94d3bc2b4a6ff4-brick4
not found [Invalid argument]
[2018-07-18 10:02:07.587928] I [MSGID: 106143]
[glusterd-pmap.c:295:pmap_registry_bind] 0-pmap: adding brick
/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4 on port
49154
==> bricks/run-gluster-snaps-2bd07d5165de4277be94d3bc2b4a6ff4-brick4.log
<=166: option transport.socket.keepalive-interval 2
167: option transport.socket.keepalive-count 9
168: option transport.listen-backlog 10
169: subvolumes /run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
170: end-volume
171:
+------------------------------------------------------------------------------+
[2018-07-18 10:02:50.156027] I [addr.c:55:compare_addr_and_update]
0-/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4: allowed
= "*", received addr = "172.23.62.200"
[2018-07-18 10:02:50.156366] I [login.c:111:gf_auth] 0-auth/login:
allowed user names: f75e457a-7898-4863-9754-2209ddf47573
[2018-07-18 10:02:50.156402] I [MSGID: 115029]
[server-handshake.c:793:server_setvolume]
0-2bd07d5165de4277be94d3bc2b4a6ff4-server: accepted client from
glusterfs-server-005-16843-2018/07/18-10:02:50:142015-glusterfs-client-12-0-0
(version: 3.12.9)
==> snaps/glusterfs/snapd.log <=[2018-07-18 08:27:43.710242] I
[addr.c:55:compare_addr_and_update]
0-snapd-glusterfs: allowed = "*", received addr =
"172.23.62.189"
[2018-07-18 08:27:43.710291] I [MSGID: 115029]
[server-handshake.c:793:server_setvolume] 0-glusterfs-server: accepted
client from
slurm-master-001-28933-2018/06/11-14:28:30:530655-glusterfs-snapd-client-45-0
(version: 3.12.9)
[2018-07-18 08:27:43.713616] E
[server-handshake.c:385:server_first_lookup] 0-snapd-glusterfs: lookup
on root failed: Success
[2018-07-18 08:27:43.729767] I [addr.c:55:compare_addr_and_update]
0-snapd-glusterfs: allowed = "*", received addr =
"172.23.62.189"
[2018-07-18 08:27:43.729809] I [MSGID: 115029]
[server-handshake.c:793:server_setvolume] 0-glusterfs-server: accepted
client from
slurm-master-001-9204-2018/07/10-12:11:24:974712-glusterfs-snapd-client-18-0
(version: 3.12.9)
[2018-07-18 08:27:43.730260] E
[server-handshake.c:385:server_first_lookup] 0-snapd-glusterfs: lookup
on root failed: Success
[2018-07-18 08:28:49.401381] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
[2018-07-18 09:57:29.838877] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
[2018-07-18 09:58:28.026000] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
[2018-07-18 10:02:11.611279] I
[snapview-server-mgmt.c:22:mgmt_cbk_snap] 0-mgmt: list of snapshots
changed
$ pdsh -g glusterfs_server 'sudo lvs' | dshbak -c
----------------
glusterfs-server-001
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 32.30
glusterfs data twi-aot--- 4.88t
26.48 13.65
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
32.30
----------------
glusterfs-server-002
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 32.28
glusterfs data twi-aot--- 4.88t
26.46 13.66
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
32.28
----------------
glusterfs-server-003
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 57.46
glusterfs data twi-aot--- 4.88t
47.10 23.88
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
57.46
----------------
glusterfs-server-004
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 46.72
glusterfs data twi-aot--- 4.88t
38.30 19.53
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
46.72
----------------
glusterfs-server-005
----------------
LV VG Attr LSize Pool
Origin Data% Meta% Move Log Cpy%Sync Convert
2bd07d5165de4277be94d3bc2b4a6ff4_0 data Vwi-aot--- 4.00t glusterfs
srv_glusterfs 65.51
glusterfs data twi---t--- 4.88t
53.70 27.20
srv_glusterfs data Vwi-aot--- 4.00t glusterfs
65.51
$ sudo gluster peer status
Number of Peers: 4
Hostname: glusterfs-server-005
Uuid: d53398f6-19d4-4633-8bc3-e493dac41789
State: Peer in Cluster (Connected)
Hostname: glusterfs-server-004
Uuid: 9a5763d2-1941-4e5d-8d33-8d6756f7f318
State: Peer in Cluster (Connected)
Hostname: glusterfs-server-003
Uuid: 3c74d2b4-a4f3-42d4-9511-f6174b0a641d
State: Peer in Cluster (Connected)
Hostname: glusterfs-server-002
Uuid: 5951cff1-2155-40b0-a94f-84ff2e4aa7c6
State: Peer in Cluster (Connected)
$ sudo gluster volume status
Status of volume: glusterfs
Gluster process TCP Port RDMA Port Online Pid
------------------------------------------------------------------------------
Brick glusterfs-server-005:/s
rv/glusterfs 49152 0 Y 12007
Brick glusterfs-server-004:/s
rv/glusterfs 49152 0 Y 14713
Brick glusterfs-server-003:/s
rv/glusterfs 49152 0 Y 14993
Brick glusterfs-server-001:/s
rv/glusterfs 49152 0 Y 20735
Brick glusterfs-server-002:/s
rv/glusterfs 49152 0 Y 19967
Snapshot Daemon on localhost 49153 0 Y 28323
Snapshot Daemon on glusterfs-
server-004 49153 0 Y 21229
Snapshot Daemon on glusterfs-
server-005 49153 0 Y 16843
Snapshot Daemon on glusterfs-
server-003 49153 0 Y 20673
Snapshot Daemon on glusterfs-
server-002 49153 0 Y 21441
Task Status of Volume glusterfs
------------------------------------------------------------------------------
Task : Rebalance
ID : 0eaf6ad1-df95-48f4-b941-17488010ddcc
Status : completed
$ sudo gluster snapshot status
Snap Name : test_GMT-2018.07.18-10.02.05
Snap UUID : 1b63ce46-334d-4faf-9081-a5b68d415786
Brick Path :
glusterfs-server-005:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick1
Volume Group : data
Brick Running : Yes
Brick PID : 17074
Data Percentage : 65.51
LV Size : 4.00t
Brick Path :
glusterfs-server-004:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick2
Volume Group : data
Brick Running : Yes
Brick PID : 21452
Data Percentage : 46.72
LV Size : 4.00t
Brick Path :
glusterfs-server-003:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick3
Volume Group : data
Brick Running : Yes
Brick PID : 20881
Data Percentage : 57.46
LV Size : 4.00t
Brick Path :
glusterfs-server-001:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick4
Volume Group : data
Brick Running : Yes
Brick PID : 28925
Data Percentage : 32.30
LV Size : 4.00t
Brick Path :
glusterfs-server-002:/run/gluster/snaps/2bd07d5165de4277be94d3bc2b4a6ff4/brick5
Volume Group : data
Brick Running : Yes
Brick PID : 21746
Data Percentage : 32.28
LV Size : 4.00t
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