I attached osd & fs dumps. There are two pools (cephfs_data,
cephfs_metadata) for CephFS clearly. And this system's network is 40Gbps
ethernet for public & cluster. So I don't think the network speed would be
problem. Thank you.
2018년 10월 16일 (화) 오전 1:18, John Spray <[email protected]>님이 작성:
> On Mon, Oct 15, 2018 at 4:24 PM Kisik Jeong <[email protected]>
> wrote:
> >
> > Thank you for your reply, John.
> >
> > I restarted my Ceph cluster and captured the mds logs.
> >
> > I found that mds shows slow request because some OSDs are laggy.
> >
> > I followed the ceph mds troubleshooting with 'mds slow request', but
> there is no operation in flight:
> >
> > root@hpc1:~/iodc# ceph daemon mds.hpc1 dump_ops_in_flight
> > {
> > "ops": [],
> > "num_ops": 0
> > }
> >
> > Is there any other reason that mds shows slow request? Thank you.
>
> Those stuck requests seem to be stuck because they're targeting pools
> that don't exist. Has something strange happened in the history of
> this cluster that might have left a filesystem referencing pools that
> no longer exist? Ceph is not supposed to permit removal of pools in
> use by CephFS, but perhaps something went wrong.
>
> Check out the "ceph osd dump --format=json-pretty" and "ceph fs dump
> --format=json-pretty" outputs and how the pool ID's relate. According
> to those logs, data pool with ID 1 and metadata pool with ID 2 do not
> exist.
>
> John
>
> > -Kisik
> >
> > 2018년 10월 15일 (월) 오후 11:43, John Spray <[email protected]>님이 작성:
> >>
> >> On Mon, Oct 15, 2018 at 3:34 PM Kisik Jeong <[email protected]>
> wrote:
> >> >
> >> > Hello,
> >> >
> >> > I successfully deployed Ceph cluster with 16 OSDs and created CephFS
> before.
> >> > But after rebooting due to mds slow request problem, when creating
> CephFS, Ceph mds goes creating status and never changes.
> >> > Seeing Ceph status, there is no other problem I think. Here is 'ceph
> -s' result:
> >>
> >> That's pretty strange. Usually if an MDS is stuck in "creating", it's
> >> because an OSD operation is stuck, but in your case all your PGs are
> >> healthy.
> >>
> >> I would suggest setting "debug mds=20" and "debug objecter=10" on your
> >> MDS, restarting it and capturing those logs so that we can see where
> >> it got stuck.
> >>
> >> John
> >>
> >> > csl@hpc1:~$ ceph -s
> >> > cluster:
> >> > id: 1a32c483-cb2e-4ab3-ac60-02966a8fd327
> >> > health: HEALTH_OK
> >> >
> >> > services:
> >> > mon: 1 daemons, quorum hpc1
> >> > mgr: hpc1(active)
> >> > mds: cephfs-1/1/1 up {0=hpc1=up:creating}
> >> > osd: 16 osds: 16 up, 16 in
> >> >
> >> > data:
> >> > pools: 2 pools, 640 pgs
> >> > objects: 7 objects, 124B
> >> > usage: 34.3GiB used, 116TiB / 116TiB avail
> >> > pgs: 640 active+clean
> >> >
> >> > However, CephFS still works in case of 8 OSDs.
> >> >
> >> > If there is any doubt of this phenomenon, please let me know. Thank
> you.
> >> >
> >> > PS. I attached my ceph.conf contents:
> >> >
> >> > [global]
> >> > fsid = 1a32c483-cb2e-4ab3-ac60-02966a8fd327
> >> > mon_initial_members = hpc1
> >> > mon_host = 192.168.40.10
> >> > auth_cluster_required = cephx
> >> > auth_service_required = cephx
> >> > auth_client_required = cephx
> >> >
> >> > public_network = 192.168.40.0/24
> >> > cluster_network = 192.168.40.0/24
> >> >
> >> > [osd]
> >> > osd journal size = 1024
> >> > osd max object name len = 256
> >> > osd max object namespace len = 64
> >> > osd mount options f2fs = active_logs=2
> >> >
> >> > [osd.0]
> >> > host = hpc9
> >> > public_addr = 192.168.40.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.1]
> >> > host = hpc10
> >> > public_addr = 192.168.40.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > [osd.2]
> >> > host = hpc9
> >> > public_addr = 192.168.40.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.3]
> >> > host = hpc10
> >> > public_addr = 192.168.40.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > [osd.4]
> >> > host = hpc9
> >> > public_addr = 192.168.40.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.5]
> >> > host = hpc10
> >> > public_addr = 192.168.40.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > [osd.6]
> >> > host = hpc9
> >> > public_addr = 192.168.40.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.7]
> >> > host = hpc10
> >> > public_addr = 192.168.40.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > [osd.8]
> >> > host = hpc9
> >> > public_addr = 192.168.40.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.9]
> >> > host = hpc10
> >> > public_addr = 192.168.40.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > [osd.10]
> >> > host = hpc9
> >> > public_addr = 192.168.10.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.11]
> >> > host = hpc10
> >> > public_addr = 192.168.10.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > [osd.12]
> >> > host = hpc9
> >> > public_addr = 192.168.10.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.13]
> >> > host = hpc10
> >> > public_addr = 192.168.10.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > [osd.14]
> >> > host = hpc9
> >> > public_addr = 192.168.10.18
> >> > cluster_addr = 192.168.40.18
> >> >
> >> > [osd.15]
> >> > host = hpc10
> >> > public_addr = 192.168.10.19
> >> > cluster_addr = 192.168.40.19
> >> >
> >> > --
> >> > Kisik Jeong
> >> > Ph.D. Student
> >> > Computer Systems Laboratory
> >> > Sungkyunkwan University
> >> > _______________________________________________
> >> > ceph-users mailing list
> >> > [email protected]
> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> >
> >
> >
> > --
> > Kisik Jeong
> > Ph.D. Student
> > Computer Systems Laboratory
> > Sungkyunkwan University
>
--
Kisik Jeong
Ph.D. Student
Computer Systems Laboratory
Sungkyunkwan University
csl@hpc1:~/iodc$ ceph fs dump --format=json-pretty
dumped fsmap epoch 7
{
"epoch": 7,
"compat": {
"compat": {},
"ro_compat": {},
"incompat": {
"feature_1": "base v0.20",
"feature_2": "client writeable ranges",
"feature_3": "default file layouts on dirs",
"feature_4": "dir inode in separate object",
"feature_5": "mds uses versioned encoding",
"feature_6": "dirfrag is stored in omap",
"feature_8": "no anchor table",
"feature_9": "file layout v2"
}
},
"feature_flags": {
"enable_multiple": false,
"ever_enabled_multiple": false
},
"standbys": [],
"filesystems": [
{
"mdsmap": {
"epoch": 7,
"flags": 12,
"ever_allowed_features": 0,
"explicitly_allowed_features": 0,
"created": "2018-10-15 23:59:41.928648",
"modified": "2018-10-16 03:04:34.836401",
"tableserver": 0,
"root": 0,
"session_timeout": 60,
"session_autoclose": 300,
"max_file_size": 1099511627776,
"last_failure": 0,
"last_failure_osd_epoch": 78,
"compat": {
"compat": {},
"ro_compat": {},
"incompat": {
"feature_1": "base v0.20",
"feature_2": "client writeable ranges",
"feature_3": "default file layouts on dirs",
"feature_4": "dir inode in separate object",
"feature_5": "mds uses versioned encoding",
"feature_6": "dirfrag is stored in omap",
"feature_8": "no anchor table",
"feature_9": "file layout v2"
}
},
"max_mds": 1,
"in": [
0
],
"up": {
"mds_0": 4203
},
"failed": [],
"damaged": [],
"stopped": [],
"info": {
"gid_4203": {
"gid": 4203,
"name": "hpc1",
"rank": 0,
"incarnation": 7,
"state": "up:creating",
"state_seq": 2,
"addr": "192.168.40.10:6801/550609",
"standby_for_rank": -1,
"standby_for_fscid": -1,
"standby_for_name": "",
"standby_replay": false,
"export_targets": [],
"features": 4611087853745930235
}
},
"data_pools": [
1
],
"metadata_pool": 2,
"enabled": true,
"fs_name": "cephfs",
"balancer": "",
"standby_count_wanted": 0
},
"id": 1
}
]
}
csl@hpc1:~/iodc$ ceph osd dump --format=json-pretty
{
"epoch": 78,
"fsid": "66b24069-fb7e-4842-9ff5-8f87f4ba0751",
"created": "2018-10-15 23:50:51.883303",
"modified": "2018-10-16 00:25:25.475329",
"flags": "sortbitwise,recovery_deletes,purged_snapdirs",
"crush_version": 33,
"full_ratio": 0.950000,
"backfillfull_ratio": 0.900000,
"nearfull_ratio": 0.850000,
"cluster_snapshot": "",
"pool_max": 2,
"max_osd": 16,
"require_min_compat_client": "jewel",
"min_compat_client": "jewel",
"require_osd_release": "luminous",
"pools": [
{
"pool": 1,
"pool_name": "cephfs_data",
"flags": 1,
"flags_names": "hashpspool",
"type": 1,
"size": 1,
"min_size": 1,
"crush_rule": 0,
"object_hash": 2,
"pg_num": 512,
"pg_placement_num": 512,
"crash_replay_interval": 0,
"last_change": "77",
"last_force_op_resend": "0",
"last_force_op_resend_preluminous": "0",
"auid": 0,
"snap_mode": "selfmanaged",
"snap_seq": 0,
"snap_epoch": 0,
"pool_snaps": [],
"removed_snaps": "[]",
"quota_max_bytes": 0,
"quota_max_objects": 0,
"tiers": [],
"tier_of": -1,
"read_tier": -1,
"write_tier": -1,
"cache_mode": "none",
"target_max_bytes": 0,
"target_max_objects": 0,
"cache_target_dirty_ratio_micro": 400000,
"cache_target_dirty_high_ratio_micro": 600000,
"cache_target_full_ratio_micro": 800000,
"cache_min_flush_age": 0,
"cache_min_evict_age": 0,
"erasure_code_profile": "",
"hit_set_params": {
"type": "none"
},
"hit_set_period": 0,
"hit_set_count": 0,
"use_gmt_hitset": true,
"min_read_recency_for_promote": 0,
"min_write_recency_for_promote": 0,
"hit_set_grade_decay_rate": 0,
"hit_set_search_last_n": 0,
"grade_table": [],
"stripe_width": 0,
"expected_num_objects": 0,
"fast_read": false,
"options": {},
"application_metadata": {
"cephfs": {}
}
},
{
"pool": 2,
"pool_name": "cephfs_metadata",
"flags": 1,
"flags_names": "hashpspool",
"type": 1,
"size": 1,
"min_size": 1,
"crush_rule": 0,
"object_hash": 2,
"pg_num": 128,
"pg_placement_num": 128,
"crash_replay_interval": 0,
"last_change": "77",
"last_force_op_resend": "0",
"last_force_op_resend_preluminous": "0",
"auid": 0,
"snap_mode": "selfmanaged",
"snap_seq": 0,
"snap_epoch": 0,
"pool_snaps": [],
"removed_snaps": "[]",
"quota_max_bytes": 0,
"quota_max_objects": 0,
"tiers": [],
"tier_of": -1,
"read_tier": -1,
"write_tier": -1,
"cache_mode": "none",
"target_max_bytes": 0,
"target_max_objects": 0,
"cache_target_dirty_ratio_micro": 400000,
"cache_target_dirty_high_ratio_micro": 600000,
"cache_target_full_ratio_micro": 800000,
"cache_min_flush_age": 0,
"cache_min_evict_age": 0,
"erasure_code_profile": "",
"hit_set_params": {
"type": "none"
},
"hit_set_period": 0,
"hit_set_count": 0,
"use_gmt_hitset": true,
"min_read_recency_for_promote": 0,
"min_write_recency_for_promote": 0,
"hit_set_grade_decay_rate": 0,
"hit_set_search_last_n": 0,
"grade_table": [],
"stripe_width": 0,
"expected_num_objects": 0,
"fast_read": false,
"options": {},
"application_metadata": {
"cephfs": {}
}
}
],
"osds": [
{
"osd": 0,
"uuid": "d66fad26-b234-4b72-bd9b-fde646cda5e9",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 5,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.18:6800/180692",
"cluster_addr": "192.168.40.18:6801/180692",
"heartbeat_back_addr": "192.168.40.18:6802/180692",
"heartbeat_front_addr": "192.168.40.18:6803/180692",
"state": [
"exists",
"up"
]
},
{
"osd": 1,
"uuid": "3d9bc6f2-1917-44e2-86d5-a33b2c519491",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 9,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.19:6800/210313",
"cluster_addr": "192.168.40.19:6801/210313",
"heartbeat_back_addr": "192.168.40.19:6802/210313",
"heartbeat_front_addr": "192.168.40.19:6803/210313",
"state": [
"exists",
"up"
]
},
{
"osd": 2,
"uuid": "909396c9-bb4f-478a-a147-219a528019a1",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 12,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.18:6804/181671",
"cluster_addr": "192.168.40.18:6805/181671",
"heartbeat_back_addr": "192.168.40.18:6806/181671",
"heartbeat_front_addr": "192.168.40.18:6807/181671",
"state": [
"exists",
"up"
]
},
{
"osd": 3,
"uuid": "3c94ac02-4e63-4387-9044-13e710db0b52",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 16,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.19:6804/211335",
"cluster_addr": "192.168.40.19:6805/211335",
"heartbeat_back_addr": "192.168.40.19:6806/211335",
"heartbeat_front_addr": "192.168.40.19:6807/211335",
"state": [
"exists",
"up"
]
},
{
"osd": 4,
"uuid": "b4e162a4-f7c8-4def-9b34-def31e54636e",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 20,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.18:6808/182682",
"cluster_addr": "192.168.40.18:6809/182682",
"heartbeat_back_addr": "192.168.40.18:6810/182682",
"heartbeat_front_addr": "192.168.40.18:6811/182682",
"state": [
"exists",
"up"
]
},
{
"osd": 5,
"uuid": "aab00ceb-1932-4d99-8736-38f7de5b8c3f",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 24,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.19:6808/212259",
"cluster_addr": "192.168.40.19:6809/212259",
"heartbeat_back_addr": "192.168.40.19:6810/212259",
"heartbeat_front_addr": "192.168.40.19:6811/212259",
"state": [
"exists",
"up"
]
},
{
"osd": 6,
"uuid": "adf9b122-036b-4bea-8c63-43a4e03593f3",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 28,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.18:6812/183594",
"cluster_addr": "192.168.40.18:6813/183594",
"heartbeat_back_addr": "192.168.40.18:6814/183594",
"heartbeat_front_addr": "192.168.40.18:6815/183594",
"state": [
"exists",
"up"
]
},
{
"osd": 7,
"uuid": "17520ef3-b8fa-4eec-8fec-654972e915a1",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 32,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.19:6812/213175",
"cluster_addr": "192.168.40.19:6813/213175",
"heartbeat_back_addr": "192.168.40.19:6814/213175",
"heartbeat_front_addr": "192.168.40.19:6815/213175",
"state": [
"exists",
"up"
]
},
{
"osd": 8,
"uuid": "38cd402b-98af-4902-82e1-c4700240e5e3",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 36,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.18:6816/184530",
"cluster_addr": "192.168.40.18:6817/184530",
"heartbeat_back_addr": "192.168.40.18:6818/184530",
"heartbeat_front_addr": "192.168.40.18:6819/184530",
"state": [
"exists",
"up"
]
},
{
"osd": 9,
"uuid": "665f52cc-67a3-4a1e-b5ab-13769983a42e",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 40,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.40.19:6816/214289",
"cluster_addr": "192.168.40.19:6817/214289",
"heartbeat_back_addr": "192.168.40.19:6818/214289",
"heartbeat_front_addr": "192.168.40.19:6819/214289",
"state": [
"exists",
"up"
]
},
{
"osd": 10,
"uuid": "6f74e272-af58-4d1c-88e0-5523b3ef517a",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 44,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.10.18:6800/185513",
"cluster_addr": "192.168.40.18:6820/185513",
"heartbeat_back_addr": "192.168.40.18:6821/185513",
"heartbeat_front_addr": "192.168.10.18:6801/185513",
"state": [
"exists",
"up"
]
},
{
"osd": 11,
"uuid": "dfb9c1ab-0e11-4e7c-b6f5-b60ecbd439b7",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 48,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.10.19:6800/215291",
"cluster_addr": "192.168.40.19:6820/215291",
"heartbeat_back_addr": "192.168.40.19:6821/215291",
"heartbeat_front_addr": "192.168.10.19:6801/215291",
"state": [
"exists",
"up"
]
},
{
"osd": 12,
"uuid": "396e5910-dca8-4408-8fbb-c46e844dad6b",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
"up_from": 52,
"up_thru": 74,
"down_at": 0,
"lost_at": 0,
"public_addr": "192.168.10.18:6802/186471",
"cluster_addr": "192.168.40.18:6822/186471",
"heartbeat_back_addr": "192.168.40.18:6823/186471",
"heartbeat_front_addr": "192.168.10.18:6803/186471",
"state": [
"exists",
"up"
]
},
{
"osd": 13,
"uuid": "bfc7d56c-065d-4f3e-9230-e341436fac3e",
"up": 1,
"in": 1,
"weight": 1.000000,
"primary_affinity": 1.000000,
"last_clean_begin": 0,
"last_clean_end": 0,
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}
}
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