查看bluestore里onode的方法：
[root@localhost mon.a]# cd /home/ceph-14.2.22/build/
[root@localhost build]# ceph-kvstore-tool bluestore-kv dev/osd0 list
[root@localhost build]# ceph-kvstore-tool bluestore-kv dev/osd0 list | grep O
[root@localhost build]# ceph-kvstore-tool bluestore-kv dev/osd0 get O %7f%80%00%00%00%00%00%00%06%92%04%1c%14%21f4862da6-e86b-497e-b9a8-a219a4190f9f.4161.1_stranobj1%21%3d%ff%ff%ff%ff%ff%ff%ff%fe%ff%ff%ff%ff%ff%ff%ff%ffo out /var/stran/onode_stran
[root@localhost build]# ceph-dencoder type bluestore_onode_t import onode_stran decode dump_json
error: stray data at end of buffer, offset 1150
[root@localhost build]# dd if=./onode_stran of=onode_stran_tmp bs=1 count=1150
1150+0 records in
1150+0 records out
1150 bytes (1.2 kB) copied, 0.00119041 s, 966 kB/s
[root@localhost build]# ceph-dencoder type bluestore_onode_t import onode_stran_tmp decode dump_json
[root@localhost mon.a]# ceph-kvstore-tool rocksdb store.db/ list |grep osdmap | head -100
2022-04-14 00:55:33.108 7fe2a71ccec0 1 rocksdb: do_open column families: [default]
health osdmap
osdmap 1
osdmap first_committed
osdmap full_1
osdmap full_10
[root@localhost mon.a]# ceph-kvstore-tool rocksdb store.db/ get osdmap full_1 out osdmap-full_1.txt
2022-04-14 00:56:25.062 7fdcb91b4ec0 1 rocksdb: do_open column families: [default]
(osdmap, full_1)
[root@localhost mon.a]# ceph-dencoder import osdmap-full_1.txt type OSDMap decode dump_json
{
"epoch": 1,
"fsid": "a803907b-5092-4507-9d6e-bbafc0a86bcw",
"created": "2022-10-13 14:55:11.357116",
"modified": "2022-10-13 14:55:11.357116",
"last_up_change": "0.000000",
"last_in_change": "0.000000",
"flags": "sortbitwise,recovery_deletes,purged_snapdirs,pglog_hardlimit",
"flags_num": 5799936,
"flags_set": [
"pglog_hardlimit",
"purged_snapdirs",
"recovery_deletes",
"sortbitwise"
],
"crush_version": 1,
"full_ratio": 0.99000000953674316,
"backfillfull_ratio": 0.99000000953674316,
"nearfull_ratio": 0.99000000953674316,
"cluster_snapshot": "",
"pool_max": 0,
"max_osd": 0,
"require_min_compat_client": "jewel",
"min_compat_client": "jewel",
"require_osd_release": "nautilus",
"pools": [],
"osds": [],
"osd_xinfo": [],
"pg_upmap": [],
"pg_upmap_items": [],
"pg_temp": [],
"primary_temp": [],
"blacklist": {},
"erasure_code_profiles": {
"default": {
"crush-failure-domain": "osd",
"k": "2",
"m": "1",
"plugin": "jerasure",
"technique": "reed_sol_van"
}
},
"removed_snaps_queue": [],
"new_removed_snaps": [],
"new_purged_snaps": [],
"crush_node_flags": {},
"device_class_flags": {}
}
