计算节点重启后虚机无法正常运行 修复OpenStack集群重启，导致虚拟机启动失败

admin

根据提示查询打印的信息

9 p. K. z, ]  Q1 f6 X' v4 s7 A[root@ceph1 ~]# dmesg | tail
. h8 f2 U9 q" p8 v/ d- q: n[10440.462708] rbd: image mytest: image uses unsupported features: 0x3c
这个地方提示的很清楚了，不支持的属性0x3c，0x3c是16进制的数值，换算成10进制是3*16+12=60
60的意思是不支持：
  G. F- x5 r: G; t7 t3 |2 t
32+16+8+4 = exclusive-lock, object-map, fast-diff, deep-flatten
3 _; u. Q# \' }+ Z也就是不支持这些属性，现在动态关闭这些属性
7 d8 M. ~& I# v4 U- l: W5 s8 t% L关闭这些属性
! s% f5 `  z0 W/ W3 l3 T
rbd feature disable {poolname}/{imagename} {feature}
' R* |+ f5 L" P/ L7 b. [如果不想动态的关闭，那么在创建rbd之前，在配置文件中设置这个参数即可
; Z4 v/ B' d3 ~5 f7 E: h# _
. ?' m1 `& J: [+ Nrbd_default_features = 3
关于属性支持的，目前到内核4.6仍然只支持
# ^" j" k+ k* p( elayering,striping = 1 + 2
这两个属性

admin

[root@compute01 ~]# rbd -p vms ls |grep fb1cbc25-dc18-4e8f-99f8-5db929569883
$ J' K1 F6 O. i: i/ S' q& v3 Dvolume-fb1cbc25-dc18-4e8f-99f8-5db929569883
5 k/ T+ o$ v; _* O% c- E[root@compute01 ~]# rbd -p vms info volume-fb1cbc25-dc18-4e8f-99f8-5db929569883
1 Q, L1 Y0 T" B/ h3 K) z3 \* ^rbd image 'volume-fb1cbc25-dc18-4e8f-99f8-5db929569883':
8 Z8 j: k7 q+ f  l6 M- u        size 80 GiB in 20480 objects
) m; z( \5 j0 s; r; L        order 22 (4 MiB objects)
7 b8 s8 i7 R0 C! F        snapshot_count: 0
        id: 38dd3abc54d56
        block_name_prefix: rbd_data.38dd3abc54d56
% |# R/ ]7 [% y1 N% p3 S        format: 2
        features: layering, exclusive-lock, object-map, fast-diff, deep-flatten
        op_features:
        flags:
; E, U. b( I  r8 j/ ]/ ?3 ?        create_timestamp: Thu Jul  1 16:59:55 2021
4 D3 E: \; _/ V, V0 s' @2 @# w        access_timestamp: Thu Jul  1 16:59:55 2021
5 {1 a/ A, e) s5 ]5 L' Q        modify_timestamp: Thu Jul  1 16:59:55 2021
7 B0 O6 j) n. ?  i  `        parent: images/09de3444-8be6-41f3-b91f-6091afdb56b0@snap
  i  M# L# a& ], F- b% p% E        overlap: 4 GiB
[root@compute01 ~]# rbd feature disable exclusive-lock object-map fast-diff deep-flatten --image volume-fb1cbc25-dc18-4e8f-99f8-5db929569883  -p vms
% @+ n" R6 b! l+ `[root@compute01 ~]# rbd showmapped
: p. H4 z; q; a2 h$ h1 B[root@compute01 ~]# rbd -p vms info volume-fb1cbc25-dc18-4e8f-99f8-5db929569883
rbd image 'volume-fb1cbc25-dc18-4e8f-99f8-5db929569883':
        size 80 GiB in 20480 objects
        order 22 (4 MiB objects)
& q5 \. [" G8 J! o: g; B( z8 l8 e% A        snapshot_count: 0
        id: 38dd3abc54d56
1 y/ O/ X. J: J        block_name_prefix: rbd_data.38dd3abc54d56
$ {  @6 h( Z1 ~& I        format: 2
        features: layering
, D  R% t3 f0 [  f( E: ~        op_features:
! O, W# Q' H6 m        flags:
        create_timestamp: Thu Jul  1 16:59:55 2021
        access_timestamp: Thu Jul  1 16:59:55 2021
        modify_timestamp: Thu Jul  1 16:59:55 2021
        parent: images/09de3444-8be6-41f3-b91f-6091afdb56b0@snap
        overlap: 4 GiB
[root@compute01 ~]# ceph daemon mon.`hostname -s` config show  | grep rbd_default_features
0 _$ D( a' o+ D0 n2 ?    "rbd_default_features": "3",

admin

[root@compute01 ~]# rbd -p vms ls |grep 6b44b22d-cd07-429c-883a-1a38ebdf8415
volume-6b44b22d-cd07-429c-883a-1a38ebdf8415
[root@compute01 ~]# rbd -p vms info volume-6b44b22d-cd07-429c-883a-1a38ebdf8415
rbd image 'volume-6b44b22d-cd07-429c-883a-1a38ebdf8415':
        size 50 GiB in 12800 objects
        order 22 (4 MiB objects)
& e* F$ [. Y2 L/ D7 p3 A        snapshot_count: 0
        id: 2aab40cfafa34
        block_name_prefix: rbd_data.2aab40cfafa34
        format: 2
        features: layering, exclusive-lock, object-map, fast-diff, deep-flatten
8 O7 l$ p1 J+ ~7 A8 L+ Z4 t: _        op_features:
5 `0 Q7 D. N/ {5 y        flags:
        create_timestamp: Wed Jun 30 12:32:57 2021
        access_timestamp: Wed Jun 30 12:32:57 2021
        modify_timestamp: Wed Jun 30 12:32:57 2021
3 Z( m/ M2 _  M3 R- J: r        parent: images/059f3ad6-9591-462c-93e0-caec5f159a8d@snap
/ C6 G) [8 E( x        overlap: 4 GiB
; m8 _' A( s+ v1 L% n[root@compute01 ~]# rbd feature
disable  enable   
, V" q7 D# ?4 G[root@compute01 ~]# rbd feature disable exclusive-lock object-map fast-diff deep-flatten --image vms/volume-6b44b22d-cd07-429c-883a-1a38ebdf8415
4 c1 s' ?9 a/ t[root@compute01 ~]# rbd -p vms info volume-6b44b22d-cd07-429c-883a-1a38ebdf8415
3 x2 g" I# K9 {2 zrbd image 'volume-6b44b22d-cd07-429c-883a-1a38ebdf8415':
$ l. L7 [# B' N0 F' l: K0 @) Y        size 50 GiB in 12800 objects
        order 22 (4 MiB objects)
        snapshot_count: 0
        id: 2aab40cfafa34
, z5 f$ a  l+ t- h/ n        block_name_prefix: rbd_data.2aab40cfafa34
        format: 2
        features: layering
        op_features:
, P1 C. A" O7 q# o' {, K        flags:
" N1 t/ g. i9 n, r+ y2 L        create_timestamp: Wed Jun 30 12:32:57 2021
2 {# ]; E+ G9 T# U/ A: j        access_timestamp: Wed Jun 30 12:32:57 2021
4 A2 A. e3 Q4 T' r. C8 i+ d        modify_timestamp: Wed Jun 30 12:32:57 2021
. c! e' I' T! x& v9 x$ o$ z        parent: images/059f3ad6-9591-462c-93e0-caec5f159a8d@snap
        overlap: 4 GiB

admin

rbd feature disable exclusive-lock object-map fast-diff deep-flatten --image volumes-hdd/volume-92d2f06c-fb75-4948-b7ba-211d2c2a43f7     disabled的第二种做法