[TOC]
背景
前段时间平台上一台虚拟机（10.xxx.xxx.224）因前期宿主机未配置LVM过滤器，宿主机同步接管了虚拟机LVM信息，在进行整改清理阶段导致虚拟机内LVM丢失，逻辑卷无法正常挂载。该系统使用LVM存储数据量较大，足有3、40T数据大小，如果这些数据真丢失无法找回，影响后果会非常严重，记录下这次虚拟机LVM信息修复还原过程。
– 平台：OpenStack(Pike)
– 存储：
– ceph 12.2.10（Luminous）
– 华为5310v5 SAN
- 虚拟机信息
[root@hostname]# nova list --all --ip 10.xxx.xxx.224
+--------------------------------------+--------------+----------------------------------+--------+------------+-------------+-----------------------+
| ID | Name | Tenant ID | Status | Task State | Power State | Networks |
+--------------------------------------+--------------+----------------------------------+--------+------------+-------------+-----------------------+
| d6b961ae-3df2-46d1-8128-bfdca907f0bd | JXGLPT-3 | 4489501ffc5c45d0babe4274360d2151 | ACTIVE | - | Running | vlan461=10.xxx.xxx.224 |
+--------------------------------------+--------------+----------------------------------+--------+------------+-------------+-----------------------+
- 虚拟机所在宿主机信息及实例名称
[root@hostname]# nova show d6b961ae-3df2-46d1-8128-bfdca907f0bd
...
| OS-EXT-SRV-ATTR:host | COM017 |
| OS-EXT-SRV-ATTR:hostname | jxglpt-3 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | COM017 |
| OS-EXT-SRV-ATTR:instance_name | instance-00000dda |
| id | d6b961ae-3df2-46d1-8128-bfdca907f0bd |
- 挂载卷信息
[root@hostname]# nova volume-attachments d6b961ae-3df2-46d1-8128-bfdca907f0bd
+--------------------------------------+----------+--------------------------------------+--------------------------------------+
| ID | DEVICE | SERVER ID | VOLUME ID |
+--------------------------------------+----------+--------------------------------------+--------------------------------------+
| b07ab1b8-4f96-4555-badc-a2c520e4df32 | /dev/vda | d6b961ae-3df2-46d1-8128-bfdca907f0bd | b07ab1b8-4f96-4555-badc-a2c520e4df32 |
| 9ee56873-0b56-4755-bf76-f588bbab79ff | /dev/vdb | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 9ee56873-0b56-4755-bf76-f588bbab79ff |
| f166d752-8f8b-40f6-be5d-0df857c78c25 | /dev/vdc | d6b961ae-3df2-46d1-8128-bfdca907f0bd | f166d752-8f8b-40f6-be5d-0df857c78c25 |
| ba8e07db-2499-4ece-8c9d-18cce929bac3 | /dev/vdd | d6b961ae-3df2-46d1-8128-bfdca907f0bd | ba8e07db-2499-4ece-8c9d-18cce929bac3 |
| 35eab613-cfd8-49c3-bec0-d627221f2185 | /dev/vde | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 35eab613-cfd8-49c3-bec0-d627221f2185 |
| e23a386b-a1c5-4c97-aac0-a75976bfbfdd | /dev/vdf | d6b961ae-3df2-46d1-8128-bfdca907f0bd | e23a386b-a1c5-4c97-aac0-a75976bfbfdd |
| 3dc03dfb-a6d5-439b-b78b-e6259cd3e1bf | /dev/vdg | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 3dc03dfb-a6d5-439b-b78b-e6259cd3e1bf |
| 0427c3f1-23dd-479b-b5b2-30043754937b | /dev/vdh | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 0427c3f1-23dd-479b-b5b2-30043754937b |
| e129f4e0-89c3-4f51-a1c9-32767b90f4a7 | /dev/vdi | d6b961ae-3df2-46d1-8128-bfdca907f0bd | e129f4e0-89c3-4f51-a1c9-32767b90f4a7 |
| aee0b85a-3be8-4e29-b938-53f6528b8466 | /dev/vdj | d6b961ae-3df2-46d1-8128-bfdca907f0bd | aee0b85a-3be8-4e29-b938-53f6528b8466 |
| 0bc61058-778a-405e-8bb9-48366950852b | /dev/vdk | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 0bc61058-778a-405e-8bb9-48366950852b |
| 796339b4-2047-408e-93c4-2a6a9ec74021 | /dev/vdl | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 796339b4-2047-408e-93c4-2a6a9ec74021 |
| be51bef6-5612-4e43-b076-f8bf4d19890f | /dev/vdm | d6b961ae-3df2-46d1-8128-bfdca907f0bd | be51bef6-5612-4e43-b076-f8bf4d19890f |
| edc0b346-b85f-4adb-814c-a457308e7731 | /dev/vdn | d6b961ae-3df2-46d1-8128-bfdca907f0bd | edc0b346-b85f-4adb-814c-a457308e7731 |
| a827106c-7d9c-4b14-88f3-98cc6b3a0a90 | /dev/vdo | d6b961ae-3df2-46d1-8128-bfdca907f0bd | a827106c-7d9c-4b14-88f3-98cc6b3a0a90 |
| 2aa41500-95e3-4cac-b770-d0365a40a3e1 | /dev/vdp | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 2aa41500-95e3-4cac-b770-d0365a40a3e1 |
| 3170184f-dc54-4f94-8895-e42de994f7d1 | /dev/vdq | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 3170184f-dc54-4f94-8895-e42de994f7d1 |
| 75c96474-3084-4fd1-a58d-be3fc75d3d73 | /dev/vdr | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 75c96474-3084-4fd1-a58d-be3fc75d3d73 |
| 6d276374-29df-415d-9765-e4499ebfde10 | /dev/vds | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 6d276374-29df-415d-9765-e4499ebfde10 |
| 984d05de-43bf-450d-85fd-d29b96fffd8e | /dev/vdt | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 984d05de-43bf-450d-85fd-d29b96fffd8e |
| 8ea55edd-f3e2-4633-9d1a-37cf9bd5f34e | /dev/vdu | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 8ea55edd-f3e2-4633-9d1a-37cf9bd5f34e |
| 8f536e21-bdab-4995-b822-b1780c6c66aa | /dev/vdv | d6b961ae-3df2-46d1-8128-bfdca907f0bd | 8f536e21-bdab-4995-b822-b1780c6c66aa |
+--------------------------------------+----------+--------------------------------------+--------------------------------------+
- 虚拟机实例磁盘挂载信息
[root@COM017 ~]# virsh domblklist instance-00000dda
Target Source
------------------------------------------------
hda vms/d6b961ae-3df2-46d1-8128-bfdca907f0bd_disk.config
hdb -
vda volumes/volume-b07ab1b8-4f96-4555-badc-a2c520e4df32
vdb volumes/volume-9ee56873-0b56-4755-bf76-f588bbab79ff
vdc /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8713700000002
vdd /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8718d00000003
vde /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8722d00000004
vdf /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d872ae00000005
vdg /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8731f00000006
vdh /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8739100000007
vdi /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8740300000008
vdj /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8748d00000009
vdk /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d874e60000000a
vdl /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8755a0000000b
vdm /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d875db0000000c
vdn /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8764c0000000d
vdo /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d876ad0000000e
vdp /dev/disk/by-id/dm-uuid-mpath-36bc76c5100b2de5711d8773e0000000f
vdq /dev/disk/by-id/dm-uuid-mpath-3600507670881094d3000000000000034
vdr /dev/disk/by-id/dm-uuid-mpath-3600507670881094d3000000000000035
vds /dev/disk/by-id/dm-uuid-mpath-3600507670881094d3000000000000036
vdt /dev/disk/by-id/dm-uuid-mpath-3600507670881094d3000000000000039
vdu /dev/disk/by-id/dm-uuid-mpath-3600507670881094d3000000000000038
vdv /dev/disk/by-id/dm-uuid-mpath-3600507670881094d3000000000000037