ProxmoxVE 之 系统重装磁盘清理

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上次有一台物理机装了PVE，由于当初规划没有规划好，在配置使用存储的时候出了问题，后面索性就重装，当重装后发现除了系统盘会格式化之外，其他原先的盘的分区信息还是存在，特别是残留了大量的lvm的信息，所以还是需要手工去干预处理。这里做一个记录。

按照一般的lvm删除lv vg pv的顺序，首先是删除vg下的lv ，再删除vg，最后删除pv ，但是一般情况下pve在使用过程中会产生大量的lv，所以在删除的时候，可以使用vgremove命令直接删除vg，会同时将vg下的lv删除。

重装完成后，pve节点会自己创建一个叫pve的vg ，除此之外的，都是原来残留的vg，如下所示：

root@pve:~# vgdisplay |more  --- Volume group ---  VG Name               ceph-d910d1d3-3595-4c5a-93ed-579e4a0968b4  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  17  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                1  Open LV               0  Max PV                0  Cur PV                1  Act PV                1  VG Size               30.00 GiB  PE Size               4.00 MiB  Total PE              7679  Alloc PE / Size       7679 / 30.00 GiB  Free  PE / Size       0 / 0     VG UUID               Ngu9qK-BILc-sY4K-BFLG-0ICd-k4Fp-5mVXpg     --- Volume group ---  VG Name               ceph-3ab6b8cb-a06c-458f-9947-eaaf40fc0525  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  17  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                1  Open LV               0  Max PV                0  Cur PV                1  Act PV                1  VG Size               30.00 GiB  PE Size               4.00 MiB  Total PE              7679  Alloc PE / Size       7679 / 30.00 GiB  Free  PE / Size       0 / 0     VG UUID               T8ReNU-YOdO-Bver-KdYe-NG1p-qoiv-T6tUO1     --- Volume group ---  VG Name               ceph-aa50bad9-b042-40bd-b060-438cddaf8ff2  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  17  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                1  Open LV               0  Max PV                0  Cur PV                1  Act PV                1  VG Size               30.00 GiB  PE Size               4.00 MiB  Total PE              7679  Alloc PE / Size       7679 / 30.00 GiB  Free  PE / Size       0 / 0     VG UUID               Wnn3OH-X11z-TovS-VFxn-sbz7-btsH-jPbUUa     --- Volume group ---  VG Name               ceph-38029056-30a1-4bb8-b94f-da32dde62217  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  17  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                1  Open LV               0  Max PV                0  Cur PV                1  Act PV                1  VG Size               30.00 GiB  PE Size               4.00 MiB  Total PE              7679  Alloc PE / Size       7679 / 30.00 GiB  Free  PE / Size       0 / 0     VG UUID               IT06de-ABnj-yE07-4VFS-WqES-0cep-7j3O4I     --- Volume group ---  VG Name               vg-sdb  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  4  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                1  Open LV               0  Max PV                0  Cur PV                1  Act PV                1  VG Size               32.00 GiB  PE Size               4.00 MiB  Total PE              8191  Alloc PE / Size       7696 / 30.06 GiB  Free  PE / Size       495 / 1.93 GiB  VG UUID               QDHI0E-K5Vd-DZ77-o6N9-JRGC-AezH-eIai7Q     --- Volume group ---  VG Name               pvevg2  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  493  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                23  Open LV               7  Max PV                0  Cur PV                1  Act PV                1  VG Size               556.93 GiB  PE Size               4.00 MiB  Total PE              142573  Alloc PE / Size       140836 / 550.14 GiB  Free  PE / Size       1737 / 6.79 GiB  VG UUID               0NWJ32-iGhh-jPU8-BwxZ-46Ie-5DDB-md0XFB     --- Volume group ---  VG Name               ceph-18ccfe46-ab1a-44e4-9b5e-910d55679b2d  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  17  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                1  Open LV               0  Max PV                0  Cur PV                1  Act PV                1  VG Size               30.00 GiB  PE Size               4.00 MiB  Total PE              7679  Alloc PE / Size       7679 / 30.00 GiB  Free  PE / Size       0 / 0     VG UUID               6A7ViB-O1UM-sbBw-iCSn-RR3D-IA2o-Uf5nMW     --- Volume group ---  VG Name               ceph-ca21f994-6ea2-4d97-9377-b71e1713089d  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  17  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                1  Open LV               0  Max PV                0  Cur PV                1  Act PV                1  VG Size               30.00 GiB  PE Size               4.00 MiB  Total PE              7679  Alloc PE / Size       7679 / 30.00 GiB  Free  PE / Size       0 / 0     VG UUID               bBvYWE-skn5-lD6G-A0aa-HvC1-cufv-HPh69e     --- Volume group ---  VG Name               pve  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  7  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                3  Open LV               2  Max PV                0  Cur PV                1  Act PV                1  VG Size               556.68 GiB  PE Size               4.00 MiB  Total PE              142509  Alloc PE / Size       138413 / 540.68 GiB  Free  PE / Size       4096 / 16.00 GiB  VG UUID               3rZ2nK-8oci-O0gh-c6ac-1XXX-slCA-5kh4jZ

接下来删除除了pve以外的所有vg：

root@pve:~# vgremove ceph-d910d1d3-3595-4c5a-93ed-579e4a0968b4Do you really want to remove volume group "ceph-d910d1d3-3595-4c5a-93ed-579e4a0968b4" containing 1 logical volumes? [y/n]: yDo you really want to remove and DISCARD active logical volume ceph-d910d1d3-3595-4c5a-93ed-579e4a0968b4/osd-block-8b281dbd-5dac-40c7-86a9-2eadcd9d876b? [y/n]: y  Logical volume "osd-block-8b281dbd-5dac-40c7-86a9-2eadcd9d876b" successfully removed  Volume group "ceph-d910d1d3-3595-4c5a-93ed-579e4a0968b4" successfully removedroot@pve:~# root@pve:~# vgremove ceph-3ab6b8cb-a06c-458f-9947-eaaf40fc0525Do you really want to remove volume group "ceph-3ab6b8cb-a06c-458f-9947-eaaf40fc0525" containing 1 logical volumes? [y/n]: yDo you really want to remove and DISCARD active logical volume ceph-3ab6b8cb-a06c-458f-9947-eaaf40fc0525/osd-block-7b89b395-2506-4997-a545-14eb1a5a029f? [y/n]: y  Logical volume "osd-block-7b89b395-2506-4997-a545-14eb1a5a029f" successfully removed  Volume group "ceph-3ab6b8cb-a06c-458f-9947-eaaf40fc0525" successfully removedroot@pve:~# root@pve:~# vgremove -f ceph-aa50bad9-b042-40bd-b060-438cddaf8ff2  Logical volume "osd-block-c1ccede6-d03b-409b-952d-57fd702b08fd" successfully removed  Volume group "ceph-aa50bad9-b042-40bd-b060-438cddaf8ff2" successfully removedroot@pve:~# root@pve:~# vgremove -f ceph-38029056-30a1-4bb8-b94f-da32dde62217  Logical volume "osd-block-a2331e8c-907b-48dd-a053-071d0e1d88ca" successfully removed  Volume group "ceph-38029056-30a1-4bb8-b94f-da32dde62217" successfully removedroot@pve:~# vgremove -f vg-sdb  Logical volume "lvm-sdb" successfully removed  Volume group "vg-sdb" successfully removedroot@pve:~# vgremove -f pvevg2  Logical volume "vm-112-disk-3" successfully removed  Logical volume "vm-112-disk-4" successfully removed  Logical volume "vm-111-disk-5" successfully removed  Logical volume "vm-112-disk-5" successfully removed  Logical volume "vm-113-disk-5" successfully removed  Logical volume "vm-112-disk-7" successfully removed  Logical volume "snap_vm-112-disk-2_pve52init1" successfully removed  Logical volume "snap_vm-112-disk-6_pve52init1" successfully removed  Logical volume "vm-111-state-pve52ceph2" successfully removed  Logical volume "vm-113-state-pve52ceph2" successfully removed  Logical volume "vm-111-state-pve52cephok" successfully removed  Logical volume "vm-113-state-pve52cephok" successfully removed  Logical volume pvevg2/vm-111-disk-2 is used by another device.root@pve:~# vgremove ceph-18ccfe46-ab1a-44e4-9b5e-910d55679b2d -f  Logical volume "osd-block-7e68233c-97b2-4bd7-8d24-a48212e02943" successfully removed  Volume group "ceph-18ccfe46-ab1a-44e4-9b5e-910d55679b2d" successfully removedroot@pve:~# vgremove ceph-ca21f994-6ea2-4d97-9377-b71e1713089d -f  Logical volume "osd-block-a489f6f9-e24d-408c-ada2-850dbe876c23" successfully removed  Volume group "ceph-ca21f994-6ea2-4d97-9377-b71e1713089d" successfully removedroot@pve:~#

再次查看vg和pv情况：

root@pve:~# vgdisplay   --- Volume group ---  VG Name               pve  System ID               Format                lvm2  Metadata Areas        1  Metadata Sequence No  7  VG Access             read/write  VG Status             resizable  MAX LV                0  Cur LV                3  Open LV               2  Max PV                0  Cur PV                1  Act PV                1  VG Size               556.68 GiB  PE Size               4.00 MiB  Total PE              142509  Alloc PE / Size       138413 / 540.68 GiB  Free  PE / Size       4096 / 16.00 GiB  VG UUID               3rZ2nK-8oci-O0gh-c6ac-1XXX-slCA-5kh4jZ   root@pve:~#root@pve:~# pvdisplay  --- Physical volume ---  PV Name               /dev/sda3  VG Name               pve  PV Size               556.68 GiB / not usable 1.98 MiB  Allocatable           yes   PE Size               4.00 MiB  Total PE              142509  Free PE               4096  Allocated PE          138413  PV UUID               6LqVrb-YLWy-doYc-RMVR-XA58-6XuQ-sSVpwD     "/dev/sdb1" is a new physical volume of "556.93 GiB"  --- NEW Physical volume ---  PV Name               /dev/sdb1  VG Name                 PV Size               556.93 GiB  Allocatable           NO  PE Size               0     Total PE              0  Free PE               0  Allocated PE          0  PV UUID               45XFJa-Uixa-4zi7-2Bbe-LnEs-vRea-XAKjiB

清理成功！

另外，记录一下，如果碰到一些lv像狗皮膏药一样怎么删都提示设备忙被占用的情况下怎么删除的方法。我参考了这个网址的内容：

http://blog.roberthallam.org/2017/12/solved-logical-volume-is-used-by-another-device/comment-page-1/

主要是用到了dmsetup这个更加底层的指令，主要步骤如下：

# lvremove -v /dev/vg/lv-old    DEGRADED MODE. Incomplete RAID LVs will be processed.    Using logical volume(s) on command line  Logical volume vg/lv-old is used by another device.  # dmsetup info -c | grep oldvg-lv--old       253   9 L--w    1    2      1 LVM-6O3jLvI6ZR3fg6ZpMgTlkqAudvgkfphCyPcP8AwpU2H57VjVBNmFBpLTis8ia0NE$ ls -la /sys/dev/block/253\:9/holdersdrwxr-xr-x 2 root root 0 Dec 12 01:07 .drwxr-xr-x 8 root root 0 Dec 12 01:07 ..lrwxrwxrwx 1 root root 0 Dec 12 01:07 dm-18 -> ../../dm-18# dmsetup remove /dev/dm-18# lvremove -v /dev/vgraid6/lv-old