How to migrate mixed striped+lin
2023-12-07 本文已影响0人
yangqing
环境
- CentOS 9/8/7/6
问题
在 LV 由多个混合条带类型段组成的情况下，其中一些是线性的，一些是条带的。
例如：
[root@centos-6 ~]# lvs -a -o lv_name,vg_name,lv_attr,lv_layout,lv_size,origin,copy_percent,devices,stripes,seg_count
LV VG Attr Layout LSize Origin Cpy%Sync Devices #Str #Seg
mixed test -wi-a----- linear,striped 159.97g /dev/sdi(0),/dev/sdj(0),/dev/sdk(0) 3 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdh(0) 1 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdg(0) 1 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdd(0),/dev/sde(0),/dev/sdf(0) 3 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdi(5035),/dev/sdj(5035),/dev/sdk(5035) 3 5
以上 LV 是由 5 个段组成的。两个是线性的（条带计数 = 1），另外 3 个段在设备上条带化，起始物理范围位于偏移 0 处/dev/sdi,/dev/sdj ,/dev/sdk和设备/dev/sdd,/dev/sde ,/dev/sdf 。最后一段位于设备上/dev/sdi,/dev/sdj ,/dev/sdk起始物理范围偏移量为 5035。
卷组 (VG) 没有任何可用空间。
[root@centos-6 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
test 8 1 0 wz--n- 159.97g 0
解决
要解决此问题，您首先需要将逻辑卷 (LV) 的大小分配给同一个 VG。
[root@centos-6 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
test 8 1 0 wz--n- 159.97g 0
[root@centos-6 ~]# vgextend test /dev/sdb /dev/sda /dev/sdc
Volume group "test" successfully extended
[root@centos-6 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
test 11 1 0 wz--n- 319.96g 159.99g
现在，您可以使用 corelog（在内存中）创建从原始 PV 到新分配的 PV 的镜像。这可以通过 ctrl-c 中断，同步将在后台继续。请务必等到同步完成后再继续下一步。
CentOS 6
[root@centos-6 ~]# lvconvert -m 1 --corelog test/mixed /dev/sda /dev/sdb /dev/sdc
test/mixed: Converted: 0.0%
test/mixed: Converted: 1.6%
test/mixed: Converted: 3.1%
test/mixed: Converted: 4.6%
^C
[root@centos-6 ~]# lvs -a -o lv_name,vg_name,lv_attr,lv_layout,lv_size,origin,copy_percent,devices,stripes,seg_count
LV VG Attr Layout LSize Origin Cpy%Sync Devices #Str #Seg
mixed test mwi-a-m--- mirror 159.97g 100.00 mixed_mimage_0(0),mixed_mimage_1(0) 2 1
[mixed_mimage_0] test iwi-aom--- linear,striped 159.97g /dev/sdi(0),/dev/sdj(0),/dev/sdk(0) 3 5
[mixed_mimage_0] test iwi-aom--- linear,striped 159.97g /dev/sdh(0) 1 5
[mixed_mimage_0] test iwi-aom--- linear,striped 159.97g /dev/sdg(0) 1 5
[mixed_mimage_0] test iwi-aom--- linear,striped 159.97g /dev/sdd(0),/dev/sde(0),/dev/sdf(0) 3 5
[mixed_mimage_0] test iwi-aom--- linear,striped 159.97g /dev/sdi(5035),/dev/sdj(5035),/dev/sdk(5035) 3 5
[mixed_mimage_1] test iwi-aom--- linear 159.97g /dev/sdb(0) 1 3
[mixed_mimage_1] test iwi-aom--- linear 159.97g /dev/sda(0) 1 3
[mixed_mimage_1] test iwi-aom--- linear 159.97g /dev/sdc(0) 1 3
CentOS 7,8,9
[root@centos-9 ~]# lvconvert --type mirror -m 1 --corelog test/mixed /dev/sd[i-o]
test/mixed: Converted: 0.0%
test/mixed: Converted: 1.6%
test/mixed: Converted: 3.1%
test/mixed: Converted: 4.6%
^C
[root@centos-9 ~]# lvs -a -o lv_name,vg_name,lv_attr,lv_layout,lv_size,origin,copy_percent,devices,stripes,seg_count test
LV VG Attr Layout LSize Origin Cpy%Sync Devices #Str #Seg
mixed test mwi-a-m--- mirror 699.97g 100.00 mixed_mimage_0(0),mixed_mimage_1(0) 2 1
[mixed_mimage_0] test Iwi-aom--- linear,striped 699.97g /dev/sda(0),/dev/sdb(0),/dev/sdc(0) 3 4
[mixed_mimage_0] test Iwi-aom--- linear,striped 699.97g /dev/sdd(0) 1 4
[mixed_mimage_0] test Iwi-aom--- linear,striped 699.97g /dev/sde(0),/dev/sdf(0) 2 4
[mixed_mimage_0] test Iwi-aom--- linear,striped 699.97g /dev/sdh(0) 1 4
[mixed_mimage_1] test Iwi-aom--- linear 699.97g /dev/sdi(0) 1 7
[mixed_mimage_1] test Iwi-aom--- linear 699.97g /dev/sdj(0) 1 7
[mixed_mimage_1] test Iwi-aom--- linear 699.97g /dev/sdk(0) 1 7
[mixed_mimage_1] test Iwi-aom--- linear 699.97g /dev/sdl(0) 1 7
[mixed_mimage_1] test Iwi-aom--- linear 699.97g /dev/sdm(0) 1 7
[mixed_mimage_1] test Iwi-aom--- linear 699.97g /dev/sdn(0) 1 7
[mixed_mimage_1] test Iwi-aom--- linear 699.97g /dev/sdo(0) 1 7
一旦设备完全同步。您可以从镜子上取下原腿，只留下 线性装置。为此，您需要指定应从镜像中删除哪些 PV。
[root@centos-6 ~]# lvconvert -m 0 test/mixed /dev/sd[d-k]
Logical volume mixed converted.
[root@centos-6 ~]# lvs -a -o lv_name,vg_name,lv_attr,lv_layout,lv_size,origin,copy_percent,devices,stripes,seg_count
LV VG Attr Layout LSize Origin Cpy%Sync Devices #Str #Seg
mixed test -wi-a----- linear 159.97g /dev/sdb(0) 1 3
mixed test -wi-a----- linear 159.97g /dev/sda(0) 1 3
mixed test -wi-a----- linear 159.97g /dev/sdc(0) 1 3
CentOS 7,8,9
[root@centos-9 ~]# lvconvert --type mirror -m 0 test/mixed /dev/sd{a,b,c,d,e,f,h}
[root@centos-9 ~]# lvs -a -o lv_name,vg_name,lv_attr,lv_layout,lv_size,origin,copy_percent,devices,stripes,seg_count test
LV VG Attr Layout LSize Origin Cpy%Sync Devices #Str #Seg
mixed test -wi-a----- linear 699.97g /dev/sdi(0) 1 7
mixed test -wi-a----- linear 699.97g /dev/sdj(0) 1 7
mixed test -wi-a----- linear 699.97g /dev/sdk(0) 1 7
mixed test -wi-a----- linear 699.97g /dev/sdl(0) 1 7
mixed test -wi-a----- linear 699.97g /dev/sdm(0) 1 7
mixed test -wi-a----- linear 699.97g /dev/sdn(0) 1 7
mixed test -wi-a----- linear 699.97g /dev/sdo(0) 1 7
诊断步骤
[root@centos-6 ~]# lvs -a -o lv_name,vg_name,lv_attr,lv_layout,lv_size,origin,copy_percent,devices,stripes,seg_count
LV VG Attr Layout LSize Origin Cpy%Sync Devices #Str #Seg
mixed test -wi-a----- linear,striped 159.97g /dev/sdi(0),/dev/sdj(0),/dev/sdk(0) 3 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdh(0) 1 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdg(0) 1 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdd(0),/dev/sde(0),/dev/sdf(0) 3 5
mixed test -wi-a----- linear,striped 159.97g /dev/sdi(5035),/dev/sdj(5035),/dev/sdk(5035) 3 5
