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如何访问通过 USB 连接的具有相同卷组 ID 的旧系统磁盘

tag-icon • tag-icon lvm mount
如何访问通过 USB 连接的具有相同卷组 ID 的旧系统磁盘

我最近不得不更换远程服务器中的系统磁盘，DC 将旧磁盘连接到 USB 端口。问题是 CentOS 是使用所有默认设置安装在两者上的，因此现在的输出lvscan是：

[root@IS-55825 /]# lvscan
  inactive          '/dev/vg_is55825/lv_root' [50.00 GiB] inherit
  inactive          '/dev/vg_is55825/lv_home' [53.46 GiB] inherit
  inactive          '/dev/vg_is55825/lv_swap' [7.67 GiB] inherit
  ACTIVE            '/dev/vg_is55825/lv_root' [50.00 GiB] inherit
  ACTIVE            '/dev/vg_is55825/lv_home' [53.24 GiB] inherit
  ACTIVE            '/dev/vg_is55825/lv_swap' [7.89 GiB] inherit

pvs可以分辨出差异，但我不知道如何将它们分开，以便我可以挂载其中一个旧分区来获取一些配置信息：

[root@IS-55825 /]# pvs -v
    Using physical volume(s) on command line.
    Wiping cache of LVM-capable devices
    Wiping internal VG cache
    Cache: Duplicate VG name vg_is55825: Existing KbuKYZ-yPtq-VI65-DlqY-e0j3-5Van-9UTe06 (created here) takes precedence over gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO
    Cache: Duplicate VG name vg_is55825: Existing KbuKYZ-yPtq-VI65-DlqY-e0j3-5Van-9UTe06 (created here) takes precedence over gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO
  PV         VG         Fmt  Attr PSize   PFree DevSize PV UUID
  /dev/sda2  vg_is55825 lvm2 a--u 111.13g    0  111.13g QC5BPW-VdKx-dNnw-vSNm-cH6H-fZwB-HHXwFb
  /dev/sdd2  vg_is55825 lvm2 a--u 111.13g    0  111.13g LNSYx6-8DCv-u9CG-S1zv-vI20-fNIq-7BA8Le

这就是/dev/sdd2我想要的，但它无法直接安装：

[root@IS-55825 /]# mount /dev/sdd2 /oldsys
mount: unknown filesystem type 'LVM2_member'

我试过了lvdisplay --select vg_uuid=LNSYx6-8DCv-u9CG-S1zv-vI20-fNIq-7BA8Le，但是没有输出，这就是我得到的...有什么办法可以访问它吗？

答案1

好的 - 我能够使用 来解决这个问题vgrename。首先，运行lvscan -v：

[root@IS-55825 ~]# lvscan -v
    Using logical volume(s) on command line.
    Cache: Duplicate VG name vg_is55825: Existing KbuKYZ-yPtq-VI65-DlqY-e0j3-5Van-9UTe06 (created here) takes precedence over gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO
    Cache: Duplicate VG name vg_is55825: Existing KbuKYZ-yPtq-VI65-DlqY-e0j3-5Van-9UTe06 (created here) takes precedence over gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO
    Cache: Duplicate VG name vg_is55825: Existing gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO (created here) takes precedence over KbuKYZ-yPtq-VI65-DlqY-e0j3-5Van-9UTe06
  inactive          '/dev/vg_is55825/lv_root' [50.00 GiB] inherit
  inactive          '/dev/vg_is55825/lv_home' [53.46 GiB] inherit
  inactive          '/dev/vg_is55825/lv_swap' [7.67 GiB] inherit
    Cache: Duplicate VG name vg_is55825: Existing KbuKYZ-yPtq-VI65-DlqY-e0j3-5Van-9UTe06 (created here) takes precedence over gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO
  ACTIVE            '/dev/vg_is55825/lv_root' [50.00 GiB] inherit
  ACTIVE            '/dev/vg_is55825/lv_home' [53.24 GiB] inherit
  ACTIVE            '/dev/vg_is55825/lv_swap' [7.89 GiB] inherit

所以我猜测 UUIDgVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO是旧磁盘。所以我运行了vgrename：

[root@IS-55825 ~]# vgrename gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO vg_oldsys
  Processing VG vg_is55825 because of matching UUID gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO
  Volume group "gVj6yw-hbls-RgTh-MKe3-saoW-KH3B-ggf2LO" successfully renamed to "vg_oldsys"

然后我就可以挂载了/dev/vg_oldsys/lv-root。呼。

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