记录一次Centos系统下lvm逻辑分区扩容失败记录_狷介

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记录一次Centos系统下lvm逻辑分区扩容失败记录

(2022-07-25 18:09:22)

分类： IT相关

[root@datatangseafile ~]# lsblk
NAME                                  MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                                     8:0    0   7.3T 0 disk
├─sda1                                  8:1    0   500M 0 part /boot
└─sda2                                  8:2    0   7.3T 0 part
├─vg_datatangseafile-lv_root (dm-0) 253:0    0    50G 0 lvm /
├─vg_datatangseafile-lv_swap (dm-1) 253:1    0   7.6G 0 lvm
└─vg_datatangseafile-lv_home (dm-2) 253:2    0   7.2T 0 lvm /home
sdb                                     8:16   0   9.1T 0 disk
├─sdb1                                  8:17   0   499M 0 part
├─sdb2                                  8:18   0   100M 0 part
├─sdb3                                  8:19   0    16M 0 part
├─sdb4                                  8:20   0 133.7G 0 part
└─sdb5                                  8:21   0     9T 0 part

[root@datatangseafile ~]# df -Th
Filesystem           Type   Size Used Avail Use% Mounted on
/dev/mapper/vg_datatangseafile-lv_root
                     ext4    50G 1.5G   46G   4% /
tmpfs                tmpfs 3.8G     0 3.8G   0% /dev/shm
/dev/sda1            ext4   477M   48M 404M 11% /boot
/dev/mapper/vg_datatangseafile-lv_home
                     ext4   7.2T 2.2T 4.6T 33% /home
[root@datatangseafile ~]# fdisk -l

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sda: 8001.6 GB, 8001563222016 bytes
255 heads, 63 sectors/track, 972801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id System
/dev/sda1               1      267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sdb: 10000.8 GB, 10000831348736 bytes
255 heads, 63 sectors/track, 1215865 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id System
/dev/sdb1               1      267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/mapper/vg_datatangseafile-lv_root: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/vg_datatangseafile-lv_swap: 8136 MB, 8136949760 bytes
255 heads, 63 sectors/track, 989 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/vg_datatangseafile-lv_home: 7939.2 GB, 7939209297920 bytes
255 heads, 63 sectors/track, 965220 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

[root@datatangseafile ~]# lsblk
NAME                                  MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                                     8:0    0   7.3T 0 disk
├─sda1                                  8:1    0   500M 0 part /boot
└─sda2                                  8:2    0   7.3T 0 part
├─vg_datatangseafile-lv_root (dm-0) 253:0    0    50G 0 lvm /
├─vg_datatangseafile-lv_swap (dm-1) 253:1    0   7.6G 0 lvm
└─vg_datatangseafile-lv_home (dm-2) 253:2    0   7.2T 0 lvm /home
sdb                                     8:16   0   9.1T 0 disk
├─sdb1                                  8:17   0   499M 0 part
├─sdb2                                  8:18   0   100M 0 part
├─sdb3                                  8:19   0    16M 0 part
├─sdb4                                  8:20   0 133.7G 0 part
└─sdb5                                  8:21   0     9T 0 part

[root@datatangseafile ~]# pvcreate /dev/sdb5
Physical volume "/dev/sdb5" successfully created
[root@datatangseafile ~]# pvdisplay
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg_datatangseafile
PV Size               7.28 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              1907595
Free PE               0
Allocated PE          1907595
PV UUID               JRVBzY-eiJe-apk8-QP1n-ldNK-VeuL-qpnVH6

"/dev/sdb5" is a new physical volume of "8.96 TiB"
--- NEW Physical volume ---
PV Name               /dev/sdb5
VG Name
PV Size               8.96 TiB
Allocatable           NO
PE Size               0
Total PE              0
Free PE               0
Allocated PE          0
PV UUID               mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d

[root@datatangseafile ~]# vgdisplay
--- Volume group ---
VG Name               vg_datatangseafile
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No 4
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               7.28 TiB
PE Size               4.00 MiB
Total PE              1907595
Alloc PE / Size       1907595 / 7.28 TiB
Free PE / Size       0 / 0
VG UUID               s7soE8-swut-DYbT-z5Rn-x9MQ-v8EC-tRGOLj

[root@datatangseafile ~]# fdisk -l

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn 't support GPT. Use GNU Parted.

Disk /dev/sda: 8001.6 GB, 8001563222016 bytes
255 heads, 63 sectors/track, 972801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id System
/dev/sda1               1      267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sdb: 10000.8 GB, 10000831348736 bytes
255 heads, 63 sectors/track, 1215865 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id System
/dev/sdb1               1      267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/mapper/vg_datatangseafile-lv_root: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/vg_datatangseafile-lv_swap: 8136 MB, 8136949760 bytes
255 heads, 63 sectors/track, 989 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/vg_datatangseafile-lv_home: 7939.2 GB, 7939209297920 bytes
255 heads, 63 sectors/track, 965220 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

[root@datatangseafile ~]# lsblk
NAME                                  MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                                     8:0    0   7.3T 0 disk
├─sda1                                  8:1    0   500M 0 part /boot
└─sda2                                  8:2    0   7.3T 0 part
├─vg_datatangseafile-lv_root (dm-0) 253:0    0    50G 0 lvm /
├─vg_datatangseafile-lv_swap (dm-1) 253:1    0   7.6G 0 lvm
└─vg_datatangseafile-lv_home (dm-2) 253:2    0   7.2T 0 lvm /home
sdb                                     8:16   0   9.1T 0 disk
├─sdb1                                  8:17   0   499M 0 part
├─sdb2                                  8:18   0   100M 0 part
├─sdb3                                  8:19   0    16M 0 part
├─sdb4                                  8:20   0 133.7G 0 part
└─sdb5                                  8:21   0     9T 0 part
[root@datatangseafile ~]# pvdisplay
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg_datatangseafile
PV Size               7.28 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              1907595
Free PE               0
Allocated PE          1907595
PV UUID               JRVBzY-eiJe-apk8-QP1n-ldNK-VeuL-qpnVH6

"/dev/sdb5" is a new physical volume of "8.96 TiB"
--- NEW Physical volume ---
PV Name               /dev/sdb5
VG Name
PV Size               8.96 TiB
Allocatable           NO
PE Size               0
Total PE              0
Free PE               0
Allocated PE          0
PV UUID               mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d

[root@datatangseafile ~]# vgdisplay
--- Volume group ---
VG Name               vg_datatangseafile
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No 4
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               7.28 TiB
PE Size               4.00 MiB
Total PE              1907595
Alloc PE / Size       1907595 / 7.28 TiB
Free PE / Size       0 / 0
VG UUID               s7soE8-swut-DYbT-z5Rn-x9MQ-v8EC-tRGOLj

[root@datatangseafile ~]# vgextend vg_datatangseafile /dev/sdb5
Volume group "vg_datatangseafile" successfully extended
[root@datatangseafile ~]# vgdisplay
--- Volume group ---
VG Name               vg_datatangseafile
System ID
Format                lvm2
Metadata Areas        2
Metadata Sequence No 6
VG Access             read/write
VG Status             resizable
MAX LV                0
Cur LV                3
Open LV               2
Max PV                0
Cur PV                2
Act PV                2
VG Size               16.24 TiB
PE Size               4.00 MiB
Total PE              4257594
Alloc PE / Size       1907595 / 7.28 TiB
Free PE / Size       2349999 / 8.96 TiB
VG UUID               s7soE8-swut-DYbT-z5Rn-x9MQ-v8EC-tRGOLj

[root@datatangseafile ~]# df -h
Filesystem            Size Used Avail Use% Mounted on
/dev/mapper/vg_datatangseafile-lv_root
                       50G 1.5G   46G   4% /
tmpfs                 3.8G     0 3.8G   0% /dev/shm
/dev/sda1             477M   48M 404M 11% /boot
/dev/mapper/vg_datatangseafile-lv_home
                      7.2T 2.2T 4.6T 33% /home
[root@datatangseafile ~]# lvextend -l +100%FREE /dev/mapper/vg_datatangseafile-lv_home
Size of logical volume vg_datatangseafile/lv_home changed from 7.22 TiB (1892855 extents) to 16.19 TiB (4242854 extents).
Logical volume lv_home successfully resized.
[root@datatangseafile ~]# lvdisplay /dev/mapper/vg_datatangseafile-lv_home
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256
Block device           253:2

[root@datatangseafile ~]# df -h
Filesystem            Size Used Avail Use% Mounted on
/dev/mapper/vg_datatangseafile-lv_root
                       50G 1.5G   46G   4% /
tmpfs                 3.8G     0 3.8G   0% /dev/shm
/dev/sda1             477M   48M 404M 11% /boot
/dev/mapper/vg_datatangseafile-lv_home
                      7.2T 2.2T 4.6T 33% /home
[root@datatangseafile ~]# df -Th
Filesystem           Type   Size Used Avail Use% Mounted on
/dev/mapper/vg_datatangseafile-lv_root
                     ext4    50G 1.5G   46G   4% /
tmpfs                tmpfs 3.8G     0 3.8G   0% /dev/shm
/dev/sda1            ext4   477M   48M 404M 11% /boot
/dev/mapper/vg_datatangseafile-lv_home
                     ext4   7.2T 2.2T 4.6T 33% /home
[root@datatangseafile ~]# xfs_growfs /dev/mapper/vg_datatangseafile-lv_home
xfs_growfs: /dev/mapper/vg_datatangseafile-lv_home is not a mounted XFS filesystem

[root@datatangseafile ~]# resize2fs /dev/mapper/vg_datatangseafile-lv_home
resize2fs 1.41.12 (17-May-2010)
resize2fs: New size too large to be expressed in 32 bits

[root@datatangseafile ~]# df -h
Filesystem            Size Used Avail Use% Mounted on
/dev/mapper/vg_datatangseafile-lv_root
                       50G 1.5G   46G   4% /
tmpfs                 3.8G     0 3.8G   0% /dev/shm
/dev/sda1             477M   48M 404M 11% /boot
/dev/mapper/vg_datatangseafile-lv_home
                      7.2T 2.2T 4.6T 33% /home
[root@datatangseafile ~]# df -h
Filesystem            Size Used Avail Use% Mounted on
/dev/mapper/vg_datatangseafile-lv_root
                       50G 1.5G   46G   4% /
tmpfs                 3.8G     0 3.8G   0% /dev/shm
/dev/sda1             477M   48M 404M 11% /boot
/dev/mapper/vg_datatangseafile-lv_home
                      7.2T 2.2T 4.6T 33% /home
[root@datatangseafile ~]# lvdisplay /dev/mapper/centos-root
Volume group "centos" not found
Cannot process volume group centos
[root@datatangseafile ~]#
[root@datatangseafile ~]# lvdisplay /dev/mapper/vg_datatangseafile-lv_home
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256
Block device           253:2

[root@datatangseafile ~]# lvdisplay /dev/mapper/vg_datatangseafile-lv_home
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256
Block device           253:2

[root@datatangseafile ~]# lvdisplay /dev/mapper/vg_datatangseafile-lv_home
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256
Block device           253:2

[root@datatangseafile ~]# uname -a
Linux datatangseafile.com 2.6.32-696.18.7.el6.x86_64 #1 SMP Thu Jan 4 17:31:22 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

[root@datatangseafile ~]# lvextend -l +98%FREE /dev/mapper/vg_datatangseafile-lv_home
[root@datatangseafile ~]# lvdisplay /dev/mapper/vg_datatangseafile-lv_home
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256
Block device           253:2

[root@datatangseafile ~]# lvdisplay /dev/mapper/vg_datatangseafile-lv_home
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256
Block device           253:2

[root@datatangseafile ~]# pvdisplay
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg_datatangseafile
PV Size               7.28 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              1907595
Free PE               0
Allocated PE          1907595
PV UUID               JRVBzY-eiJe-apk8-QP1n-ldNK-VeuL-qpnVH6

--- Physical volume ---
PV Name               /dev/sdb5
VG Name               vg_datatangseafile
PV Size               8.96 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              2349999
Free PE               0
Allocated PE          2349999
PV UUID               mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d

[root@datatangseafile ~]# pvremove -h
pvremove: Remove LVM label(s) from physical volume(s)

pvremove
        [--commandprofile ProfileName]
        [-d|--debug]
        [-f[f]|--force [--force]]
        [-h|-?|--help]
        [-t|--test]
        [-v|--verbose]
        [--version]
        [-y|--yes]
        PhysicalVolume [PhysicalVolume...]

[root@datatangseafile ~]# pvdisplay
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg_datatangseafile
PV Size               7.28 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              1907595
Free PE               0
Allocated PE          1907595
PV UUID               JRVBzY-eiJe-apk8-QP1n-ldNK-VeuL-qpnVH6

--- Physical volume ---
PV Name               /dev/sdb5
VG Name               vg_datatangseafile
PV Size               8.96 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              2349999
Free PE               0
Allocated PE          2349999
PV UUID               mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d

[root@datatangseafile ~]# lvdisplay
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_root
LV Name                lv_root
VG Name                vg_datatangseafile
LV UUID                ijZd9o-zu19-s46a-6ykj-xDEt-lkn7-tK59UQ
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                50.00 GiB
Current LE             12800
Segments               1
Allocation             inherit
Read ahead sectors     256
Block device           253:0

--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_swap
LV Name                lv_swap
VG Name                vg_datatangseafile
LV UUID                vxlCHc-MQN6-vt01-zwo1-Zq8q-uB7t-O8t8kX
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 0
LV Size                7.58 GiB
Current LE             1940
Segments               1
Allocation             inherit
Read ahead sectors     256
Block device           253:1

--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256
Block device           253:2

[root@datatangseafile ~]# lvremove -h
lvremove: Remove logical volume(s) from the system

lvremove
        [-A|--autobackup y|n]
        [--commandprofile ProfileName]
        [-d|--debug]
        [-f|--force]
        [-h|--help]
        [--noudevsync]
        [-S|--select Selection]
        [-t|--test]
        [-v|--verbose]
        [--version]
        LogicalVolume[Path] [LogicalVolume[Path]...]

[root@datatangseafile ~]# vgremove -h
vgremove: Remove volume group(s)

vgremove
        [--commandprofile ProfileName]
        [-d|--debug]
        [-f|--force]
        [-h|--help]
        [--noudevsync]
        [-S|--select Selection]
        [-t|--test]
        [-v|--verbose]
        [--version]
        VolumeGroupName [VolumeGroupName...]

[root@datatangseafile ~]# shutdown now

Broadcast message from root@datatangseafile.com
        (/dev/pts/0) at 2:10 ...

The system is going down for maintenance NOW!
[root@datatangseafile ~]#

[root@datatangseafile archive]# vgscan
Reading all physical volumes. This may take a while...
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
Found volume group "vg_datatangseafile" using metadata type lvm2

[root@datatangseafile archive]# pvscan
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
PV /dev/sda2   VG vg_datatangseafile   lvm2 [7.28 TiB / 0    free]
PV unknown device VG vg_datatangseafile   lvm2 [8.96 TiB / 0    free]
Total: 2 [16.24 TiB] / in use: 2 [16.24 TiB] / in no VG: 0 [0   ]

[root@datatangseafile archive]# lvscan
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
ACTIVE            '/dev/vg_datatangseafile/lv_root' [50.00 GiB] inherit
ACTIVE            '/dev/vg_datatangseafile/lv_swap' [7.58 GiB] inherit
inactive          '/dev/vg_datatangseafile/lv_home' [16.19 TiB] inherit

[root@datatangseafile archive]# pvdisplay
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg_datatangseafile
PV Size               7.28 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              1907595
Free PE               0
Allocated PE          1907595
PV UUID               JRVBzY-eiJe-apk8-QP1n-ldNK-VeuL-qpnVH6

--- Physical volume ---
PV Name               unknown device
VG Name               vg_datatangseafile
PV Size               8.96 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              2349999
Free PE               0
Allocated PE          2349999
PV UUID               mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d

[root@datatangseafile archive]# vgdisplay
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
--- Volume group ---
VG Name               vg_datatangseafile
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               1
Max PV                0
Cur PV                2
Act PV                1
VG Size               16.24 TiB
PE Size               4.00 MiB
Total PE              4257594
Alloc PE / Size       4257594 / 16.24 TiB
Free PE / Size       0 / 0
VG UUID               s7soE8-swut-DYbT-z5Rn-x9MQ-v8EC-tRGOLj

[root@datatangseafile archive]# lvdisplay
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_root
LV Name                lv_root
VG Name                vg_datatangseafile
LV UUID                ijZd9o-zu19-s46a-6ykj-xDEt-lkn7-tK59UQ
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 1
LV Size                50.00 GiB
Current LE             12800
Segments               1
Allocation             inherit
Read ahead sectors     256
Block device           253:0

--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_swap
LV Name                lv_swap
VG Name                vg_datatangseafile
LV UUID                vxlCHc-MQN6-vt01-zwo1-Zq8q-uB7t-O8t8kX
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              available
# open                 0
LV Size                7.58 GiB
Current LE             1940
Segments               1
Allocation             inherit
Read ahead sectors     256
Block device           253:1

--- Logical volume ---
LV Path                /dev/vg_datatangseafile/lv_home
LV Name                lv_home
VG Name                vg_datatangseafile
LV UUID                zx5T34-7IaD-ylAe-oa74-D03K-52AX-75y31S
LV Write Access        read/write
LV Creation host, time localhost.localdomain, 2019-03-21 08:52:41 -0400
LV Status              NOT available
LV Size                16.19 TiB
Current LE             4242854
Segments               2
Allocation             inherit
Read ahead sectors     256

[root@datatangseafile backup]# df -Th
Filesystem           Type   Size Used Avail Use% Mounted on
/dev/mapper/vg_datatangseafile-lv_root
                     ext4    50G 1.5G   46G   4% /
tmpfs                tmpfs 3.8G     0 3.8G   0% /dev/shm
/dev/sda1            ext4    50G 1.5G   46G   4% /boot
/dev/mapper/vg_datatangseafile-lv_home
                     ext4    50G 1.5G   46G   4% /home

[root@datatangseafile backup]# lsblk
NAME                                  MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                                     8:0    0   7.3T 0 disk
├─sda1                                  8:1    0   500M 0 part
└─sda2                                  8:2    0   7.3T 0 part
├─vg_datatangseafile-lv_root (dm-0) 253:0    0    50G 0 lvm /
└─vg_datatangseafile-lv_swap (dm-1) 253:1    0   7.6G 0 lvm
sdb                                     8:16   0   9.1T 0 disk
├─sdb1                                  8:17   0   499M 0 part
├─sdb2                                  8:18   0   100M 0 part
├─sdb3                                  8:19   0    16M 0 part
├─sdb4                                  8:20   0 133.7G 0 part
└─sdb5                                  8:21   0     9T 0 part

[root@datatangseafile backup]# cd /home
[root@datatangseafile home]# ls
[root@datatangseafile home]# pvcreate /dev/mapper/vg_datatangseafile-lv_home -u “mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d” --restorefile /etc/lvm/backup/vg_datatangseafile
Too many characters to be uuid.
Run `pvcreate --help' for more information.
[root@datatangseafile backup]# cat /etc/lvm/archive/* |grep mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d
                        id = "mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d"
                        id = "mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d"

[root@datatangseafile backup]# cd /etc/lvm/archive
[root@datatangseafile archive]# ls
vg_datatangseafile_00000-1959374370.vg vg_datatangseafile_00002-1773824715.vg vg_datatangseafile_00004-1738739734.vg
vg_datatangseafile_00001-2038434398.vg vg_datatangseafile_00003-1126580245.vg vg_datatangseafile_00005-1607963211.vg
[root@datatangseafile archive]#
[root@datatangseafile archive]# pvcreate /dev/sdb5 -u “mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d” --restorefile /etc/lvm/backup/vg_datatangseafile
Too many characters to be uuid.
Run `pvcreate --help' for more information.

[root@datatangseafile /]# pvcreate /dev/sdb5
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
Physical volume "/dev/sdb5" successfully created
[root@datatangseafile /]# pvdisplay
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg_datatangseafile
PV Size               7.28 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              1907595
Free PE               0
Allocated PE          1907595
PV UUID               JRVBzY-eiJe-apk8-QP1n-ldNK-VeuL-qpnVH6

--- Physical volume ---
PV Name               unknown device
VG Name               vg_datatangseafile
PV Size               8.96 TiB / not usable 4.00 MiB
Allocatable           yes (but full)
PE Size               4.00 MiB
Total PE              2349999
Free PE               0
Allocated PE          2349999
PV UUID               mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d

"/dev/sdb5" is a new physical volume of "8.96 TiB"
--- NEW Physical volume ---
PV Name               /dev/sdb5
VG Name
PV Size               8.96 TiB
Allocatable           NO
PE Size               0
Total PE              0
Free PE               0
Allocated PE          0
PV UUID               ai3PPO-kSTO-Xdxz-Kgki-d1fm-11hZ-6gWagF

[root@datatangseafile /]#
[root@datatangseafile /]# pvremove /dev/sdb5
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
Labels on physical volume "/dev/sdb5" successfully wiped
[root@datatangseafile archive]# pvscan
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
PV /dev/sda2   VG vg_datatangseafile   lvm2 [7.28 TiB / 0    free]
PV unknown device VG vg_datatangseafile   lvm2 [8.96 TiB / 0    free]
Total: 2 [16.24 TiB] / in use: 2 [16.24 TiB] / in no VG: 0 [0   ]
[root@datatangseafile archive]# vgreduce --removemissing /dev/vg_datatangseafile
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
WARNING: Partial LV lv_home needs to be repaired or removed.
There are still partial LVs in VG vg_datatangseafile.
To remove them unconditionally use: vgreduce --removemissing --force.
Proceeding to remove empty missing PVs.
[root@datatangseafile archive]# vgreduce --removemissing --force /dev/vg_datatangseafile
Couldn't find device with uuid mgQZyd-kV9t-niqq-xa7B-5I1Z-gzQU-Gzk93d.
Removing partial LV lv_home.
Logical volume "lv_home" successfully removed
Wrote out consistent volume group vg_datatangseafile
[root@datatangseafile archive]# pvdisplay
--- Physical volume ---
PV Name               /dev/sda2
VG Name               vg_datatangseafile
PV Size               7.28 TiB / not usable 4.00 MiB
Allocatable           yes
PE Size               4.00 MiB
Total PE              1907595
Free PE               1892855
Allocated PE          14740
PV UUID               JRVBzY-eiJe-apk8-QP1n-ldNK-VeuL-qpnVH6

总结：ext4 格式系统文件下扩容到最后一步报错：resize2fs: New size too large to be expressed in 32 bits。不知道该怎么处理，后来索性把lv_home删除了。把sdb格式化xfs格式，挂载到/home，还原home目录备份数据数据。

问题思考：

1，报错是否因为ext4格式最大限制16TB一下，如果是，那么系统文件换成xfs格式呢？如果不是文件格式问题是什么问题？

2，把lv_home逻辑分区删除了，如何在当前基础上重新把lv_home创建恢复？

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