Shulou(Shulou.com)06/03 Report--

Pvmove / dev/sdd-move PE data to other VG members vgreduce vg0 / dev/sdd Delete VG0 / dev/sddpvremove / dev/sdd Delete PV [root@centos6 ~] # lsblk-View / dev/sdb

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

Loop0 7:0 0 100M 0 loop / mnt/xdisk

Sda 8:0 0 200G 0 disk

├─ sda1 8:1 0 1G 0 part / boot

├─ sda2 8:2 0 97.7G 0 part /

├─ sda3 8:3 0 48.8G 0 part / data

├─ sda4 8:4 0 1K 0 part

└─ sda5 8:5 0 2G 0 part [SWAP]

Sdb 8:16 0 20G 0 disk

Sr0 11:0 1 1024M 0 rom

Loop100 7:100 0 100M 0 loop

[root@centos6 ~] # pvcreate / dev/sdb

Device / dev/sdb not found (or ignored by filtering).

[root@centos6 ~] # pvs

[root@centos6 ~] # dd if=/dev/zero of=/dev/sdb bs=1 count=512-- clear the partition information for / dev/sdb

512'0 records in

512'0 records out

512 bytes (512B) copied, 0.00557043 s, 91.9 kB/s

[root@centos6 ~] #

[root@centos6 ~] # lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

Loop0 7:0 0 100M 0 loop / mnt/xdisk

Sda 8:0 0 200G 0 disk

├─ sda1 8:1 0 1G 0 part / boot

├─ sda2 8:2 0 97.7G 0 part /

├─ sda3 8:3 0 48.8G 0 part / data

├─ sda4 8:4 0 1K 0 part

└─ sda5 8:5 0 2G 0 part [SWAP]

Sdb 8:16 0 20G 0 disk

Sr0 11:0 1 1024M 0 rom

Loop100 7:100 0 100M 0 loop

[root@centos6 ~] # mount

/ dev/sda2 on / type ext4 (rw)

Proc on / proc type proc (rw)

Sysfs on / sys type sysfs (rw)

Devpts on / dev/pts type devpts (rw,gid=5,mode=620)

Tmpfs on / dev/shm type tmpfs (rw)

/ dev/sda1 on / boot type ext4 (rw)

None on / proc/sys/fs/binfmt_misc type binfmt_misc (rw)

/ dev/sda3 on / data type ext4 (rw)

/ mnt/disk on / mnt/xdisk type ext4 (rw,loop=/dev/loop0)

[root@centos6 ~] #

[root@centos6 ~] # blkid-confirm that DEV/sdb does not have partition information

/ dev/sda1: UUID= "15c47a81-93fd-4e76-971e-2383b42b1f8f" TYPE= "ext4"

Dev/sda2: UUID= "70112905-ef35-4144-8a2e-1313c7378581" TYPE= "ext4"

Dev/sda5: UUID= "1311bb6e-4d1f-4cd1-8994-705d8203c6a0" TYPE= "swap"

/ dev/sda3: UUID= "d9896327-7ae0-4fe7-9993-e1b4e14faf6b" TYPE= "ext4"

Dev/loop0: UUID= "5ef7cf1b-23f9-48ec-a3de-3a44a8beb0a3" TYPE= "ext4"

Dev/loop100: UUID= "5ef7cf1b-23f9-48ec-a3de-3a44a8beb0a3" TYPE= "ext4"

[root@centos6 ~] # pvcreate / dev/sdb-create PV

Physical volume "/ dev/sdb" successfully created

[root@centos6 ~] # vgs

[root@centos6 ~] # vgcreate-s 16m vg0 / dev/sdb-create a physical volume vg0

Volume group "vg0" successfully created

[root@centos6 ~] # lvcreate-n mysql-L 2G vg0-- create lv

Logical volume "mysql" created.

[root@centos6 ~] # mkfs.ext4 / dev/vg0/mysql-Partition

Mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

131072 inodes, 524288 blocks

26214 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=536870912

16 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912

Writing inode tables: done

Creating journal (16384 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 36 mounts or

180 days, whichever comes first. Use tune2fs-c or-i to override.

[root@centos6 ~] #

[root@centos6 ~] # mkdir / mnt/mysql-create mount point

[root@centos6 ~] # mount / dev/vg0/mysql / mnt/mysql/--- mount

[root@centos6 ~] # cp / etc/* / mnt/mysql/-copy data

Cp: omitting directory/etc/ abrt'cp: omitting directory/etc/acpi'

Cp: omitting directory/etc/yum'cp: omitting directory/etc/yum.repos.d'

[root@centos6 ~] # ls / mnt/mysql/

Adjtime bashrc drirc gshadow issue.net logrotate.conf my.cnf pm-utils-hd-apm-restore.conf reader.conf smartd.conf warnquota.conf

Aliases cas.conf enscript.cfg gshadow- kde4rc lost+found nanorc pnm2ppa.conf redhat-release sos.conf wgetrc

Aliases.db centos-release environment gssapi_mech.conf kderc lsb-release netconfig

[root@centos6 ~] # umount / mnt/mysql/-uninstall

[root@centos6 ~] #

[root@centos6 ~] #

[root@centos6 ~] #

[root@centos6 ~] # df-confirm

Filesystem 1K-blocks Used Available Use% Mounted on

/ dev/sda2 100660656 4661276 90879380 5% /

Tmpfs 501508 72 501436 / dev/shm

/ dev/sda1 999320 34112 912780 4% / boot

/ dev/sda3 50264772 53048 47651724 1% / data

/ mnt/disk 95054 1550 88384 2% / mnt/xdisk

[root@centos6 ~] # vgrename vg0 vg1-change VG name

Volume group "vg0" successfully renamed to "vg1"

[root@centos6 ~] # vgdisplay--- confirmation

-Volume group

VG Name vg1

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 3

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 19.98 GiB

PE Size 16.00 MiB

Total PE 1279

Alloc PE / Size 128 / 2.00 GiB

Free PE / Size 1151 / 17.98 GiB

VG UUID UBne4H-QpbX-G3jP-Zq12-NUhZ-7iXV-OAPjCZ

[root@centos6 ~] # vgchange-an vg1-disable vg1

0 logical volume (s) in volume group "vg1" now active

[root@centos6 ~] # vgdisplay-confirm

-Volume group

VG Name vg1

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 3

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 19.98 GiB

PE Size 16.00 MiB

Total PE 1279

Alloc PE / Size 128 / 2.00 GiB

Free PE / Size 1151 / 17.98 GiB

VG UUID UBne4H-QpbX-G3jP-Zq12-NUhZ-7iXV-OAPjCZ

[root@centos6 ~] # lvdisplay

-Logical volume

LV Path / dev/vg1/mysql

LV Name mysql

VG Name vg1

LV UUID L9uTCB-aSN6-arMv-eLrA-rAcJ-eKO3-IIuWUX

LV Write Access read/write

LV Creation host, time centos6.localdomain, 2020-03-02 13:47:43 + 0800

LV Status NOT available

LV Size 2.00 GiB

Current LE 128

Segments 1

Allocation inherit

Read ahead sectors auto

[root@centos6 ~] # vgexport vg1-- Export VG1

Volume group "vg1" successfully exported

[root@centos6 ~] # lvdisplay-confirm

Volume group vg1 is exported

[root@centos6 ~] # vgdisplay

-Volume group

VG Name vg1

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 4

VG Access read/write

VG Status exported/resizable

MAX LV 0

Cur LV 1

Open LV 0

Max PV 0

Cur PV 1

Act PV 1

VG Size 19.98 GiB

PE Size 16.00 MiB

Total PE 1279

Alloc PE / Size 128 / 2.00 GiB

Free PE / Size 1151 / 17.98 GiB

VG UUID UBne4H-QpbX-G3jP-Zq12-NUhZ-7iXV-OAPjCZ

[root@bogon ~] $echo'--- > / sys/class/scsi_host/host2/scan-- add centos6's disk to Centos7

[root@bogon ~] $lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

Sda 8:0 0 200G 0 disk

├─ sda1 8:1 0 1G 0 part / mnt/boot

├─ sda2 8:2 0 100G 0 part /

├─ sda3 8:3 0 50G 0 part / data

├─ sda4 8:4 0 1K 0 part

├─ sda5 8:5 0 2G 0 part [SWAP]

├─ sda6 8:6 0 1G 0 part / mnt/sda6

└─ sda7 8:7 0 2G 0 part / mnt/sda7

Sdb 8:16 0 200G 0 disk

├─ sdb1 8:17 0 4G 0 part

│ └─ vg0-mysql 253:0 0 5.9G 0 lvm

└─ sdb2 8:18 0 2G 0 part / home

Sdc 8:32 0 20G 0 disk

Sdd 8:48 0 10G 0 disk

├─ vg0-mysql 253:0 0 5.9G 0 lvm

└─ vg0-binlog 253:1 0 1G 0 lvm / mnt/binlog

Sde 8:64 0 20G 0 disk

Sr0 11:0 1 3.7G 0 rom / mnt/cdrom

Sr1 11:1 1 10G 0 rom

[root@bogon ~] $

Root@bogon ~] $vgdisplay-see the new VG1

-Volume group

VG Name vg0

System ID

Format lvm2

Metadata Areas 3

Metadata Sequence No 22

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 2

Open LV 1

Max PV 0

Cur PV 3

Act PV 3

VG Size 33.95 GiB

PE Size 16.00 MiB

Total PE 2173

Alloc PE / Size 442 /

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