Проверка (RC20-21)¶

[root@centos-vm ~]# vgcreate WSR_LVM /dev/sdb /dev/sdc /dev/sdd
  Volume group "WSR_LVM" successfully created

[root@centos-vm ~]# vgs
  VG      #PV #LV #SN Attr   VSize   VFree
  WSR_LVM   3   0   0 wz--n- <11.99g <11.99g
  cl        1   2   0 wz--n- <19.00g      0

[root@centos-vm ~]# lvcreate -L 200M -n Users /dev/WSR_LVM
  Logical volume "Users" created.

[root@centos-vm ~]# lvdisplay
  --- Logical volume ---
  LV Path                /dev/WSR_LVM/Users
  LV Name                Users
  VG Name                WSR_LVM
  LV UUID                mD0mGy-3Wjb-uNMw-3t9d-Gs4p-bbCN-dCbXGO
  LV Write Access        read/write
  LV Creation host, time centos-vm, 2021-02-18 18:13:42 +0700
  LV Status              available
  # open                 0
  LV Size                200.00 MiB
  Current LE             50
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:2

-----------  

  [root@centos-vm ~]# mkfs.ext4 /dev/WSR_LVM/Users
mke2fs 1.45.4 (23-Sep-2019)
Creating filesystem with 204800 1k blocks and 51200 inodes
Filesystem UUID: a5f6ae57-4311-455e-81f6-d4a47866e551
Superblock backups stored on blocks:
        8193, 24577, 40961, 57345, 73729

Allocating group tables: done
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done

[root@centos-vm ~]# lvcreate -l 40%VG -n Shares /dev/WSR_LVM
  Logical volume "Shares" created.

[root@centos-vm ~]# mkfs.ext4 /dev/WSR_LVM/Shares
mke2fs 1.45.4 (23-Sep-2019)
Creating filesystem with 1256448 4k blocks and 314496 inodes
Filesystem UUID: 3995861f-f71e-4087-8d11-63289e8802cf
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736

Allocating group tables: done
Writing inode tables: done
Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done

[root@centos-vm ~]# crontab -l
0 * * * * /root/create_snap.sh

  GNU nano 2.9.8                                    create_snap.sh

#!/bin/bash
i=$(lvs | grep -c SNAP*)
echo $i
i=$(($i+1))
echo $i
for y in $(seq -w $i 99)
do
lvcreate -l 5%VG -s -n "SNAP-$y" /dev/WSR_LVM/Shares
break
done

[root@centos-vm ~]# lvcreate -s -l 30%ORIGIN -n CLEAR /dev/WSR_LVM/Users
  Logical volume "CLEAR" created.

[root@centos-vm ~]# cat /etc/systemd/system/*.mount
[Unit]
Description=Mount LV Shares

[Mount]
What=/dev/WSR_LVM/Shares
Where=/opt/Shares
Type=ext4
Options=defaults

[Install]
WantedBy=multi-user.target

-_-_-_-_-_-_-

[Unit]
Description=Mount LV Users

[Mount]
What=/dev/WSR_LVM/Users
Where=/opt/Users
Type=ext4
Options=defaults

[Install]
WantedBy=multi-user.target