LVM and disk quota
LVM and disk quota
Experimental requirements
1. Mount with lvm logical volumes (40G) and verify using / dev/vg01/lv01 / abc
two。 Expand lv01 to 60G (online expansion): verification
3. Set disk quotas for tom users: authentication (dd)
4. Add tom to the finance group (caiwu), set a quota for the finance group (smaller than tom's), and verify whether the small quota is effective! Verification
Create a physical volume
[root@dyh ~] # pvcreate / dev/sdb1 / dev/sdc1
Physical volume "/ dev/sdb1" successfully created.
Physical volume "/ dev/sdc1" successfully created.
Create a volume group
[root@dyh ~] # vgcreate vg01 / dev/sdb1
Volume group "vg01" successfully created
Expand volume group
[root@dyh ~] # vgextend vg01 / dev/sdc1
Volume group "vg01" successfully extended
Create a logical volume
[root@dyh ~] # lvcreate-L 20g-n lv01 vg01 creates a logical volume lv01 with a size of 20G from vg01
Logical volume "lv01" created.
Format logical volumes
[root@dyh ~] # mkfs.xfs / dev/vg01/lv01
Experimental requirement one
Mount logical Volume
Experimental requirement two
Remount logical volume / dev/vg01/lv01 and add quota support
[root@dyh] # mount-o usrquota,gropquota / dev/vg01/lv01
Mount: / dev/mapper/vg01-lv01 has been mounted or / abc is busy
/ dev/mapper/vg01-lv01 has been mounted on / abc
[root@dyh ~] # chmod 777 / abc
[root@dyh ~] # vi / etc/fstab
[root@dyh] # mount-a
Experimental requirements three
Set disk quotas for users
[root@dyh] # xfs_quota-x-c 'limit-u bsoft=1M bhard=2M isoft=2 ihard=4 tom' / abc
Inspection
I. disk space
two。 Number of Fil
Create a group
[root@dyh ~] # groupadd caiwu
[root@dyh] # usermod-g caiwu tom changes the basic group of Tom to caiwu
[root@dyh ~] # groups tom
Tom: caiwu
Experimental requirement four
Set the disk quota for the group
[root@dyh] # xfs_quota-x-c 'limit-g bsoft=1M bhard=3M isoft=2 ihard=3 caiwu' / abc
Tom is 2m, caiwu is 3m, and the result is that 2m is effective.
Two. number of files
The limited quantity of Tom is 4 and the limited number of caiwu is 3. As a result, 3 of caiwu takes effect.
Conclusion: disk quota for users and groups, small effective
