Shulou(Shulou.com)06/02 Report--

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

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