hello
i want to allow each user a separate partition on CentOS server. i first installed "quota", and use vim /etc/fstab command and edit it as follow:
dev/mapper/vg_ayk00-lv_home /home ext4 defaults,usrqota 1 1
After that i use the following commands:
# touch /home/aquota.user (to create quota files in file system)
# mount -vo remount /home (to remount)
quotacheck -vgum /vg_ayk00-lv_home /home (to create the quota index)
But when i use the quotacheck command a message is displayed:
-cannot start given mount point vg_ayk00-lv_home /home. no such file or directory
-No correct mount point specify
-cannot initialize the mountpoint scan

i am new to linux. Please tell me where i am getting wrong.

first some introductory information (and no, you don't have to read everything - the intro, and skim some of it would likely be enough)

reference: http://tldp.org/LDP/intro-linux/html/

The fstab entry only tells the operating system what you want done during a boot. Here you are telling it that you want the logical partition (or volume as a virtual disk is thought of) mounted on the /home directory. (I will assume that the missing "/" at the beginning (and the missing "u" in usrquota) are typographic errors, the line should be "/dev/mapper/vg_ayk00-lv_home /home ext4 defaults,usrquota 1 1"). This is assuming the volume has a filesystem on it.

Assuming this has worked, the quotacheck commond to use would be "quotacheck -c /home" or "quotacheck -vcum /home". You would not be using the "g" option as you did not enable group quotas in the fstab file (it would be "usrquota,grpquota" in the fstab line if you want both).

reference: https://www.centos.org/docs/5/html/D...sk-quotas.html

when i use quotachek -vagum command
a following error occur:
quotacheck:cannot guess the format from filename on /dev/mapper/vg_ayk00-lv_home please specify thr formate on commandline.
quotacheck:cannot find the filesystem to check or file system not mounted with quota option.

Please tell me where i am getting wrong.

Sounds like the the filesystem isn't mounted properly.

What does "mount" list?