setquota -u size1 10240 8192 0 0 mntpart5setquota Cannot find any quota file to work onsetquota Not all specified mountpoints are using quota

This error message indicates that there is no existing quota file on the specified mount point /mnt/part5, and that not all specified mount points are using quota.

To resolve this issue, you need to make sure that quotas are enabled on the file system where /mnt/part5 is mounted. You can check if quotas are enabled by running the following command:

mount | grep /mnt/part5

If quotas are not enabled, you need to enable them by adding the usrquota and grpquota options to the file system's mount options in /etc/fstab. For example:

/dev/sda5 /mnt/part5 ext4 defaults,usrquota,grpquota 0 0

Once quotas are enabled, you can create a new quota file on the file system by running the quotacheck command:

quotacheck -c /mnt/part5

After the quota file has been created, you can set the user quota for size1 by running the setquota command:

setquota -u size1 10240 8192 0 0 /mnt/part5