Difference between revisions of "Standard non-shared quota"
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(→Finishing the setup) |
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Edit your /etc/fstab if this is not the case. You don't need to actually enable quotas in the host, but you at least need the usrquota and grpquota mount options. | Edit your /etc/fstab if this is not the case. You don't need to actually enable quotas in the host, but you at least need the usrquota and grpquota mount options. | ||
+ | |||
+ | Something like this will work on host machine: | ||
+ | |||
+ | /etc/fstab | ||
+ | <pre> | ||
+ | /dev/md0 /var/lib/vservers reiserfs defaults,usrquota,grpquota 0 0 | ||
+ | </pre> | ||
+ | |||
Then, use ''vrsetup'' to tell the kernel what block device you want to handle quota for: | Then, use ''vrsetup'' to tell the kernel what block device you want to handle quota for: | ||
Line 27: | Line 35: | ||
3. Copy the vroot device which we setup earlier to the vserver: | 3. Copy the vroot device which we setup earlier to the vserver: | ||
− | cp -af /dev/ | + | cp -af /dev/vroot0 /vservers/<name>/dev/hdv1 |
=== Finishing the setup === | === Finishing the setup === | ||
Line 46: | Line 54: | ||
− | <b> | + | |
+ | <b>"Setquota / " problem:</b> | ||
<pre> | <pre> | ||
Changing disk quota .. | Changing disk quota .. | ||
.. Administration user failed! : setquota: Mountpoint (or device) / not found. setquota: Not all specified mountpoints are using quota. at ../web-lib-funcs.pl line 1323. | .. Administration user failed! : setquota: Mountpoint (or device) / not found. setquota: Not all specified mountpoints are using quota. at ../web-lib-funcs.pl line 1323. | ||
+ | |||
+ | or: | ||
+ | |||
+ | Failed to create virtual server : setquota: Mountpoint (or device) / not found. setquota: Not all specified mountpoints are using quota. | ||
</pre> | </pre> | ||
Line 76: | Line 89: | ||
Alternatively add the vrsetup line to the '''/etc/vservers/<vserver-name>/scripts/initialize''' script: | Alternatively add the vrsetup line to the '''/etc/vservers/<vserver-name>/scripts/initialize''' script: | ||
<pre> | <pre> | ||
− | + | # set quota | |
+ | /bin/rm -f /var/lib/vservers/<vserver-name>/dev/hdv1 | ||
+ | /usr/sbin/vrsetup /dev/vroot0 [partition] #/dev/md0 or smth... | ||
+ | /bin/cp -fa /dev/vroot0 /var/lib/vservers/<vserver-name>/dev/hdv1 | ||
</pre> | </pre> | ||
and the vrsetup detach command into '''/etc/vservers/<vserver-name>/scripts/postpost-stop''': | and the vrsetup detach command into '''/etc/vservers/<vserver-name>/scripts/postpost-stop''': | ||
<pre> | <pre> | ||
− | + | #remove quota | |
+ | /usr/sbin/vrsetup -d /dev/vroot0 | ||
</pre> | </pre> | ||
+ | |||
+ | |||
+ | == New Quotatool since debian squeeze == | ||
+ | |||
+ | |||
+ | Since the debian squeeze the quota tool are shipped with a new version where the setup of /dev/hdvx will not work. To make it work with those tools you must: | ||
+ | |||
+ | - never use hide_mounts capabilities | ||
+ | - name the virtual device inside the guest the same name as the real one. | ||
+ | |||
+ | So the mtab should have the real device name and /dev/vrootx should be copied to /vservers/guestxx/dev/realdevicename and not /dev/hdvx | ||
+ | |||
+ | |||
+ | |||
+ | [[Category:Configuration]] |
Latest revision as of 11:07, 7 January 2012
Want to enable quotas from within a vserver, nothing special, just plain old and good quota support? Then this might help you! First things first, you will need a vserver enabled kernel that you have made working and you need to add vroot support to it (In menuconfig it is in Device Drivers → Block Devices → Virtual Root device support).
After booting on the vroot enabled vserver kernel, you should have a directory /dev/vroot/ with 8 vroot devices (0-7) you can use to set up your quota, if you don't, then you may make them by mknod /dev/vroot/n b 4 n (where n can be from 0 to 7). If your Linux distribution uses udev, these will be at /dev/vroot[0-7] instead.
Contents |
[edit] Initial Setup
First, ensure that the filesystem where your vservers are located on the host has quota options enabled: usrquota,grpquota
Edit your /etc/fstab if this is not the case. You don't need to actually enable quotas in the host, but you at least need the usrquota and grpquota mount options.
Something like this will work on host machine:
/etc/fstab
/dev/md0 /var/lib/vservers reiserfs defaults,usrquota,grpquota 0 0
Then, use vrsetup to tell the kernel what block device you want to handle quota for:
vrsetup /dev/vroot0 [partition]
Where [partition] is your /vservers partition. For example, this could be something like /dev/hda5 if you're just using standard partitioning, or something like /dev/lvm/vserver0 if you're using LVM.
[edit] Setting Up Vservers For Quota
Setting up the vserver for quota is straight forward: (you need util-vserver 30.208 or newer)
1. Create a default mtab for the guest. To do this, add:
/dev/hdv1 / ufs defaults,usrquota,grpquota 0 0
to /etc/vservers/<name>/apps/init/mtab
Note: Replace ufs
with xfs
if you're using an XFS file-system.
2. Add the quota capability to the guest vserver. Add:
quota_ctl
to /etc/vservers/<name>/ccapabilities
3. Copy the vroot device which we setup earlier to the vserver:
cp -af /dev/vroot0 /vservers/<name>/dev/hdv1
[edit] Finishing the setup
1. Start your guest.
2. Inside the guest, make sure the mtab entry is present:
grep /dev/hdv1 /etc/mtab
/dev/hdv1 / ufs defaults,usrquota,grpquota 0 0
Add to /etc/rc.local
/sbin/quotacheck -maugv /sbin/quotaon /dev/hdv1
"Setquota / " problem:
Changing disk quota .. .. Administration user failed! : setquota: Mountpoint (or device) / not found. setquota: Not all specified mountpoints are using quota. at ../web-lib-funcs.pl line 1323. or: Failed to create virtual server : setquota: Mountpoint (or device) / not found. setquota: Not all specified mountpoints are using quota.
Solution: Virtualmin will fail setting user quota as it requests / instead of /dev/hdv1 partition, so if you are running virtualmin - create wrapper for setquota program:
if [ -f /usr/sbin/setquota-old ] then echo "Nothing to do." else mv /usr/sbin/setquota /usr/sbin/setquota-old cat > /usr/sbin/setquota <<EOF #!/bin/bash var=$* /usr/sbin/setquota-old ${var/\/}/dev/hdv1 EOF chmod +x /usr/sbin/setquota fi
[edit] Save settings for reboot
To have setting persist on reboot, put vrsetup line into /etc/init.d/util-vserver start function, so after reboot vroot device get setup before it start.
Alternatively add the vrsetup line to the /etc/vservers/<vserver-name>/scripts/initialize script:
# set quota /bin/rm -f /var/lib/vservers/<vserver-name>/dev/hdv1 /usr/sbin/vrsetup /dev/vroot0 [partition] #/dev/md0 or smth... /bin/cp -fa /dev/vroot0 /var/lib/vservers/<vserver-name>/dev/hdv1
and the vrsetup detach command into /etc/vservers/<vserver-name>/scripts/postpost-stop:
#remove quota /usr/sbin/vrsetup -d /dev/vroot0
[edit] New Quotatool since debian squeeze
Since the debian squeeze the quota tool are shipped with a new version where the setup of /dev/hdvx will not work. To make it work with those tools you must:
- never use hide_mounts capabilities - name the virtual device inside the guest the same name as the real one.
So the mtab should have the real device name and /dev/vrootx should be copied to /vservers/guestxx/dev/realdevicename and not /dev/hdvx