XFS - Revision history

Glenn: +cat

2011-10-21T19:03:34Z

+cat

81.52.144.1 at 16:11, 26 October 2007

2007-10-26T16:11:57Z

81.52.144.1 at 16:03, 26 October 2007

2007-10-26T16:03:43Z

82.69.161.137 at 12:49, 3 October 2007

2007-10-03T12:49:43Z

82.69.161.137 at 12:44, 3 October 2007

2007-10-03T12:44:08Z

82.69.161.137 at 12:41, 3 October 2007

2007-10-03T12:41:17Z

82.69.161.137 at 12:37, 3 October 2007

2007-10-03T12:37:21Z

82.69.161.137 at 12:35, 3 October 2007

2007-10-03T12:35:41Z

82.69.161.137: New page: So, you use the lovely XFS file system, but those meanies at linux-vserver have told you it's not supported. :) No problems. To get the same sort of effect as dlimits, while using the XFS...

2007-10-03T12:35:01Z

New page: So, you use the lovely XFS file system, but those meanies at linux-vserver have told you it's not supported. :) No problems. To get the same sort of effect as dlimits, while using the XFS...

New page

So, you use the lovely XFS file system, but those meanies at linux-vserver have told you it's not supported. :)
No problems.

To get the same sort of effect as dlimits, while using the XFS file system, you can use Project Quotas.

Let's say we want to limit /vserver/foo to 5G of space.

1. Edit /etc/fstab, and put prjquota as an option for /vserver, and reboot. (I don't think -o remount works)
2. echo "1235:/vservers/foo" >> /etc/projects (I use the context for the project ID number)
3. echo "foo:1235" >> /etc/projid (This is just so you can refer to a project by name)

Now we just set up the quota....

4. xfs_quota -x -c 'project -s foo' /vserver

And set our limits on it.

5. xfs_quota -x -c 'limit -p bhard=5G foo' /vserver

Voila. Vservers with XFS.

You can check the usage, etc with:

<pre>
# xfs_quota -x -c 'report' /home
Project quota on /home (/dev/cciss/c0d0p7)
Blocks
Project ID Used Soft Hard Warn/Grace
---------- --------------------------------------------------
foo 3002840 0 5242880 00 [--------]
....
</pre>

It does work, but df -h doesn't show the limit in the vserver. I'm not sure how users are meant to see how close they are to the limit. I shall investigate, and if I work it out, come back here.

← Older revision		Revision as of 19:03, 21 October 2011
Line 43:		Line 43:
	/dev/hdv1 5.0G 3.0G 17G 21% /		/dev/hdv1 5.0G 3.0G 17G 21% /
	</pre>		</pre>
		+
		+	[[Category:Documentation]]

@@ Line 11: / Line 11: @@
 </pre>
-prjquota requires <*> Virtual Root device support in Device Drivers, Block Devices
+Warning: XFS: cannot mount with both project and group quota
 <pre>echo "1235:/vservers/foo" >> /etc/projects</pre>(I use the context for the project ID number)

@@ Line 10: / Line 10: @@
 /dev/cciss/c0d0p7       /vserver           xfs     noatime,prjquota        0 0
 </pre>
 <pre>echo "1235:/vservers/foo" >> /etc/projects</pre>(I use the context for the project ID number)
 <pre>echo "foo:1235" >> /etc/projid</pre>(This is just so you can refer to a project by name)

@@ Line 9: / Line 9: @@
 <pre># grep prjquota /etc/fstab
 /dev/cciss/c0d0p7       /vserver           xfs     noatime,prjquota        0 0
 </pre>
 <pre>echo "1235:/vservers/foo" >> /etc/projects</pre>(I use the context for the project ID number)
@@ Line 20: / Line 19: @@
 And set our limits on it. (bhard = blocks hard, bsoft = blocks soft)
-<pre>xfs_quota -x -c 'limit -p bsoft=4.8G bhard=5G foo' /vserver</pre>
+<pre>xfs_quota -x -c 'limit -p bsoft=4800M bhard=5G foo' /vserver</pre>
 Voila. Vservers with XFS.

@@ Line 18: / Line 18: @@
 <pre>xfs_quota -x -c 'project -s foo' /vserver</pre>
-And set our limits on it.
+And set our limits on it. (bhard = blocks hard, bsoft = blocks soft)
-<pre>xfs_quota -x -c 'limit -p bhard=5G foo' /vserver</pre>
+<pre>xfs_quota -x -c 'limit -p bsoft=4.8G bhard=5G foo' /vserver</pre>
 Voila. Vservers with XFS.
@@ Line 36: / Line 36: @@
 </pre>
-It does work, but df -h doesn't show the limit in the vserver. I'm not sure how users are meant to see how close they are to the limit. I shall investigate, and if I work it out, come back here.
+It does work, but df -h doesn't show the limit properly in the vserver.

@@ Line 26: / Line 26: @@
 You can check the usage, etc with:
-<pre>
+<pre># xfs_quota -x -c 'report' /vserver
-# xfs_quota -x -c 'report' /home
+Project quota on /vserver (/dev/cciss/c0d0p7)
-Project quota on /home (/dev/cciss/c0d0p7)
                                 Blocks
 Project ID       Used       Soft       Hard    Warn/Grace
 ---------- --------------------------------------------------
-foo           3002840          0    5242880    00 [--------]
+foo          10002856    4915200    5242880     00 [--none--]
 ....
 </pre>

@@ Line 6: / Line 6: @@
 Let's say we want to limit /vserver/foo to 5G of space.
-. Edit /etc/fstab, and put prjquota as an option for /vserver, and reboot. (I don't think -o remount works)
+Edit /etc/fstab, and put prjquota as an option for /vserver, and reboot. (I don't think -o remount works). It should look like this:
-. echo "1235:/vservers/foo" >> /etc/projects (I use the context for the project ID number)
+<pre># grep prjquota /etc/fstab
-. echo "foo:1235" >> /etc/projid (This is just so you can refer to a project by name)
+/dev/cciss/c0d0p7       /vserver           xfs     noatime,prjquota        0 0
 Now we just set up the quota....