Comments on: Per directory quota: not a dream http://www.held.org.il/blog/?p=80 Linux, FOSS, Web and more: a buzzword-free blog Fri, 03 Sep 2010 12:41:19 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: August Sodora http://www.held.org.il/blog/?p=80&cpage=1#comment-237 August Sodora Tue, 17 Aug 2010 02:00:04 +0000 http://www.held.org.il/blog/?p=80#comment-237 I recently implemented a little project to accomplish this. It uses FUSE and provides a transparent filesystem layer which should accept any directory on a POSIX-compliant filesystem as a basedir and will expose a quota-enabled filesystem through its mountpoint. Quotas can be set on arbitrary files or directories and since they are only represented as xattrs (user.quota), there can be a very very large number of quotas for a single mountpoint, unlike other solutions which typically involve creating virtual block devices. I've put it up on google code if anybody is curious http://code.google.com/p/fusequota/ Any feedback would be greatly appreciated! I recently implemented a little project to accomplish this. It uses FUSE and provides a transparent filesystem layer which should accept any directory on a POSIX-compliant filesystem as a basedir and will expose a quota-enabled filesystem through its mountpoint. Quotas can be set on arbitrary files or directories and since they are only represented as xattrs (user.quota), there can be a very very large number of quotas for a single mountpoint, unlike other solutions which typically involve creating virtual block devices. I’ve put it up on google code if anybody is curious http://code.google.com/p/fusequota/

Any feedback would be greatly appreciated!

]]> By: Ben Finney http://www.held.org.il/blog/?p=80&cpage=1#comment-57 Ben Finney Fri, 03 Jul 2009 01:36:46 +0000 http://www.held.org.il/blog/?p=80#comment-57 > Of course, you can probably also create a loopback filesystem of fixed size. Then it doesn’t matter what the filesystem is, for those who prefer to stick with ext3 or something. Obviously then though, you lose the disc space whether you use it or not. I think this would be better achieved using <a href="http://en.wikipedia.org/wiki/Logical_Volume_Manager_(Linux)" rel="nofollow">LVM</a>. Set the storage device as a physical volume (PV), with one logical group (LG); then carve off each logical volume (LV) with as much space as you want from that group. You get the same “space is allocated to that volume whether you use it or not” property, but you are using a mature system (LVM) which is well-supported by standard tools for adding, removing, re-sizing, and other management. > Of course, you can probably also create a loopback filesystem of fixed size. Then it doesn’t matter what the filesystem is, for those who prefer to stick with ext3 or something. Obviously then though, you lose the disc space whether you use it or not.

I think this would be better achieved using LVM. Set the storage device as a physical volume (PV), with one logical group (LG); then carve off each logical volume (LV) with as much space as you want from that group.

You get the same “space is allocated to that volume whether you use it or not” property, but you are using a mature system (LVM) which is well-supported by standard tools for adding, removing, re-sizing, and other management.

]]> By: thehumanelement http://www.held.org.il/blog/?p=80&cpage=1#comment-56 thehumanelement Sat, 21 Feb 2009 13:00:59 +0000 http://www.held.org.il/blog/?p=80#comment-56 I was interested in doing this too. Of course, you can probably also create a loopback filesystem of fixed size. Then it doesn't matter what the filesystem is, for those who prefer to stick with ext3 or something. Obviously then though, you lose the disc space whether you use it or not. I was interested in doing this too. Of course, you can probably also create a loopback filesystem of fixed size. Then it doesn’t matter what the filesystem is, for those who prefer to stick with ext3 or something. Obviously then though, you lose the disc space whether you use it or not.

]]> By: Oren http://www.held.org.il/blog/?p=80&cpage=1#comment-55 Oren Tue, 29 Jul 2008 06:02:54 +0000 http://www.held.org.il/blog/?p=80#comment-55 Unfortunately it is not possible with ext3 and most other filesystems.. Unfortunately it is not possible with ext3 and most other filesystems..

]]> By: Oded http://www.held.org.il/blog/?p=80&cpage=1#comment-54 Oded Tue, 29 Jul 2008 03:08:09 +0000 http://www.held.org.il/blog/?p=80#comment-54 Can you give instructions on how to do the same for Ext3 (for those of us that have left XFS back then and haven't looked back since ;-) )? Can you give instructions on how to do the same for Ext3 (for those of us that have left XFS back then and haven’t looked back since ;-) )?

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