[Lustre-discuss] Lustre Quota over Hard Limit

[Niu, Yawei]

Yes, the param of xxx.quota_type is obsolete from 2.4.

From: Chan Ching Yu Patrick [mailto:cychan at clustertech.com]
Sent: Wednesday, March 05, 2014 12:32 PM
To: Niu, Yawei
Cc: lustre-discuss at lists.lustre.org
Subject: Re: [Lustre-discuss] Lustre Quota over Hard Limit

Hi Niu,

I've enabled quota during formatting, do I still need to enable it by lctl?

[root at mds1 ~]# tunefs.lustre /dev/sda
checking for existing Lustre data: found
Reading CONFIGS/mountdata

   Read previous values:
Target:     data-MDT0000
Index:      0
Lustre FS:  data
Mount type: ldiskfs
Flags:      0x5
              (MDT MGS )
Persistent mount opts: user_xattr,errors=remount-ro
Parameters: mgsnode=192.168.122.240 at tcp<mailto:mgsnode=192.168.122.240 at tcp> mgsnode=192.168.100.100 at tcp1<mailto:mgsnode=192.168.100.100 at tcp1> mdt.quota_type=ug


   Permanent disk data:
Target:     data-MDT0000
Index:      0
Lustre FS:  data
Mount type: ldiskfs
Flags:      0x5
              (MDT MGS )
Persistent mount opts: user_xattr,errors=remount-ro
Parameters: mgsnode=192.168.122.240 at tcp<mailto:mgsnode=192.168.122.240 at tcp> mgsnode=192.168.100.100 at tcp1<mailto:mgsnode=192.168.100.100 at tcp1> mdt.quota_type=ug


[root at oss1 ~]# tunefs.lustre /dev/sda
checking for existing Lustre data: found
Reading CONFIGS/mountdata

   Read previous values:
Target:     data-OST0000
Index:      0
Lustre FS:  data
Mount type: ldiskfs
Flags:      0x2
              (OST )
Persistent mount opts: errors=remount-ro
Parameters: mgsnode=192.168.122.240 at tcp<mailto:mgsnode=192.168.122.240 at tcp> mgsnode=192.168.100.100 at tcp1<mailto:mgsnode=192.168.100.100 at tcp1> ost.quota_type=ug


   Permanent disk data:
Target:     data-OST0000
Index:      0
Lustre FS:  data
Mount type: ldiskfs
Flags:      0x2
              (OST )
Persistent mount opts: errors=remount-ro
Parameters: mgsnode=192.168.122.240 at tcp<mailto:mgsnode=192.168.122.240 at tcp> mgsnode=192.168.100.100 at tcp1<mailto:mgsnode=192.168.100.100 at tcp1> ost.quota_type=ug



On 03/05/2014 12:12 PM, Niu, Yawei wrote:

Did you enable block quota by 'lctl conf_param $fsname.ost.quota=ug"? You can check this in the "quota_slave/info" of each osd proc dir. (for instance, proc/fs/lustre/osd-ldiskfs/lustre-OST0000/quota_slave/info)



-----Original Message-----

From: lustre-discuss-bounces at lists.lustre.org<mailto:lustre-discuss-bounces at lists.lustre.org> [mailto:lustre-discuss-bounces at lists.lustre.org] On Behalf Of Chan Ching Yu Patrick

Sent: Wednesday, March 05, 2014 11:25 AM

To: lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>

Subject: [Lustre-discuss] Lustre Quota over Hard Limit



Hi,



I'm testing quota with latest maintenance release (Lustre 2.4.2).

I found that Lustre still allow the users to write the file over hard limit.



Let's see the example below. I've set 500MB soft limit and 530MB hard limit.

But I can write a 700MB file.



[patrick at client lustre]$ dd if=/dev/zero of=/lustre/file bs=1M count=700

700+0 records in

700+0 records out

734003200 bytes (734 MB) copied, 31.6627 s, 23.2 MB/s



[root at client lustre]# lfs quota -u patrick /lustre/ Disk quotas for user patrick (uid 500):

      Filesystem  kbytes   quota   limit   grace   files   quota

limit   grace

        /lustre/  716804* 500000  530000       -       1       0

0       -





Regards,

Patrick

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Chan Ching Yu, Patrick
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