There are 6000 or more users in my mail system,I limit everyuser space is 5MB by quota command,but I found some of the user out of quota control,like:

quota tom
Disk quotas for user tom (uid 6957): none

in control user:
Disk quotas for user fiona (uid 5637):
Filesystem blocks quota limit grace files quota limit grace
/dev/sda2 92 5120 6400 17 0 0

And quotacheck command show me these message:

/sbin/quotacheck -vgufi /dev/sda2
quotacheck: WARNING - Quota file info was corrupted.
Setting grace times and other flags to default values.
Assuming number of blocks is 321.
quotacheck: Block 279: Duplicated entries.
quotacheck:
Found more structures for ID 0. Values: BHARD: 0/278 BSOFT: 0/278 IHARD: 0/278 ISOFT: 0/278
Should I use new values [n]:

whatever "yes" or "no"it will show:

quotacheck: Block 287: Reference to illegal block 360448
quotacheck: Block 360448 is truncated.
quotacheck: Block 287: Reference to illegal block 5784
quotacheck: Block 5784 is truncated.
quotacheck: Block 287: Reference to illegal block 6400
quotacheck: Block 6400 is truncated.
quotacheck: Block 287: Reference to illegal block 5120
quotacheck: Block 5120 is truncated.
quotacheck: Block 287: Reference to illegal block 5091328

and I found repquota command report some surprising messages:

#280 +- 1174405121 280 280 none 280 280 280 none
#281 ++ 1178599425 281 281 none 281 280 281 none
#281 ++ 1166016513 282 282 none 282 282 281 none
#282 +- 1182793729 282 282 none 282 282 282 none
#283 +- 1186988033 281 283 none 283 283 283 none
#283 +- 1191182337 283 283 none 283 283 283 none
#284 +- 1186988033 284 284 none 284 284 284 none
#284 +- 1195376641 280 285 none 284 284 284 none
#278 +- 1195376641 278 285 none 280 285 285 none
#285 +- 1199570945 285 285 none 278 285 285 none
#286 +- 1199570945 278 286 none 286 286 286 none
#286 ++ 1203765249 281 287 none 287 281 287 none
#287 ++ 1203765249 287 280 none 287 287 280 none
root -- 1 278 0 0 0 0 none
root +- 1186988032 0 278 0 0 0
root -- 1199570944 0 0 0 286 0
.
.
.
#226 -- 1212153857 0 0 0 0 0
root -- 0 0 0 300 0 0
Segmentation fault

Thank you for your reading my problem,what's happen about my quota system?How to fix it?

have any idea?

up

I don't have an answer for you but this is more of a reminder that you should give a little more time before bumping your threads. Your question isn't very common and is more complicated which will probably take a little more time before someone with an answer might be of some help.
Usually you might want to wait 24 hours before bumping your thread, not several hours each time as most here are answering in their free time.
At some extent, it might even go unanswered which hopefully won't be the case as were all here to help one another out.

Regards and good luck in finding a solution to your question/problem.

Sorry sir,thanks for your pay attention to me.
I have really no idea on it,I think maybe I had to reinstall system and recover data finally.....

thanks all reading people.

I found the problem:/var partition is full.........