Counters in df, du

[Alexey Vlasov <renton@renton.name>]

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Hi.

Periodically there is an overflow on /tmp on my boxes, and I can't find
the reaason why. May be it isn't a bug in tmpfs and you can help me find
the reason, and if it is an error, I hope you will help me to eliminate
it.

I know that df, du can show different values if some files were deleted,
but the processes which opened these files are still acting.

Well now I see this picture on one of my boxes. Below I post the results
of how I was trying to find what was /tmp full of.

# df -h /tmp
Filesystem            Size  Used Avail Use% Mounted on
tmpfs                 4.1G  3.3G  762M  82% /tmp

# du -hs /tmp
518M    /tmp

# lsof /tmp | awk '{if ($7 != 0) print$0}'
(in attach)

I still don't see any files taking 3G. Now I know only one solution
mount/remount /tmp.

-- 
BRGDS. Alexey Vlasov.

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# lsof /tmp | awk '{if ($7 != 0) print$0}'
COMMAND     PID                           USER   FD   TYPE             DEVICE  SIZE      NODE NAME
authdaemo  6555                           root    5u  unix 0xffff81030b8c2840       281375180 /var/lib/courier/authdaemon/socket.tmp
authdaemo  6558                           root    5u  unix 0xffff81030b8c2840       281375180 /var/lib/courier/authdaemon/socket.tmp
authdaemo  6559                           root    5u  unix 0xffff81030b8c2840       281375180 /var/lib/courier/authdaemon/socket.tmp
authdaemo  6560                           root    5u  unix 0xffff81030b8c2840       281375180 /var/lib/courier/authdaemon/socket.tmp
authdaemo  6561                           root    5u  unix 0xffff81030b8c2840       281375180 /var/lib/courier/authdaemon/socket.tmp
authdaemo  6562                           root    5u  unix 0xffff81030b8c2840       281375180 /var/lib/courier/authdaemon/socket.tmp
mysqld    22905                          mysql    6u   REG               0,13    20 663938322 /tmp/ib1oZTSZ (deleted)
mysqld    22905                          mysql    8u   REG               0,13 84773 663938424 /tmp/ibRcarbD (deleted)