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тАО10-11-2011 11:36 AM
тАО10-11-2011 11:36 AM
df command hangs
Hello, I have one filesystems which ocasionally boasts a 10 second delay with the df command. there are no other (of 45) filesystems. I'm in search of better or more troubleshooting techniques and commands to determine the casue of the dealy.
you can see here, I have a delay:
[root@umndapp55 log]# time df /plnk/tlg/tlg2
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/vx/dsk/umndapp55_plnkts2dg/plnk_tlg_tlg2
28288000 88596 26437043 1% /plnk/tlg/tlg2
real 0m10.001s
user 0m0.000s
sys 0m0.001s
system info:
[root@umndapp55 log]# uname -a ; uptime ; date ;cat /etc/redhat-release
Linux umndapp55 2.6.18-164.el5 #1 SMP
Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
13:31:41 up 16 days, 10:36, 19 users, load average: 0.57, 0.72, 0.72
Tue Oct 11 13:31:41 CDT 2011
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
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тАО10-11-2011 09:59 PM
тАО10-11-2011 09:59 PM
Re: df command hangs
So df is only slow towards /plnk/tlg/tlg2
but not to any of the other (45??) file systems?
Then I'd wonder what kind of file system is on this disk.. and what kind of underlying disks, controller, server, etc.
iostat (check load on the disk)
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тАО10-17-2011 03:57 AM
тАО10-17-2011 03:57 AM
Re: df command hangs
umount and fsck the file system. Check if there are there any processes heavily using that disk (sar), SAN, connections.