processes stuck in D state
Zeev Fisher <[email protected]>
| Newsgroups | gmane.linux.admin.managers |
|---|---|
| Message-ID | <[email protected]> |
Hi! I got a continuos problem of unkillable processes stuck in D state ( uninterruptable sleep ) on my Linux servers. It happens randomly every time on other server ( all the servers are configured the same with 2.4.18-10 kernel ). Here's an example : root@lnx35 /]# ps -el|grep D F S UID PID PPID C PRI NI ADDR SZ WCHAN TTY TIME CMD 000 D 911 29327 1 0 75 0 - 9382 lock_p ? 00:00:00 calibre 000 D 894 30049 15854 0 75 0 - 8995 lock_p ? 00:00:01 calibrewb 000 D 894 30092 8661 0 75 0 - 8995 lock_p ? 00:00:01 calibrewb 000 D 894 29773 26052 0 75 0 - 8977 lock_p ? 00:00:01 calibrewb It was probably stuck while trying to get a lock (which was certainly free) on an NFS volume mounted from a Netapp server. Enabling debug mode on rpc ( echo '65535' >/proc/sys/sunrpc/rpc_debug ) didn't gave me any clue. Tracing the stucked process pid doesn't give any output. Those processes are there already few days and will stay there until next reboot. The load average is now 4 ( although the machine is 100% idle ) and the system seems to work fine. If other programs are started again they run and use the same mounts that the processes above are stuck on. Another detail is that those problems started when i added the 'intr' option to my nfs mounted fs but i'm not sure. Also, i can't easily check that since this problem is not reproducible. Has anyone noticed the same behavior ? Is this a well known problem ? Thanks for your help. -- Zeev Fisher - Unix System Administrator Marvell Semiconductor Israel Ltd Moshav Manof, D.N. Misgav 20184, ISRAEL Email - [email protected] Tel - + 972 4 9091402 Cell - + 972 54 995402 Fax - + 972 4 9091501 WWW Page: http://www.marvell.com ------------------------------------------------------------------------ This message may contain confidential, proprietary or legally privileged information. The information is intended only for the use of the individual or entity named above. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by telephone, or by e-mail and delete the message from your computer. _______________________________________________ LinuxManagers mailing list - http://www.linuxmanagers.org submissions: LinuxManagers-35TzE1X9F6582KRnZfj+bdi2O/[email protected] subscribe/unsubscribe: http://www.linuxmanagers.org/mailman/listinfo/linuxmanagers