ok. Let me look for a patch that will let us look into the stack of the spinning process. Will email you the link.
Nuno Fernandes wrote: > Hello, > > yes.. when this situation happens there is allways a process spinning > (running > at 100%cpu). We can't kill it even with kill -9 > > Kernel = 2.6.9-48.ELxenU > OCFS2 = 1.2.5 > > OCFS2 Node Manager 1.2.5 Tue Apr 10 12:29:33 EDT 2007 (build > 9e5f332181e8ebfad464946bcc4888af) > OCFS2 DLM 1.2.5 Tue Apr 10 12:29:33 EDT 2007 (build > e2556a71429f31033b275dff4b5594aa) > OCFS2 DLMFS 1.2.5 Tue Apr 10 12:29:33 EDT 2007 (build > e2556a71429f31033b275dff4b5594aa) > > Thanks for any info, > Nuno Fernandes > > On Monday 07 April 2008 18:17:09 Sunil Mushran wrote: > >> Are any processes spinning during this time? >> As in, does top show any process eating up cpu. >> >> The said hangs are in the generic layer and could be due to a >> spinning process not releasing a lock. I can see some processes >> in R state but can't say for sure that they are spinning or not. >> >> ocfs2/kernel versions? >> >> Sunil >> >> Nuno Fernandes wrote: >> >>> Hello, >>> >>> The sysrq is attached. >>> >>> The processlist is: >>> >>> ... >>> 17280 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 6373 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 16561 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 6380 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 17093 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 7649 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 16566 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 7772 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 17829 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 7905 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 17233 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 7924 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 16477 ? R 343:20 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 7986 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 16565 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 8007 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 30015 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 8066 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 17236 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi 8070 ? >>> S 0:00 \_ /usr/sbin/httpd >>> 16480 ? D 0:00 | >>> \_ /usr/bin/perl -w >>> /storage/webhosting/site/public_html/alojados/site/MT/come2x.cgi ... >>> >>> Thanks for any info, >>> Best regards, >>> Nuno Fernandes >>> >>> On Friday 04 April 2008 19:21:05 Sunil Mushran wrote: >>> >>>> No busy locks. The hang is not because of o2dlm. >>>> >>>> Do a kernel stack dump. echo t >/proc/sysrq-trigger >>>> That should tell us where the process is stuck in the kernel. >>>> >>>> Nuno Fernandes wrote: >>>> >>>>> On Friday 04 April 2008 18:40:42 Sunil Mushran wrote: >>>>> >>>>>> debugfs.ocfs2 -R "fs_locks" /dev/sdX >/tmp/out >>>>>> >>>>> Hi, >>>>> >>>>> I happened again. Attached i send the output. >>>>> >>>>> Thanks for any info, >>>>> Best regards, >>>>> Nuno Fernandes >>>>> >>>>> ----------------------------------------------------------------------- >>>>> - >>>>> >>>>> _______________________________________________ >>>>> Ocfs2-users mailing list >>>>> [email protected] >>>>> http://oss.oracle.com/mailman/listinfo/ocfs2-users >>>>> >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Ocfs2-users mailing list >>> [email protected] >>> http://oss.oracle.com/mailman/listinfo/ocfs2-users >>> > > > > _______________________________________________ > Ocfs2-users mailing list > [email protected] > http://oss.oracle.com/mailman/listinfo/ocfs2-users > _______________________________________________ Ocfs2-users mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-users
