I have been running two legacy Redhat 6.x web servers for several years. The apache httpd processes started to go into device wait state the last few days on one of the servers, the other server is fine, both are configured pretty much the same. I tracked this down to the web server trying to stat /afs/.htaccess. If I try to do an ls in /afs or cat /afs/.htaccess which does not exist, the commands take a long time to complete and first go into device wait state, it can take several minutes or they may hang indefinitely. The afs file system seems to be working fine, just accessing under /afs is the problem. On other Redhat 6.x systems accessing /afs is fast and have no problems.
I am running afsd with: /usr/vice/etc/afsd -dynroot -fakestat-all -afsdb Note I tried fakestat-all to see if that would help, I have been running just -fakesat, our db servers have afsdb records. I removed all cells accept for our cell in CellServDB so only have this: % pwd /afs % ls -l total 4 lrwxr-xr-x 1 root root 10 Dec 31 1969 cs -> cs.unc.edu/ drwxr-xr-x 8 root root 2048 Mar 6 2015 cs.unc.edu/ lrwxr-xr-x 1 root root 10 Dec 31 1969 unc -> cs.unc.edu/ I re-formatted the /usr/vice/cache partition and that did not help. I cannot find any hardware problems, no clues in the syslog or on the console, the system disk including the cache is on a raid1/mirror disk. This is a Dell server and I run Dell OpenMange which is really good at reporting system and especially disk errors. I am running the same afsd verison on our remaining rhel 6.x servers: % fs version openafs 1.6.22.2 Distributor ID: RedHatEnterpriseWorkstation Release: 6.10 The problem is intermittent but goes into device wait most of the time, for example the first time ran fine, the second time it took 14.96 seconds. % time ls -l total 4 lrwxr-xr-x 1 root root 10 Dec 31 1969 cs -> cs.unc.edu drwxr-xr-x 8 root root 2048 Mar 6 2015 cs.unc.edu lrwxr-xr-x 1 root root 10 Dec 31 1969 unc -> cs.unc.edu 0.000u 0.000s 0:00.00 0.0% 0+0k 0+0io 0pf+0w % time ls -l total 4 lrwxr-xr-x 1 root root 10 Dec 31 1969 cs -> cs.unc.edu drwxr-xr-x 8 root root 2048 Mar 6 2015 cs.unc.edu lrwxr-xr-x 1 root root 10 Dec 31 1969 unc -> cs.unc.edu 0.000u 0.000s 0:14.96 0.0% 0+0k 0+0io 0pf+0w Thanks for any help or ideas to try. -- John W. Sopko Jr. University of North Carolina Computer Science Dept CB 3175 Chapel Hill, NC 27599-3175 Fred Brooks Building; Room 140 Computer Services Systems Specialist email: sopko AT cs.unc.edu phone: 919-590-6144 _______________________________________________ OpenAFS-info mailing list OpenAFS-info@openafs.org https://lists.openafs.org/mailman/listinfo/openafs-info