Error Message

Jun 20 21:06:33 systemA kernel: vxdclid[89821]: segfault at 20 ip 00007f5cdbba18b6 sp 00007f5cd15bb760 error 4 in libvxdcli.so[7f5cdbb90000+43000]
 

vxdclid is coredumping when attempting to capture the stats for the volumes and disks. 

A new vxdclid plugin has been created to fix this issue and can be installed using the following steps:

1. Stop the dclid process:
/opt/VRTSsfmh/etc/vxdcli.sh stop

2. Confirm that the vxdclid process is not running in the ps -ef output

3. Take the backup of old " libvxlistsf_s.so " file
cp /opt/VRTSsfmh/plugins/vxlist/server/742/libvxlistsf_s.so to /opt/VRTSsfmh/plugins/vxlist/server/742/libvxlistsf_s.so_orig

4. Copy the new "libvxlistsf_s.so" file to the MH and replace the original plugin.

For example if the plugin had been copied to /var/tmp, we would do:

cp /var/tmp/libvxlistsf_s.so to /opt/VRTSsfmh/plugins/vxlist/server/742/

5. Start the dclid process:

/opt/VRTSsfmh/etc/vxdcli.sh start

6. Confirm that the vxdclid process is seen in the ps -ef output.

7. Run the '/opt/VRTSsfmh/bin/vxlist' command and confirm that vxdclid doesn't coredump.

8. Monitor the system for 1-2 hrs and if no further vxdclid coredumps are encountered during this time, then the plugin has resolved the issue.

 

Additionally the deployment tool which can be used to install a plugin on multiple MHs from the VIOM CMS has been updated to include this plugin.  

 

Please contact Veritas Technical Support if encountering this vxdclid coredump.
 

vxdclid coredumping every 30mins on VIOM 7.4.2.200 MHs running VxVM 7.4.2.1500/rhel7 and VxVM 7.4.2.1400/rhel8. The following stack is seen: (gdb) bt
#0 0x00007faf7d27b387 in raise () from /lib64/libc.so.6
#1 0x00007faf7d27ca78 in abort () from /lib64/libc.so.6
#2 0x00007faf7d2bded7 in __libc_message () from /lib64/libc.so.6
#3 0x00007faf7d2c6299 in _int_free () from /lib64/libc.so.6
#4 0x00007faf759a5fd6 in stats_free (rs=0x7faf6000a2d0) at vxbridge/common/logstats.c:111
#5 0x00007faf759a6056 in map_stats_free (ptr=0x7faf6000a2d0) at vxbridge/common/logstats.c:124
#6 0x00007faf7ee99519 in rb_destroy (aMap=0x7faf60025d40) at rbtree.c:518
#7 0x00007faf7ee9a17c in vx_map_destroy (aMap=0x7faf60025d40) at rbtree.c:1402
#8 0x00007faf759a7285 in logstats_work (db=0x7faf75cf3880 <_curDB>) at vxbridge/common/logstats.c:622
#9 0x00007faf759a7504 in logstats_thread (unused=0x0) at vxbridge/common/logstats.c:716
#10 0x00007faf7d61aea5 in start_thread () from /lib64/libpthread.so.0
#11 0x00007faf7d34396d in clone () from /lib64/libc.so.6

JIRA: STESC-6044 JIRA: STESC-6047