There is a defect in bpbkar that causes the process to hang when is tries to open /dev/ttyp[0-9]. The reason is VxFS 5.0 “extended attributes”. Bpbkar first checks file system type and version, if VxFS 5.0 is detected, then a flag is set and “extended attributes” will be verified for each file. HP-UX treats /dev/ttyp as CHR so when bpbkar check the extended attributes, another call is made and here the “open” command hangs.
Symptoms:
The backup will exit with status code 13 - File read fail and the and the detailed view will have a message saying : socket read failed : errno = 62 - Timer expired.
Identify:
You can verify the hang by:
touch /usr/openv/netbackup/bpbkar_to_tr
mkdir /usr/openv/netbackup/log/bpbkar
Add VERBOSE to /usr/openv/netbackup/bp.conf
then run the following command :
/usr/openv/netbackup/bin/bpbkar -nocont /dev > /dev/null
Inspect /usr/openv/netbackup/logs/bpbkar/{date}.log The last line shoud be /dev/ttyp{somthing}.
Workaround:
Add IGNORE_XATTR = YES to bp.conf or contact Symantec support and refer to Etrack 1668477 for a fix.
Formal resolution:
The formal resolution is scheduled for NBU 6.5.5
Credits:
A big "thank you" goes to Carlos Carreo from Symantec Support.
Update: There is a Technote of the of the same issue : Backup fails with status 13 when bpbkar hangs processing /dev files on VxFS 5.0
Update: There is a Technote of the of the same issue : Backup fails with status 13 when bpbkar hangs processing /dev files on VxFS 5.0
