[Bug-tar] file changed as we read it

[Chuck Hamilton]

I'm sure this question as been asked before but googling has not turned
up much useful information about what causes it and how to ignore or
prevent it.

I'm running gnu tar version 1.20 on Solaris 10. I am tarring about 20
file each about 2g in size. If I run this process during the day it
completes with a 0 exit code. If I run it exists with a non-zero exit
code and reports "file changed as we read it". Inspecting whats in the
archive reveals that none of the files' contents changed. My question is
why am I getting this error and how do I ignore it.

I do know that the o/s backups (using net backup) are hitting the same
directory at night while the tar command is still running and I
*suspect* that the warning is related to this, but now knowing what tar
thinks is changing, I can't prove it. 

TIA