QA output created by 436
expect only a few lines of diff output ...

--- bzip2 first volume ---
> pmdumplog ...
> pminfo ...
> pmprobe in the middle ...
> pmval & pmval -r ...
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin
> pmie ...

--- bzip2 last volume and use existing .9.bz2 in -a arg ---
> pmdumplog ...
> pminfo ...
> pmprobe in the middle ...
> pmval & pmval -r ...
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.9.bz2
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.9.bz2
> pmie ...

--- bzip2 middle volume and used existing .1 in -a arg ---
> pmdumplog ...
> pminfo ...
> pmprobe in the middle ...
> pmval & pmval -r ...
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.1
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.1
> pmie ...

--- bzip2 first, middle and last volume and use .meta in -a arg ---
> pmdumplog ...
> pminfo ...
> pmprobe in the middle ...
> pmval & pmval -r ...
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.meta
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.meta
> pmie ...

--- bzip2 first few, middle and last few volumes and use existing .7.bz2 in -a arg ---
> pmdumplog ...
> pminfo ...
> pmprobe in the middle ...
> pmval & pmval -r ...
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.7.bz2
< archive:   tmparch/mv-bigbin
---
> archive:   mv-bigbin.7.bz2
> pmie ...

--- some error cases ---
pminfo: Cannot open archive "mv-bigbin.10": No such file or directory
pmprobe: Cannot open archive "mv-bigbin.10": No such file or directory
pmval: Cannot open archive "mv-bigbin.10": No such file or directory
pmie: cannot open archive mv-bigbin.10
pmNewContext failed: No such file or directory
pminfo: Cannot open archive "mv-bigbin.10.bz2": No such file or directory
pmprobe: Cannot open archive "mv-bigbin.10.bz2": No such file or directory
pmval: Cannot open archive "mv-bigbin.10.bz2": No such file or directory
pmie: cannot open archive mv-bigbin.10.bz2
pmNewContext failed: No such file or directory
--- compressed empty data volume ---
pminfo: Cannot open archive "null": Empty archive log file
--- empty data volume pretending to be compressed ---
bzip2: Compressed file ends unexpectedly;
	perhaps it is corrupted?  *Possible* reason follows.
bzip2: Success
	Input file = ./null.0.bz2, output file = (stdout)
It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.
You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.
pminfo: Cannot open archive "null": Corrupted record in a PCP archive log
