[Help-tar] Re: multivolume extract from non-first archive

[Sam George]

Sergey Poznyakoff wrote:

> address@hidden:/
> >   10 # tar vx -M $(seq -f"--file=/mnt/backup/v%g.tar" -s" " 146 148)
> > home/share/D60/725CANON/CRW_2526.CRW
> > tar: home/share/D60/725CANON/CRW_2526.CRW: Cannot extract -- file
> > is continued from another volume

> This means that this file starts on one of the previous archives.  Try
> decreasing the archive number (145, 144,...) to find out the exact
> location.
>
> Regards,
> Sergey

Humm.  I see that my message was not sufficiently clear to explain what 
is going on.  In the case of the previous example the file CRW_2526.CRW 
does reside on the boundry between archive 145 and 146 but I would like 
tar to skip that file and begin extracting with the next one.  After 
examing the output in my message perhaps you are misinterpreting the 
verbose output from tar as part of the command line?  No file is 
specified for extraction on the command line, that's part of the output.

Humm... I wonder what would happen if I did specify a file, the next 
file that is; with the -K option...

address@hidden:/home/scratch
 26 # tar vx -M -B $(seq -f"--file=/mnt/backup/v%g.tar" -s" " 146 148) 
\ -K home/share/D60/725CANON/CRW_2527.CRW

home/share/D60/725CANON/CRW_2526.CRW
tar: home/share/D60/725CANON/CRW_2526.CRW: Cannot extract -- file is 
continued from another volume
tar: Skipping to next header
tar: home/share/D60/725CANON/CRW_2527.CRW: Not found in archive
tar: Error exit delayed from previous errors

address@hidden:/home/scratch
27 #

That did not work.

Do you think that my use of the POSIX format for multi-volume archives 
might be causing problems?  I had to throw the posix flag to tar because 
the gnu format couldn't (can't?) handle long file paths in multi-volume 
archives.

-Sam