Hi Rodi,

The "amrecover: Can't read file header" message happened to me when the
chg-disk script wasn't being called, and amrecover was trying to read
from an empty tape slot directory i.e. the "data" sym-link was wrong.

My amanda.conf has these entries:

tpchanger "chg-disk" 
tapedev "file:/s4/amanda_tapes" 
rawtapedev "file:/s4/amanda_tapes" 
changerfile "/usr/local/etc/amanda/clst01/changer"
changerdev "/dev/null"
amrecover_changer "chg-disk"
 
In amrecover, I do:

amrecover> settape chg-disk
amrecover> extract
...

and it works fine. Doing an "ls -l" on the tape slot directory
(/s4/amanda_tapes for me) shows that the "data" sym-link is changed to
point to the correct tape slot before each extract begins.

The value of "amrecover_changer" seems to be arbitrary - as long as the
same string is used in amrecover, then it will use the value of
"tpchanger" (AFAIK).

Hope this helps,
Marc Langlois.
  
On Tue, 2004-02-03 at 06:34, R.M. Evers wrote:
> hi amanda-users,
> 
> sorry to bring this up again, but i'm also having problems with using
> amrecover with the file: driver.. i have read the recent thread, but i
> cannot get it to work properly.
snip...
> 
> then, i tried to recover some directory using amrecover. at the final
> 'extract'-point, i receive the error:
> 
>     --
>     Extracting files using tape drive daily01 on host bu2.
>     Load tape daily02 now
>     Continue [?/Y/n/s/t]? 
>     EOF, check amidxtaped.<timestamp>.debug file on bu2.
>     amrecover: short block 0 bytes
>     UNKNOWN file
>     amrecover: Can't read file header
>     extract_list - child returned non-zero status: 1
>     --
> 
> the recover works fine when i issue an "amtape DailySet1 label daily02"
> on the backup server, but hey, i'm lazy..
> 
> i've tried different values for the amrecover_changer parameter
> mentioned in the thread last month, but to no avail.. right now, here's
> my config:
> 
>     --
>     tpchanger "chg-disk"
>     changerfile "/etc/amanda/DailySet1/changer"
>     tapedev "file:/var/backups/amanda-tapes/DailySet1"
>     amrecover_changer "file:/var/backups/amanda-tapes/DailySet1"
>     --
> 
> i read the docs, googled like there's no tomorrow, but i can't seem to
> get this right. what am i missing here?
> 
> thanks & regards,
> -rodi.