dump | restore fails: unknown tape header type 1853384566

[Scott Lambert]

On Tue, Mar 24, 2009 at 10:08:04PM -0400, Mikhail T. wrote:
> That said, I point out, that for me, dump is not failing (although it 
> did hang this morning). It is the restore, which fails to read dump's 
> output:
> 
>    unknown tape header type 213474529
>    abort? [yn] n
>    resync restore, skipped 502 blocks
>    expected next file 54, got 0
>    unknown tape header type -954356454
>    abort? [yn] n
>    resync restore, skipped 29 blocks
>    expected next file 54, got 0
>    unknown tape header type -1754938223
>    abort? [yn] n
>    resync restore, skipped 482 blocks
>    expected next file 54, got 0
>    unknown tape header type -915868704
>    abort? [yn] n
>    resync restore, skipped 29 blocks
>    expected next file 54, got 0
>    unknown tape header type 1790084751
>    abort? [yn] n
>    resync restore, skipped 482 blocks
>    expected next file 54, got 0
>    unknown tape header type 903667267
>    abort? [yn] n
>    ...

If you happen to have a different version of FreeBSD on another box of
boxes, older or newer, you might try a test restore of your problem dump
file on those boxes.

If you can make a dump file which shows this bug on being fed to
restore, which doesn't have sensitive information in it, I would be
happy to download it and see if I can reproduce the problem on a few
boxes with different versions of FreeBSD here.  I had some restore
issues in May of 2008 which got resolved because I could create a dump
file which would fail to restore on a developer's system.  But that was
a different issue than you are seeing.

-- 
Scott Lambert                    KC5MLE                       Unix SysAdmin
lambert at lambertfam.org