dump | restore fails: unknown tape header type 1853384566

[Andrew Snow]

Mikhail T. wrote:
>    dump 0aCf 64  /ibm/ibmo.0.2009-03-24.dump /old
>      DUMP: WARNING: should use -L when dumping live read-write filesystems!

I thought you said it was a read-only filesystem?

In my experience, restore can sometimes throw warnings if you dump a 
live filesystem.  It might be causing your errors?  If possible, can you 
try completely unmounting the filesystem you are dumping and trying again?