Re: Odd error from amcheck

>>>>> "JL" == Jon LaBadie <[email protected]> writes:

JL> Isn't the amanda tape header data still 32KB?  I thought you could
JL> skip syncronizing dd block size and actual tape bs.

See, that's what I thought, and yet:

AMANDA:backup2:~> dd if=/dev/nst0 bs=32k count=1
dd: error reading '/dev/nst0': Cannot allocate memory
0+0 records in
0+0 records out
0 bytes copied, 0.0220708 s, 0.0 kB/s

This is with Fedora 29, kernel 5.0.6.

However, rewinding and using a 512k block size does work.  It seems that
I must specify a block size no smaller than 512k (513k and 1000k work
fine) or else I get the odd "Cannot allocate memory" error.  That's what
I couldn't figure out previously.

We'll see what happens the next time Amanda needs to switch tapes.

 - J<