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View Full Version : tape stats wrong?



daniel_p
April 11th, 2008, 02:42 AM
amstatus MonthlySet1 gives the following output:

taped : 0 0k 0k ( 0.00%) ( 0.00%)
tape 1 : 0 1958710080k 1958710080k (495.48%) MonthlySet1-8 (934 chunks)



Does that mean it has written 1.9TB on a 400GB LTO-3 tape?

The files are highly compressible - however, compression is disabled in my dump type:

compress none
program "GNUTAR"
strategy standard
priority high
auth "bsd"
dumpcycle 0
tape_splitsize 40 Gb
fallback_splitsize 2 Gb

daniel_p
April 11th, 2008, 02:45 AM
I believe that hardware compression is also disabled. Here is the sequence of events in my setup:

amtapetype
- hardware compression warning is displayed
mt-st /dev/st0 compression off
amtapetype
- stats suggest that hardware compression is now disabled

amdump MonthlySet1