rsync and tar offer the -S switch for 'handling sparse files efficiently'. But when would I ever want to handle them INefficiently? i.e. why doesnt it do this automatically?
Cheers, Terry.
T. Horsnell wrote:
rsync and tar offer the -S switch for 'handling sparse files efficiently'. But when would I ever want to handle them INefficiently? i.e. why doesnt it do this automatically?
Cheers, Terry.
Because detecting sparse files is "expensive". For files with only a few holes (sparely sparse?) it may be deemed cheaper to waste a few blocks on the drive rather than the CPU time to handle it "properly".
Jeff
On Wed, May 02, 2007 at 10:10:49AM -0400, Jeff Voskamp wrote:
T. Horsnell wrote:
rsync and tar offer the -S switch for 'handling sparse files efficiently'. But when would I ever want to handle them INefficiently? i.e. why doesnt it do this automatically?
Cheers, Terry.
Because detecting sparse files is "expensive". For files with only a few holes (sparely sparse?) it may be deemed cheaper to waste a few blocks on the drive rather than the CPU time to handle it "properly".
Ah, thank you. Cheers, Terry
Jeff
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