Sergey Vlasov wrote: > On Wed, Aug 01, 2007 at 01:14:40PM -0400, Alan Stern wrote: > >> On Wed, 1 Aug 2007, Sergey Vlasov wrote: >> >> > [...] > >>> Without "usefree" the vfat code in 2.6.22 will read the whole FAT >>> to count free clusters on the filesystem. >>> >> But reading the whole FAT is very different from reading the entire >> partition. >> > > Reading the entire 500GB in one minute? I would really like to have > such disk :) > > Most likely "every block" here really means "a large sequential read". > Not sure what cluster size would be used for a 500GB FAT32 partition, > but with 4KB clusters the FAT size would be about 500MB - reading it > over USB could probably take about a minute. > OK, this makes things clearer. Thanks Sergey :-)
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