> So if you bump this to 32k then the fragmented size > is 512k which tells ZFS to switch to a different metaslab > once it drops below this threshold.
Makes sense after some more reading today ;) What happens if no metaslab has a block this large (or small) on a sufficiently full and fragmented system? Will the new writes fail altogether, or a sufficient free space block would still be used? > This is used to add more weight (i.e. preference) to specific > metaslabs. A metaslab receives this bonus if it has an offset > which is > lower than a previously use metaslab. Sorry this is somewhat > complicated and hard to explain without a whiteboard. :-) >From recent reading on Jeff's blog and links leading from it, I might guess this relates to different disk offsets with different writing speeds? Yes-no would suffice, as to spare the absent whiteboard ,) Thanks, //Jim
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