At the moment I have only XFS in production (it is CentOS default) so I cannot give you current information related to ext filesystems.
$ sudo xfs_db -r -c frag /dev/sda1 actual 335, ideal 331, fragmentation factor 1.19% Regards Peter On Tue, Aug 25, 2015 at 10:21 AM, Trent W. Buck <[email protected]> wrote: > Peter Ross <[email protected]> writes: > > > BTW: I am reducing it to 2% since.. long long time. I haven't seen an > issue > > arising from this at all. > > Hm, for the purposes of avoiding fragmentation, > I suppose the reserve amount needs to be proportional to > <bytes written per interval> rather than the disk size. > > I assume the disk size has grown faster that write speed, > and the 5% default was conservative even when it was introduced. > > So your result makes intuitive sense to me. > > OOC, Peter, what fragmentation does e2fsck -f report for your > filesystems? With repeated filling as root or with 0% reserve, I've > seen it go up to 20% or 30% (IIRC). > > NB: you can edit mke2fs to make new (ext) fs's default to 2%. > > _______________________________________________ > luv-main mailing list > [email protected] > http://lists.luv.asn.au/listinfo/luv-main >
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