On 05/19/2014 12:40 PM, Wido den Hollander wrote: > On 05/19/2014 12:31 PM, Florent B wrote: >> Hi all, >> >> I use CephFS and I am wondering what does "metadata" pool contains >> exactly ? >> > > It contains the directory structure of your filesystem > >> Its size is growing (multiple GB). >> >> It seems that it stores all operations occurring in CephFS, but is it >> totally necessary ? >> > > It doesn't store all operations, but it stores all the metadata like > directories, owners, file sizes, but not the contents of the files. It really seems to contain more than that. In our previous FS (MooseFS), metadata was around 600MB for more files than we have on CephFS (which metadata is around 3GB) ! That's really strange...
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