On 17/09/2019 17.46, Yan, Zheng wrote:
> when a snapshoted directory is deleted, mds moves the directory into
> to stray directory. You have 57k strays, each time mds have a cache
> miss for stray, mds needs to load a stray dirfrag. This is very
> inefficient because a stray dirfrag contains lots
On Sat, Sep 14, 2019 at 8:57 PM Hector Martin wrote:
>
> On 13/09/2019 16.25, Hector Martin wrote:
> > Is this expected for CephFS? I know data deletions are asynchronous, but
> > not being able to delete metadata/directories without an undue impact on
> > the whole filesystem performance is
On 13/09/2019 16.25, Hector Martin wrote:
> Is this expected for CephFS? I know data deletions are asynchronous, but
> not being able to delete metadata/directories without an undue impact on
> the whole filesystem performance is somewhat problematic.
I think I'm getting a feeling for who the
We have a cluster running CephFS with metadata on SSDs and data split
between SSDs and OSDs (main pool is on HDDs, some subtrees are on an SSD
pool).
We're seeing quite poor deletion performance, especially for
directories. It seems that previously empty directories are often
deleted
