[lustre-discuss] Slow release of inodes on OST

Åke Sandgren ake.sandgren at hpc2n.umu.se
Tue Feb 4 06:31:47 PST 2020

Forgot to mention that I'm running 2.13.0 from git on the servers.

On 2/4/20 3:23 PM, Åke Sandgren wrote:
> Hi!
> When I create a large number of files on an OST and then remove them,
> the used inode count on the OST decreases very slowly, it takes several
> hours for it to go from 3M to the correct ~10k.
> (I'm running the io500 test suite)
> Is there something I can do to make it release them faster?
> Right now it has gone from 3M to 1.5M in 6 hours, (lfs df -i).
> These are SSD based OST's in case it matters.

Ake Sandgren, HPC2N, Umea University, S-90187 Umea, Sweden
Internet: ake at hpc2n.umu.se   Phone: +46 90 7866134 Fax: +46 90-580 14
Mobile: +46 70 7716134 WWW: http://www.hpc2n.umu.se

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