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batrick / ceph-linode

Launch Ceph using the Linode VPS provider
GNU General Public License v3.0
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Autotune mds memory target #63

Open batrick opened 3 years ago

batrick commented 3 years ago

https://github.com/ceph/ceph/pull/39550/files

bengland2 commented 3 years ago

This reminds me of this bz. You don't want to allocate a lot of memory initially to the MDS cache if you don't know that it's needed, but the small default won't work for millions of files. if you wait, then will there be enough memory to increase cache size later on? Wouldn't the linode VMs have to be resized (ballooned) for this to avoid OOM problems?

sebastian-philipp commented 3 years ago

https://tracker.ceph.com/issues/50883