Hi! Here http://blogs.sun.com/atulvid/entry/improving_performance_of_small_files is described a very interesting way to improve the performance of small files on a Lustre storage - to mount a loopback file, which is actually placed on the storage with LustreFS. I checked - it really worked. It greatly improved the speed. But in the end of the doc there is a notice: "Under heavy memory loads, Lustre sometime drops pages of IO going to loopback mounted files. This is a known issue is being worked on." What does it actually mean? And how it can affect my data on the storage? And does anybody actually use this method? Is there any way to use it safely?
----- WBR, Sergey Arlashin
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