On Mon, Aug 29, 2011 at 19:44, Andy Cobaugh <phale...@gmail.com> wrote: > On 2011-08-29 at 19:39, Jason Edgecombe ( ja...@rampaginggeek.com ) said: >> >> I was told that noatime is bad for an AFS cache partition because AFS uses >> the atime to know when the cache entry was last accessed. > > Oops, looks like you're right, unless someone more knowledgeable says > otherwise. > > --andy
Someone can correct me, but reading the code it looks to me like the cache files' atime is only used at startup to initialize the cache manager's LRU mechanism. After that, the cache manager takes care of maintaining counters in an internal structure whenever cache files are used, without relying on the atime of the underlying filesystem. If that's correct, noatime might cause you not to do an ideal (LRU) usage of files soon after startup, but probably has little impact in the long run. Marc _______________________________________________ OpenAFS-info mailing list OpenAFS-info@openafs.org https://lists.openafs.org/mailman/listinfo/openafs-info
