On 2010-08-11, at 23:36, burlen wrote: > I am interested in how write()s are buffered in Lustre on the cleint, > server, and network in between. Specifically I'd like to understand what > happens during writes when large number of clients are making large > writes to all of the OSTs on an OSS, and the buffers are inadequate to > handle the outgoing/incoming data.
Lustre doesn't buffer dirty pages on the OSS, only on the client. The clients are granted a "reserve" of space in each OST filesystem to ensure there is enough free space for any cached writes that they do. Cheers, Andreas -- Andreas Dilger Lustre Technical Lead Oracle Corporation Canada Inc. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
