[Lustre-discuss] O_DIRECT
Michael Kluge
Michael.Kluge at tu-dresden.de
Sat Aug 14 00:32:09 PDT 2010
Hi all,
how does Lustre handle write() requests to files opened with O_DIRECT.
Does the OSS enforce that the OST has physically written the data to the
OST before the op is completed or does the write() call return on the
client before this? I do not see the whole file content walking through
the FC port of the RAID controller, but it can also be that my
measurement is wrong ...
Michael
--
Michael Kluge, M.Sc.
Technische Universität Dresden
Center for Information Services and
High Performance Computing (ZIH)
D-01062 Dresden
Germany
Contact:
Willersbau, Room WIL A 208
Phone: (+49) 351 463-34217
Fax: (+49) 351 463-37773
e-mail: michael.kluge at tu-dresden.de
WWW: http://www.tu-dresden.de/zih
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