hi,sage thanks for you answer. I have another problem, if i didn't set "max_size" ? does that means i won't recvoery any data if client crashes? 2011/4/27 Sage Weil <sage@xxxxxxxxxxxx>: > On Wed, 27 Apr 2011, huang jun wrote: >> hi,developers >> when write a file, why did client send a message to mds to change >> the variable "max_size" in inode ? so, if we don't change the >> "max_size", what consequence we will get? and why the client will >> not write if the mds didn't return the changed "max_size" to client? > > The max_size sets a bound on the number of data objects the client is > allowed to write to, which in turn bounds the amount of work probing > objects that MDS has to do if the client crashes to recover the file size > and mtime. > > Setting it larger will let the client write more data faster, but will > mean more work if the client crashes. > > sage > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
