[lustre-discuss] more on lustre striping

John Bauer bauerj at iodoctors.com
Wed May 18 15:46:28 PDT 2016


Since today's topic seems to be Lustre striping, I will revisit a 
previous line of questions I had.

Andreas had put me on to O_LOV_DELAY_CREATE which I have been 
experimenting with. My question is : Is there a way to flag a directory 
with O_LOV_DELAY_CREATE so that a file created in that directory will be 
created with O_LOV_DELAY_CREATE also.  Much like a file can inherit a 
directory's stripe count and stripe size, it would be convenient if a 
file could also inherit O_LOV_DELAY_CREATE?  That way, for open()s that 
I can not intercept ( and thus can not set O_LOV_DELAY_CREATE in oflags) 
, such as those issued by fopen(), I can then get the fd with fileno() 
and set the striping withioctl(fd, LL_IOC_LOV_SETSTRIPE, lum).

Thanks

John

-- 
I/O Doctors, LLC
507-766-0378
bauerj at iodoctors.com

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