v4.1.x: fs/lustre: recognize soft-links on file open #12171
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the llapi_file_get_stripe() function does not accept as an input file a soft-link. Check therefore whether the filename provided in File_open is a soft-link, retrieve the real file name in case it is, make sure it is also on a Lustre file system, and use the real filename in the llapi_file_get_stripe() function call instead. Fixes issue open-mpi#12141 Signed-off-by: Edgar Gabriel <[email protected]> (cherry picked from commit c6a6c25)
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Turns out the sys/mount.h can be tricky to use because various other system include files sometimes redefine some of the symbols in this include file, leading to compile failures. Careful ordering of include files may solve the problem, but here it simpler just to move the include of sys/mount.h back to its original location. related to open-mpi#12181 Signed-off-by: Howard Pritchard <[email protected]> (cherry picked from commit d2af1d7)
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the llapi_file_get_stripe() function does not accept as an input file a soft-link. Check therefore whether the filename provided in File_open is a soft-link, retrieve the real file name in case it is, make sure it is also on a Lustre file system, and use the real filename in the llapi_file_get_stripe() function call instead.
Fixes issue #12141
Signed-off-by: Edgar Gabriel [email protected]
(cherry picked from commit c6a6c25)
This is a v4.1.x backport of #12161.