I have noticed some inconsistencies in the *lfs setstripe/getstripe
*commands and *llapi_file_get_stripe(*) function. Notice in the lfs
setstripe/getstripe example below that specifying 7 for the offset with
lfs setstripe -i 7 results in lfs getstripe reporting
lmm_stripe_offset=7. That all looks good. But the simple program below
that calls *llapi_file_get_stripe() *and prints out the *lmm_XXX* values
reports *lmm_stripe_o**ffset**=0*. Doesn't seem right.
% lfs setstripe -c 4 -i *7* file.dat
% lfs getstripe file.dat
file.dat
lmm_stripe_count: 4
lmm_stripe_size: 1048576
lmm_pattern: 1
lmm_layout_gen: 0
lmm_stripe_offset: *7*
obdidx objid objid group
7 5611546 0x55a01a 0
0 5607846 0x5591a6 0
8 5612725 0x55a4b5 0
16 5611434 0x559faa 0
But whenever I call llapi_file_get_stripe(), the value
*lmm_stripe_offset* that is returned in the *struct lov_user_md* is
always 0.
% *./main.exe file.dat*
0=llapi_file_get_stripe()
lmm_stripe_count=4
lmm_stripe_size=1048576
lmm_pattern=1
lmm_layout_gen=0
lmm_stripe_offset=0
% *cat main.c*
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "lustre/lustre_user.h"
main(int argc, char **argv){
if( argc < 2 ) return -1 ;
char *fileName = argv[1] ;
struct lov_user_md_v3 lum ;
memset( &lum, 0, sizeof(lum) ) ;
int status = llapi_file_get_stripe(fileName, &lum);
fprintf(stderr,"%d=llapi_file_get_stripe()\n",status);
if( status != 0 ) return -1 ;
fprintf(stderr,"lmm_stripe_count=%d\n",lum.lmm_stripe_count);
fprintf(stderr,"lmm_stripe_size=%lld\n",lum.lmm_stripe_size);
fprintf(stderr,"lmm_pattern=%d\n",lum.lmm_pattern);
fprintf(stderr,"lmm_layout_gen=%d\n",lum.lmm_layout_gen);
fprintf(stderr,"lmm_stripe_offset=%d\n",(int)lum.lmm_stripe_offset);
exit(0);
}
--
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