--- libmultipath/wwids.c | 6 ++++++ 1 file changed, 6 insertions(+) Index: multipath-tools-130222/libmultipath/wwids.c =================================================================== --- multipath-tools-130222.orig/libmultipath/wwids.c +++ multipath-tools-130222/libmultipath/wwids.c @@ -4,6 +4,7 @@ #include #include #include +#include #include "checkers.h" #include "vector.h" @@ -100,6 +101,11 @@ replace_wwids(vector mp) condlog(0, "cannot truncate wwids file : %s", strerror(errno)); goto out_file; } + if (lseek(fd, 0, SEEK_SET) < 0) { + condlog(0, "cannot seek to the start of the file : %s", + strerror(errno)); + goto out_file; + } len = strlen(WWIDS_FILE_HEADER); if (write_all(fd, WWIDS_FILE_HEADER, len) != len) { condlog(0, "Can't write wwid file header : %s",