@@ -6,6 +6,7 @@
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
+#include <sys/statvfs.h>
#define TST_NO_DEFAULT_MAIN
#include "tst_test.h"
@@ -19,6 +20,8 @@ void tst_fill_fs(const char *path, int verbose)
size_t len;
ssize_t ret;
int fd;
+ struct statvfs fi;
+ statvfs(path, &fi);
for (;;) {
len = random() % (1024 * 102400);
@@ -41,6 +44,13 @@ void tst_fill_fs(const char *path, int verbose)
ret = write(fd, buf, MIN(len, sizeof(buf)));
if (ret < 0) {
+ /* retry on ENOSPC to make sure filesystem is really full */
+ if (errno == ENOSPC && len >= fi.f_bsize/2) {
+ SAFE_FSYNC(fd);
+ len /= 2;
+ continue;
+ }
+
SAFE_CLOSE(fd);
if (errno != ENOSPC)
Do more tries with size in half when write() getting ENOSPC, until the size is less than the filesystem block size. Though we can't really fill a filesystem full, this could make the routine more robust. Signed-off-by: Li Wang <liwang@redhat.com> Cc: Jan Stancek <jstancek@redhat.com> Cc: Martin Doucha <mdoucha@suse.cz> Suggested-by: Cyril Hrubis <chrubis@suse.cz> --- Notes: v2 --> v3 * move the condition judgment into while loop * reserve the print&return part in the loop lib/tst_fill_fs.c | 10 ++++++++++ 1 file changed, 10 insertions(+)