This commit adds fallocate FALLOC_FL_ZERO_RANGE support for fsx.
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
---
ltp/fsx.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++---------------
1 file changed, 105 insertions(+), 32 deletions(-)
diff --git a/ltp/fsx.c b/ltp/fsx.c
index c36a038..bd1ed76 100644
--- a/ltp/fsx.c
+++ b/ltp/fsx.c
@@ -69,6 +69,7 @@ int logcount = 0; /* total ops */
* TRUNCATE: - 4
* FALLOCATE: - 5
* PUNCH HOLE: - 6
+ * ZERO RANGE: - 7
*
* When mapped read/writes are disabled, they are simply converted to normal
* reads and writes. When fallocate/fpunch calls are disabled, they are
@@ -92,7 +93,8 @@ int logcount = 0; /* total ops */
#define OP_TRUNCATE 4
#define OP_FALLOCATE 5
#define OP_PUNCH_HOLE 6
-#define OP_MAX_FULL 7
+#define OP_ZERO_RANGE 7
+#define OP_MAX_FULL 8
/* operation modifiers */
#define OP_CLOSEOPEN 100
@@ -139,6 +141,7 @@ int seed = 1; /* -S flag */
int mapped_writes = 1; /* -W flag disables */
int fallocate_calls = 1; /* -F flag disables */
int punch_hole_calls = 1; /* -H flag disables */
+int zero_range_calls = 1; /* -z flag disables */
int mapped_reads = 1; /* -R flag disables it */
int fsxgoodfd = 0;
int o_direct; /* -Z */
@@ -317,6 +320,14 @@ logdump(void)
lp->args[0] + lp->args[1])
prt("\t******PPPP");
break;
+ case OP_ZERO_RANGE:
+ prt("ZERO 0x%x thru 0x%x\t(0x%x bytes)",
+ lp->args[0], lp->args[0] + lp->args[1] - 1,
+ lp->args[1]);
+ if (badoff >= lp->args[0] && badoff <
+ lp->args[0] + lp->args[1])
+ prt("\t******ZZZZ");
+ break;
case OP_SKIPPED:
prt("SKIPPED (no operation)");
break;
@@ -879,6 +890,65 @@ do_punch_hole(unsigned offset, unsigned length)
}
#endif
+#ifdef FALLOC_FL_ZERO_RANGE
+void
+do_zero_range(unsigned offset, unsigned length)
+{
+ unsigned end_offset;
+ int mode = FALLOC_FL_ZERO_RANGE;
+ int keep_size;
+
+ if (length == 0) {
+ if (!quiet && testcalls > simulatedopcount)
+ prt("skipping zero length zero range\n");
+ log4(OP_SKIPPED, OP_ZERO_RANGE, offset, length);
+ return;
+ }
+
+ keep_size = random() % 2;
+
+ end_offset = keep_size ? 0 : offset + length;
+
+ if (end_offset > biggest) {
+ biggest = end_offset;
+ if (!quiet && testcalls > simulatedopcount)
+ prt("zero_range to largest ever: 0x%x\n", end_offset);
+ }
+
+ /*
+ * last arg matches fallocate string array index in logdump:
+ * 0: allocate past EOF
+ * 1: extending prealloc
+ * 2: interior prealloc
+ */
+ log4(OP_ZERO_RANGE, offset, length, (end_offset > file_size) ? (keep_size ? 0 : 1) : 2);
+
+ if (testcalls <= simulatedopcount)
+ return;
+
+ if ((progressinterval && testcalls % progressinterval == 0) ||
+ (debug && (monitorstart == -1 || monitorend == -1 ||
+ end_offset <= monitorend))) {
+ prt("%lu zero\tfrom 0x%x to 0x%x, (0x%x bytes)\n", testcalls,
+ offset, offset+length, length);
+ }
+ if (fallocate(fd, mode, (loff_t)offset, (loff_t)length) == -1) {
+ prt("%pzero range: %x to %x\n", offset, length);
+ prterr("do_zero_range: fallocate");
+ report_failure(161);
+ }
+
+ memset(good_buf + offset, '\0', length);
+}
+
+#else
+void
+do_zero_range(unsigned offset, unsigned length)
+{
+ return;
+}
+#endif
+
#ifdef HAVE_LINUX_FALLOC_H
/* fallocate is basically a no-op unless extending, then a lot like a truncate */
void
@@ -1047,6 +1117,12 @@ test(void)
goto out;
}
break;
+ case OP_ZERO_RANGE:
+ if (!zero_range_calls) {
+ log4(OP_SKIPPED, OP_ZERO_RANGE, offset, size);
+ goto out;
+ }
+ break;
}
switch (op) {
@@ -1085,6 +1161,10 @@ test(void)
TRIM_OFF_LEN(offset, size, file_size);
do_punch_hole(offset, size);
break;
+ case OP_ZERO_RANGE:
+ TRIM_OFF_LEN(offset, size, file_size);
+ do_zero_range(offset, size);
+ break;
default:
prterr("test: unknown operation");
report_failure(42);
@@ -1140,7 +1220,10 @@ usage(void)
" -F: Do not use fallocate (preallocation) calls\n"
#endif
#ifdef FALLOC_FL_PUNCH_HOLE
-" -H: Do not use punch hole calls\n"
+" -H: Do not use punch hole calls\n"
+#endif
+#ifdef FALLOC_FL_ZERO_RANGE
+" -z: Do not use zero range calls\n"
#endif
" -L: fsxLite - no file creations & no file size changes\n\
-N numops: total # operations to do (default infinity)\n\
@@ -1290,40 +1373,22 @@ int aio_rw(int rw, int fd, char *buf, unsigned len, unsigned offset)
#endif
-void
-test_fallocate()
+int
+test_fallocate(int mode)
{
#ifdef HAVE_LINUX_FALLOC_H
- if (!lite && fallocate_calls) {
- if (fallocate(fd, 0, 0, 1) && errno == EOPNOTSUPP) {
+ int ret = 0;
+ if (!lite) {
+ if (fallocate(fd, mode, 0, 1) && errno == EOPNOTSUPP) {
if(!quiet)
- warn("main: filesystem does not support fallocate, disabling\n");
- fallocate_calls = 0;
+ warn("main: filesystem does not support "
+ "fallocate mode 0x%x, disabling!\n", mode);
} else {
+ ret = 1;
ftruncate(fd, 0);
}
}
-#else /* ! HAVE_LINUX_FALLOC_H */
- fallocate_calls = 0;
-#endif
-
-}
-
-void
-test_punch_hole()
-{
-#ifdef FALLOC_FL_PUNCH_HOLE
- if (!lite && punch_hole_calls) {
- if (fallocate(fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
- 0, 1) && errno == EOPNOTSUPP) {
- if(!quiet)
- warn("main: filesystem does not support fallocate punch hole, disabling");
- punch_hole_calls = 0;
- } else
- ftruncate(fd, 0);
- }
-#else /* ! PUNCH HOLE */
- punch_hole_calls = 0;
+ return ret;
#endif
}
@@ -1345,7 +1410,7 @@ main(int argc, char **argv)
setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
- while ((ch = getopt(argc, argv, "b:c:dfl:m:no:p:qr:s:t:w:xyAD:FHLN:OP:RS:WZ"))
+ while ((ch = getopt(argc, argv, "b:c:dfl:m:no:p:qr:s:t:w:xyAD:FHzLN:OP:RS:WZ"))
!= EOF)
switch (ch) {
case 'b':
@@ -1445,6 +1510,9 @@ main(int argc, char **argv)
case 'H':
punch_hole_calls = 0;
break;
+ case 'z':
+ zero_range_calls = 0;
+ break;
case 'L':
lite = 1;
break;
@@ -1590,8 +1658,13 @@ main(int argc, char **argv)
} else
check_trunc_hack();
- test_fallocate();
- test_punch_hole();
+ if (fallocate_calls)
+ fallocate_calls = test_fallocate(0);
+ if (punch_hole_calls)
+ punch_hole_calls = test_fallocate(FALLOC_FL_PUNCH_HOLE |
+ FALLOC_FL_KEEP_SIZE);
+ if (zero_range_calls)
+ zero_range_calls = test_fallocate(FALLOC_FL_ZERO_RANGE);
while (numops == -1 || numops--)
test();
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
