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fsx: Add fallocate zero range operation

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This commit adds fallocate FALLOC_FL_ZERO_RANGE support for fsx.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Lukas Czerner
2014-03-13 15:19:58 +11:00
committed by Dave Chinner
parent 4544179a64
commit f074613829
1 changed files with 105 additions and 32 deletions
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ltp/fsx.c
+105 -32
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@@ -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();