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fsx: add FIDEDUPERANGE support

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Add support for the dedupe range ioctl to fsx.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
This commit is contained in:
Darrick J. Wong
2018-12-06 22:24:20 -08:00
committed by Eryu Guan
parent cff5b96016
commit e7b6734822
1 changed files with 196 additions and 2 deletions
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ltp/fsx.c
+196 -2
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@@ -105,6 +105,7 @@ enum {
OP_COLLAPSE_RANGE,
OP_INSERT_RANGE,
OP_CLONE_RANGE,
OP_DEDUPE_RANGE,
OP_MAX_FULL,
/* integrity operations */
@@ -167,6 +168,7 @@ int insert_range_calls = 1; /* -I flag disables */
int mapped_reads = 1; /* -R flag disables it */
int check_file = 0; /* -X flag enables */
int clone_range_calls = 1; /* -J flag disables */
int dedupe_range_calls = 1; /* -B flag disables */
int integrity = 0; /* -i flag */
int fsxgoodfd = 0;
int o_direct; /* -Z */
@@ -261,6 +263,7 @@ static const char *op_names[] = {
[OP_COLLAPSE_RANGE] = "collapse_range",
[OP_INSERT_RANGE] = "insert_range",
[OP_CLONE_RANGE] = "clone_range",
[OP_DEDUPE_RANGE] = "dedupe_range",
[OP_FSYNC] = "fsync",
};
@@ -460,6 +463,20 @@ logdump(void)
else if (overlap2)
prt("\t******JJJJ");
break;
case OP_DEDUPE_RANGE:
prt("DEDUPE 0x%x thru 0x%x\t(0x%x bytes) to 0x%x thru 0x%x",
lp->args[0], lp->args[0] + lp->args[1] - 1,
lp->args[1],
lp->args[2], lp->args[2] + lp->args[1] - 1);
overlap2 = badoff >= lp->args[2] &&
badoff < lp->args[2] + lp->args[1];
if (overlap && overlap2)
prt("\tBBBB**BBBB");
else if (overlap)
prt("\tBBBB******");
else if (overlap2)
prt("\t******BBBB");
break;
case OP_FSYNC:
prt("FSYNC");
break;
@@ -1410,6 +1427,137 @@ do_clone_range(unsigned offset, unsigned length, unsigned dest)
}
#endif
#ifdef FIDEDUPERANGE
int
test_dedupe_range(void)
{
struct file_dedupe_range *fdr;
off_t new_len;
int error;
int ret = 1;
/* Alloc memory */
fdr = calloc(sizeof(struct file_dedupe_range_info) +
sizeof(struct file_dedupe_range), 1);
if (!fdr) {
prterr("do_dedupe_range: malloc");
report_failure(161);
}
/* Make sure we have at least two blocks */
new_len = block_size * 2;
if (file_size < new_len && ftruncate(fd, new_len)) {
warn("main: ftruncate");
exit(132);
}
/* Try to dedupe them */
fdr->src_length = block_size;
fdr->dest_count = 1;
fdr->info[0].dest_fd = fd;
fdr->info[0].dest_offset = block_size;
if (ioctl(fd, FIDEDUPERANGE, fdr))
error = errno;
else if (fdr->info[0].status < 0)
error = -fdr->info[0].status;
else
error = 0;
if (error == EOPNOTSUPP || error == ENOTTY) {
if (!quiet)
fprintf(stderr,
"main: filesystem does not support "
"dedupe range, disabling!\n");
ret = 0;
}
/* Put the file back the way it was. */
if (file_size < new_len && ftruncate(fd, file_size)) {
warn("main: ftruncate");
exit(132);
}
free(fdr);
return ret;
}
void
do_dedupe_range(unsigned offset, unsigned length, unsigned dest)
{
struct file_dedupe_range *fdr;
if (length == 0) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping zero length dedupe range\n");
log5(OP_DEDUPE_RANGE, offset, length, dest, FL_SKIPPED);
return;
}
if ((loff_t)offset >= file_size) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping dedupe range behind EOF\n");
log5(OP_DEDUPE_RANGE, offset, length, dest, FL_SKIPPED);
return;
}
log5(OP_DEDUPE_RANGE, offset, length, dest, FL_NONE);
if (testcalls <= simulatedopcount)
return;
if ((progressinterval && testcalls % progressinterval == 0) ||
(debug && (monitorstart == -1 || monitorend == -1 ||
dest <= monitorstart || dest + length <= monitorend))) {
prt("%lu dedupe\tfrom 0x%x to 0x%x, (0x%x bytes) at 0x%x\n",
testcalls, offset, offset+length, length, dest);
}
/* Alloc memory */
fdr = calloc(sizeof(struct file_dedupe_range_info) +
sizeof(struct file_dedupe_range), 1);
if (!fdr) {
prterr("do_dedupe_range: malloc");
report_failure(161);
}
/* Dedupe data blocks */
fdr->src_offset = offset;
fdr->src_length = length;
fdr->dest_count = 1;
fdr->info[0].dest_fd = fd;
fdr->info[0].dest_offset = dest;
if (ioctl(fd, FIDEDUPERANGE, fdr) == -1) {
prt("dedupe range: 0x%x to 0x%x at 0x%x\n", offset,
offset + length, dest);
prterr("do_dedupe_range(0): FIDEDUPERANGE");
report_failure(161);
} else if (fdr->info[0].status < 0) {
errno = -fdr->info[0].status;
prt("dedupe range: 0x%x to 0x%x at 0x%x\n", offset,
offset + length, dest);
prterr("do_dedupe_range(1): FIDEDUPERANGE");
report_failure(161);
}
free(fdr);
}
#else
int
test_dedupe_range(void)
{
return 0;
}
void
do_dedupe_range(unsigned offset, unsigned length, unsigned dest)
{
return;
}
#endif
#ifdef HAVE_LINUX_FALLOC_H
/* fallocate is basically a no-op unless extending, then a lot like a truncate */
void
@@ -1568,6 +1716,7 @@ op_args_count(int operation)
{
switch (operation) {
case OP_CLONE_RANGE:
case OP_DEDUPE_RANGE:
return 4;
default:
return 3;
@@ -1723,6 +1872,25 @@ test(void)
} while (llabs(offset2 - offset) < size ||
offset2 + size > maxfilelen);
break;
case OP_DEDUPE_RANGE:
{
int tries = 0;
TRIM_OFF_LEN(offset, size, file_size);
offset = offset & ~(block_size - 1);
size = size & ~(block_size - 1);
do {
if (tries++ >= 30) {
size = 0;
break;
}
offset2 = random();
TRIM_OFF(offset2, file_size);
offset2 = offset2 & ~(block_size - 1);
} while (llabs(offset2 - offset) < size ||
offset2 + size > file_size);
break;
}
}
have_op:
@@ -1772,6 +1940,12 @@ have_op:
goto out;
}
break;
case OP_DEDUPE_RANGE:
if (!dedupe_range_calls) {
log5(op, offset, size, offset2, FL_SKIPPED);
goto out;
}
break;
}
switch (op) {
@@ -1850,6 +2024,18 @@ have_op:
do_clone_range(offset, size, offset2);
break;
case OP_DEDUPE_RANGE:
if (size == 0) {
log5(OP_DEDUPE_RANGE, offset, size, offset2, FL_SKIPPED);
goto out;
}
if (offset2 + size > maxfilelen) {
log5(OP_DEDUPE_RANGE, offset, size, offset2, FL_SKIPPED);
goto out;
}
do_dedupe_range(offset, size, offset2);
break;
case OP_FSYNC:
dofsync();
break;
@@ -1875,7 +2061,7 @@ void
usage(void)
{
fprintf(stdout, "usage: %s",
"fsx [-dknqxAFJLOWZ] [-b opnum] [-c Prob] [-g filldata] [-i logdev] [-j logid] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] fname\n\
"fsx [-dknqxABFJLOWZ] [-b opnum] [-c Prob] [-g filldata] [-i logdev] [-j logid] [-l flen] [-m start:end] [-o oplen] [-p progressinterval] [-r readbdy] [-s style] [-t truncbdy] [-w writebdy] [-D startingop] [-N numops] [-P dirpath] [-S seed] fname\n\
-b opnum: beginning operation number (default 1)\n\
-c P: 1 in P chance of file close+open at each op (default infinity)\n\
-d: debug output for all operations\n\
@@ -1919,6 +2105,9 @@ usage(void)
#ifdef FICLONERANGE
" -J: Do not use clone range calls\n"
#endif
#ifdef FIDEDUPERANGE
" -B: Do not use dedupe range calls\n"
#endif
" -L: fsxLite - no file creations & no file size changes\n\
-N numops: total # operations to do (default infinity)\n\
-O: use oplen (see -o flag) for every op (default random)\n\
@@ -2122,7 +2311,7 @@ main(int argc, char **argv)
setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
while ((ch = getopt_long(argc, argv,
"b:c:dfg:i:j:kl:m:no:p:qr:s:t:w:xyAD:FJKHzCILN:OP:RS:WXZ",
"b:c:dfg:i:j:kl:m:no:p:qr:s:t:w:xyABD:FJKHzCILN:OP:RS:WXZ",
longopts, NULL)) != EOF)
switch (ch) {
case 'b':
@@ -2255,6 +2444,9 @@ main(int argc, char **argv)
case 'J':
clone_range_calls = 0;
break;
case 'B':
dedupe_range_calls = 0;
break;
case 'L':
lite = 1;
o_flags &= ~(O_CREAT|O_TRUNC);
@@ -2475,6 +2667,8 @@ main(int argc, char **argv)
insert_range_calls = test_fallocate(FALLOC_FL_INSERT_RANGE);
if (clone_range_calls)
clone_range_calls = test_clone_range();
if (dedupe_range_calls)
dedupe_range_calls = test_dedupe_range();
while (numops == -1 || numops--)
if (!test())