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fsx: add FICLONERANGE support

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Add support for the clone range (i.e. reflink) 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 22:24:14 -08:00
committed by Eryu Guan
parent e05b9c781a
commit cff5b96016
1 changed files with 152 additions and 5 deletions
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ltp/fsx.c
+152 -5
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@@ -104,6 +104,7 @@ enum {
OP_ZERO_RANGE,
OP_COLLAPSE_RANGE,
OP_INSERT_RANGE,
OP_CLONE_RANGE,
OP_MAX_FULL,
/* integrity operations */
@@ -165,6 +166,7 @@ int collapse_range_calls = 1; /* -C flag disables */
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 integrity = 0; /* -i flag */
int fsxgoodfd = 0;
int o_direct; /* -Z */
@@ -258,6 +260,7 @@ static const char *op_names[] = {
[OP_ZERO_RANGE] = "zero_range",
[OP_COLLAPSE_RANGE] = "collapse_range",
[OP_INSERT_RANGE] = "insert_range",
[OP_CLONE_RANGE] = "clone_range",
[OP_FSYNC] = "fsync",
};
@@ -320,7 +323,6 @@ log4(int operation, int arg0, int arg1, enum opflags flags)
logptr = 0;
}
void
logdump(void)
{
@@ -342,7 +344,7 @@ logdump(void)
count = LOGSIZE;
}
for ( ; count > 0; count--) {
bool overlap;
bool overlap, overlap2;
int opnum;
opnum = i+1 + (logcount/LOGSIZE)*LOGSIZE;
@@ -444,6 +446,20 @@ logdump(void)
if (overlap)
prt("\t******IIII");
break;
case OP_CLONE_RANGE:
prt("CLONE 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("\tJJJJ**JJJJ");
else if (overlap)
prt("\tJJJJ******");
else if (overlap2)
prt("\t******JJJJ");
break;
case OP_FSYNC:
prt("FSYNC");
break;
@@ -1304,6 +1320,96 @@ do_insert_range(unsigned offset, unsigned length)
}
#endif
#ifdef FICLONERANGE
int
test_clone_range(void)
{
struct file_clone_range fcr = {
.src_fd = fd,
};
if (ioctl(fd, FICLONERANGE, &fcr) &&
(errno = EOPNOTSUPP || errno == ENOTTY)) {
if (!quiet)
fprintf(stderr,
"main: filesystem does not support "
"clone range, disabling!\n");
return 0;
}
return 1;
}
void
do_clone_range(unsigned offset, unsigned length, unsigned dest)
{
struct file_clone_range fcr = {
.src_fd = fd,
.src_offset = offset,
.src_length = length,
.dest_offset = dest,
};
if (length == 0) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping zero length clone range\n");
log5(OP_CLONE_RANGE, offset, length, dest, FL_SKIPPED);
return;
}
if ((loff_t)offset >= file_size) {
if (!quiet && testcalls > simulatedopcount)
prt("skipping clone range behind EOF\n");
log5(OP_CLONE_RANGE, offset, length, dest, FL_SKIPPED);
return;
}
if (dest + length > biggest) {
biggest = dest + length;
if (!quiet && testcalls > simulatedopcount)
prt("cloning to largest ever: 0x%x\n", dest + length);
}
log5(OP_CLONE_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 clone\tfrom 0x%x to 0x%x, (0x%x bytes) at 0x%x\n",
testcalls, offset, offset+length, length, dest);
}
if (ioctl(fd, FICLONERANGE, &fcr) == -1) {
prt("clone range: 0x%x to 0x%x at 0x%x\n", offset,
offset + length, dest);
prterr("do_clone_range: FICLONERANGE");
report_failure(161);
}
memcpy(good_buf + dest, good_buf + offset, length);
if (dest > file_size)
memset(good_buf + file_size, '\0', dest - file_size);
if (dest + length > file_size)
file_size = dest + length;
}
#else
int
test_clone_range(void)
{
return 0;
}
void
do_clone_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
@@ -1461,6 +1567,8 @@ static int
op_args_count(int operation)
{
switch (operation) {
case OP_CLONE_RANGE:
return 4;
default:
return 3;
}
@@ -1534,7 +1642,7 @@ fail:
int
test(void)
{
unsigned long offset;
unsigned long offset, offset2;
unsigned long size;
unsigned long rv;
unsigned long op;
@@ -1565,6 +1673,7 @@ test(void)
op = log_entry.operation;
offset = log_entry.args[0];
size = log_entry.args[1];
offset2 = log_entry.args[2];
closeopen = !!(log_entry.flags & FL_CLOSE_OPEN);
keep_size = !!(log_entry.flags & FL_KEEP_SIZE);
goto have_op;
@@ -1577,6 +1686,7 @@ test(void)
closeopen = (rv >> 3) < (1 << 28) / closeprob;
offset = random();
offset2 = 0;
size = maxoplen;
if (randomoplen)
size = random() % (maxoplen + 1);
@@ -1602,6 +1712,17 @@ test(void)
if (zero_range_calls && size && keep_size_calls)
keep_size = random() % 2;
break;
case OP_CLONE_RANGE:
TRIM_OFF_LEN(offset, size, file_size);
offset = offset & ~(block_size - 1);
size = size & ~(block_size - 1);
do {
offset2 = random();
TRIM_OFF(offset2, maxfilelen);
offset2 = offset2 & ~(block_size - 1);
} while (llabs(offset2 - offset) < size ||
offset2 + size > maxfilelen);
break;
}
have_op:
@@ -1645,6 +1766,12 @@ have_op:
goto out;
}
break;
case OP_CLONE_RANGE:
if (!clone_range_calls) {
log5(op, offset, size, offset2, FL_SKIPPED);
goto out;
}
break;
}
switch (op) {
@@ -1711,6 +1838,18 @@ have_op:
do_insert_range(offset, size);
break;
case OP_CLONE_RANGE:
if (size == 0) {
log5(OP_CLONE_RANGE, offset, size, offset2, FL_SKIPPED);
goto out;
}
if (offset2 + size > maxfilelen) {
log5(OP_CLONE_RANGE, offset, size, offset2, FL_SKIPPED);
goto out;
}
do_clone_range(offset, size, offset2);
break;
case OP_FSYNC:
dofsync();
break;
@@ -1736,7 +1875,7 @@ void
usage(void)
{
fprintf(stdout, "usage: %s",
"fsx [-dknqxAFLOWZ] [-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 [-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\
-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\
@@ -1777,6 +1916,9 @@ usage(void)
#ifdef FALLOC_FL_INSERT_RANGE
" -I: Do not use insert range calls\n"
#endif
#ifdef FICLONERANGE
" -J: Do not use clone 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\
@@ -1980,7 +2122,7 @@ 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:FKHzCILN:OP:RS:WXZ",
"b:c:dfg:i:j:kl:m:no:p:qr:s:t:w:xyAD:FJKHzCILN:OP:RS:WXZ",
longopts, NULL)) != EOF)
switch (ch) {
case 'b':
@@ -2110,6 +2252,9 @@ main(int argc, char **argv)
case 'I':
insert_range_calls = 0;
break;
case 'J':
clone_range_calls = 0;
break;
case 'L':
lite = 1;
o_flags &= ~(O_CREAT|O_TRUNC);
@@ -2328,6 +2473,8 @@ main(int argc, char **argv)
collapse_range_calls = test_fallocate(FALLOC_FL_COLLAPSE_RANGE);
if (insert_range_calls)
insert_range_calls = test_fallocate(FALLOC_FL_INSERT_RANGE);
if (clone_range_calls)
clone_range_calls = test_clone_range();
while (numops == -1 || numops--)
if (!test())