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fsx: add support for keeping existing file

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With fsx -k, do not truncate existing file and use its size as upper
bound on file size.

This is needed to prevent fsx from truncating the file on start of
test when testing fsx on cloned files.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Amir Goldstein
2017-09-07 10:26:38 +03:00
committed by Eryu Guan
parent 90d0b3e166
commit 2a15cabaf6
1 changed files with 35 additions and 13 deletions
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ltp/fsx.c
+35 -13
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@@ -628,17 +628,18 @@ void
check_trunc_hack(void)
{
struct stat statbuf;
off_t offset = file_size + (off_t)100000;
if (ftruncate(fd, (off_t)0))
if (ftruncate(fd, file_size))
goto ftruncate_err;
if (ftruncate(fd, (off_t)100000))
if (ftruncate(fd, offset))
goto ftruncate_err;
fstat(fd, &statbuf);
if (statbuf.st_size != (off_t)100000) {
if (statbuf.st_size != offset) {
prt("no extend on truncate! not posix!\n");
exit(130);
}
if (ftruncate(fd, 0)) {
if (ftruncate(fd, file_size)) {
ftruncate_err:
prterr("check_trunc_hack: ftruncate");
exit(131);
@@ -1635,7 +1636,7 @@ void
usage(void)
{
fprintf(stdout, "usage: %s",
"fsx [-dnqxAFLOWZ] [-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 [-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\
-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\
@@ -1643,6 +1644,7 @@ usage(void)
-g X: write character X instead of random generated data\n\
-i logdev: do integrity testing, logdev is the dm log writes device\n\
-j logid: prefix debug log messsages with this id\n\
-k: do not truncate existing file and use its size as upper bound on file size\n\
-l flen: the upper bound on file size (default 262144)\n\
-m startop:endop: monitor (print debug output) specified byte range (default 0:infinity)\n\
-n: no verifications of file size\n\
@@ -1833,7 +1835,7 @@ __test_fallocate(int mode, const char *mode_str)
#ifdef HAVE_LINUX_FALLOC_H
int ret = 0;
if (!lite) {
if (fallocate(fd, mode, 0, 1) && errno == EOPNOTSUPP) {
if (fallocate(fd, mode, file_size, 1) && errno == EOPNOTSUPP) {
if(!quiet)
fprintf(stderr,
"main: filesystem does not support "
@@ -1841,7 +1843,7 @@ __test_fallocate(int mode, const char *mode_str)
mode_str);
} else {
ret = 1;
if (ftruncate(fd, 0)) {
if (ftruncate(fd, file_size)) {
warn("main: ftruncate");
exit(132);
}
@@ -1865,6 +1867,7 @@ main(int argc, char **argv)
char goodfile[1024];
char logfile[1024];
struct stat statbuf;
int o_flags = O_RDWR|O_CREAT|O_TRUNC;
goodfile[0] = 0;
logfile[0] = 0;
@@ -1878,7 +1881,7 @@ 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:l:m:no:p:qr:s:t:w:xyAD:FKHzCILN:OP:RS:WZ",
"b:c:dfg:i:j:kl:m:no:p:qr:s:t:w:xyAD:FKHzCILN:OP:RS:WZ",
longopts, NULL)) != EOF)
switch (ch) {
case 'b':
@@ -1920,6 +1923,9 @@ main(int argc, char **argv)
exit(101);
}
break;
case 'k':
o_flags &= ~O_TRUNC;
break;
case 'l':
maxfilelen = getnum(optarg, &endp);
if (maxfilelen <= 0)
@@ -2007,6 +2013,7 @@ main(int argc, char **argv)
break;
case 'L':
lite = 1;
o_flags &= ~(O_CREAT|O_TRUNC);
break;
case 'N':
numops = getnum(optarg, &endp);
@@ -2046,6 +2053,7 @@ main(int argc, char **argv)
break;
case 'Z':
o_direct = O_DIRECT;
o_flags |= O_DIRECT;
break;
case 255: /* --record-ops */
if (optarg)
@@ -2089,8 +2097,7 @@ main(int argc, char **argv)
signal(SIGUSR2, cleanup);
srandom(seed);
fd = open(fname,
O_RDWR|(lite ? 0 : O_CREAT|O_TRUNC)|o_direct, 0666);
fd = open(fname, o_flags, 0666);
if (fd < 0) {
prterr(fname);
exit(91);
@@ -2150,9 +2157,9 @@ main(int argc, char **argv)
aio_setup();
#endif
if (lite) {
if (!(o_flags & O_TRUNC)) {
off_t ret;
file_size = maxfilelen = lseek(fd, (off_t)0, SEEK_END);
file_size = maxfilelen = biggest = lseek(fd, (off_t)0, SEEK_END);
if (file_size == (off_t)-1) {
prterr(fname);
warn("main: lseek eof");
@@ -2189,8 +2196,23 @@ main(int argc, char **argv)
maxfilelen);
exit(98);
}
} else
} else {
ssize_t ret, len = file_size;
off_t off = 0;
while (len > 0) {
ret = read(fd, good_buf + off, len);
if (ret == -1) {
prterr(fname);
warn("main: error on read");
exit(98);
}
len -= ret;
off += ret;
}
check_trunc_hack();
}
if (fallocate_calls)
fallocate_calls = test_fallocate(0);