@@ -132,6 +132,7 @@ unsigned long simulatedopcount = 0; /* -b flag */
int closeprob = 0; /* -c flag */
int debug = 0; /* -d flag */
unsigned long debugstart = 0; /* -D flag */
+char filldata = 0; /* -g flag */
int logid = 0; /* -j flag */
int flush = 0; /* -f flag */
int do_fsync = 0; /* -y flag */
@@ -814,9 +815,13 @@ void
gendata(char *original_buf, char *good_buf, unsigned offset, unsigned size)
{
while (size--) {
- good_buf[offset] = testcalls % 256;
- if (offset % 2)
- good_buf[offset] += original_buf[offset];
+ if (filldata) {
+ good_buf[offset] = filldata;
+ } else {
+ good_buf[offset] = testcalls % 256;
+ if (offset % 2)
+ good_buf[offset] += original_buf[offset];
+ }
offset++;
}
}
@@ -1631,11 +1636,12 @@ void
usage(void)
{
fprintf(stdout, "usage: %s",
- "fsx [-dnqxAFLOWZ] [-b opnum] [-c Prob] [-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 [-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\
-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\
-f flush and invalidate cache after I/O\n\
+ -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 logs with this id\n\
-l flen: the upper bound on file size (default 262144)\n\
@@ -1873,7 +1879,7 @@ main(int argc, char **argv)
setvbuf(stdout, (char *)0, _IOLBF, 0); /* line buffered stdout */
while ((ch = getopt_long(argc, argv,
- "b:c:dfi:j:l:m:no:p:qr:s:t:w:xyAD:FKHzCILN:OP:RS:WZ",
+ "b:c:dfg:i:j:l:m:no:p:qr:s:t:w:xyAD:FKHzCILN:OP:RS:WZ",
longopts, NULL)) != EOF)
switch (ch) {
case 'b':
@@ -1900,6 +1906,9 @@ main(int argc, char **argv)
case 'f':
flush = 1;
break;
+ case 'g':
+ filldata = *optarg;
+ break;
case 'i':
integrity = 1;
logdev = strdup(optarg);
-g X: write character X instead of random generated data This is useful to compare holes between good and bad files because hexdump of good and bad files compacts the contigious ranges of X and zeroes. Signed-off-by: Amir Goldstein <amir73il@gmail.com> --- ltp/fsx.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-)