diff options
Diffstat (limited to 'qemu-img.c')
| -rw-r--r-- | qemu-img.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/qemu-img.c b/qemu-img.c index 85d13532e8..480ef8dba3 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -3515,6 +3515,7 @@ static int img_bench(int argc, char **argv) bool is_write = false; int count = 75000; int depth = 64; + int64_t offset = 0; size_t bufsize = 4096; int pattern = 0; int64_t image_size; @@ -3532,7 +3533,7 @@ static int img_bench(int argc, char **argv) {"pattern", required_argument, 0, OPTION_PATTERN}, {0, 0, 0, 0} }; - c = getopt_long(argc, argv, "hc:d:f:nqs:t:w", long_options, NULL); + c = getopt_long(argc, argv, "hc:d:f:no:qs:t:w", long_options, NULL); if (c == -1) { break; } @@ -3570,6 +3571,19 @@ static int img_bench(int argc, char **argv) case 'n': flags |= BDRV_O_NATIVE_AIO; break; + case 'o': + { + char *end; + errno = 0; + offset = qemu_strtosz_suffix(optarg, &end, + QEMU_STRTOSZ_DEFSUFFIX_B); + if (offset < 0|| *end) { + error_report("Invalid offset specified"); + return 1; + } + break; + } + break; case 'q': quiet = true; break; @@ -3639,10 +3653,13 @@ static int img_bench(int argc, char **argv) .bufsize = bufsize, .nrreq = depth, .n = count, + .offset = offset, .write = is_write, }; - printf("Sending %d %s requests, %d bytes each, %d in parallel\n", - data.n, data.write ? "write" : "read", data.bufsize, data.nrreq); + printf("Sending %d %s requests, %d bytes each, %d in parallel " + "(starting at offset %" PRId64 ")\n", + data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, + data.offset); data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); memset(data.buf, pattern, data.nrreq * data.bufsize); |