Using command line options --start-sector and --end-sector, only
operations acting on the specified target device range will be
replayed.
Single vebbose mode (-v) prints out only replayed operations.
Double verbose mode (-vv) prints out also skipped operations.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
+/*
+ * @log: the log we are replaying.
+ * @entry: entry to be replayed.
+ *
+ * @return: 0 if we should replay the entry, > 0 if we should skip it.
+ *
+ * Should we skip the entry in our log or replay onto the replay device.
+ */
+int log_should_skip(struct log *log, struct log_write_entry *entry)
+{
+ u64 sector = le64_to_cpu(entry->sector);
+ u64 nr_sectors = le64_to_cpu(entry->nr_sectors);
+
+ if (!nr_sectors)
+ return 0;
+ if (sector + nr_sectors <= log->start_sector ||
+ sector > log->end_sector)
+ return 1;
+ return 0;
+}
+
/*
* @entry: entry to be replayed.
*
/*
* @entry: entry to be replayed.
*
char *buf;
ssize_t ret;
off_t offset;
char *buf;
ssize_t ret;
off_t offset;
if (log->cur_entry >= log->nr_entries)
return 1;
if (log->cur_entry >= log->nr_entries)
return 1;
log->cur_pos += read_size;
}
log->cur_pos += read_size;
}
- if (log_writes_verbose) {
- printf("replaying %d@%llu: sector %llu, size %llu, flags %llu\n",
+ skip = log_should_skip(log, entry);
+ if (log_writes_verbose > 1 || (log_writes_verbose && !skip)) {
+ printf("%s %d@%llu: sector %llu, size %llu, flags %llu\n",
+ skip ? "skipping" : "replaying",
(int)log->cur_entry - 1, log->cur_pos / log->sectorsize,
(unsigned long long)le64_to_cpu(entry->sector),
(unsigned long long)size,
(int)log->cur_entry - 1, log->cur_pos / log->sectorsize,
(unsigned long long)le64_to_cpu(entry->sector),
(unsigned long long)size,
if (flags & LOG_DISCARD_FLAG)
return log_discard(log, entry);
if (flags & LOG_DISCARD_FLAG)
return log_discard(log, entry);
+ if (skip) {
+ log->cur_pos = lseek(log->logfd, size, SEEK_CUR);
+ if (log->cur_pos == (off_t)-1) {
+ fprintf(stderr, "Error seeking in log: %d\n", errno);
+ return -1;
+ }
+ return 0;
+ }
+
buf = malloc(size);
if (!buf) {
fprintf(stderr, "Error allocating buffer %llu entry %llu\n", (unsigned long long)size, (unsigned long long)log->cur_entry - 1);
buf = malloc(size);
if (!buf) {
fprintf(stderr, "Error allocating buffer %llu entry %llu\n", (unsigned long long)size, (unsigned long long)log->cur_entry - 1);
int replayfd;
unsigned long flags;
u64 sectorsize;
int replayfd;
unsigned long flags;
u64 sectorsize;
+ u64 start_sector;
+ u64 end_sector;
u64 nr_entries;
u64 cur_entry;
u64 max_zero_size;
u64 nr_entries;
u64 cur_entry;
u64 max_zero_size;
+ START_SECTOR,
+ END_SECTOR,
};
static struct option long_options[] = {
};
static struct option long_options[] = {
{"fsck", required_argument, NULL, 0},
{"check", required_argument, NULL, 0},
{"start-mark", required_argument, NULL, 0},
{"fsck", required_argument, NULL, 0},
{"check", required_argument, NULL, 0},
{"start-mark", required_argument, NULL, 0},
+ {"start-sector", required_argument, NULL, 0},
+ {"end-sector", required_argument, NULL, 0},
"--check\n");
fprintf(stderr, "\t--check [<number>|flush|fua] when to check the "
"file system, mush specify --fsck\n");
"--check\n");
fprintf(stderr, "\t--check [<number>|flush|fua] when to check the "
"file system, mush specify --fsck\n");
+ fprintf(stderr, "\t--start-sector <sector> - replay ops on region "
+ "from <sector> onto <device>\n");
+ fprintf(stderr, "\t--end-sector <sector> - replay ops on region "
+ "to <sector> onto <device>\n");
+ fprintf(stderr, "\t-v or --verbose - print replayed ops\n");
+ fprintf(stderr, "\t-vv - print also skipped ops\n");
struct log_write_entry *entry;
u64 stop_flags = 0;
u64 start_entry = 0;
struct log_write_entry *entry;
u64 stop_flags = 0;
u64 start_entry = 0;
+ u64 start_sector = 0;
+ u64 end_sector = -1ULL;
u64 run_limit = 0;
u64 num_entries = 0;
u64 check_number = 0;
u64 run_limit = 0;
u64 num_entries = 0;
u64 check_number = 0;
+ case START_SECTOR:
+ start_sector = strtoull(optarg, &tmp, 0);
+ if (tmp && *tmp != '\0') {
+ fprintf(stderr, "Invalid sector number\n");
+ exit(1);
+ }
+ tmp = NULL;
+ break;
+ case END_SECTOR:
+ end_sector = strtoull(optarg, &tmp, 0);
+ if (tmp && *tmp != '\0') {
+ fprintf(stderr, "Invalid sector number\n");
+ exit(1);
+ }
+ tmp = NULL;
+ break;
if (!discard)
log->flags |= LOG_IGNORE_DISCARD;
if (!discard)
log->flags |= LOG_IGNORE_DISCARD;
+ log->start_sector = start_sector;
+ log->end_sector = end_sector;
+
entry = malloc(log->sectorsize);
if (!entry) {
fprintf(stderr, "Couldn't allocate buffer\n");
entry = malloc(log->sectorsize);
if (!entry) {
fprintf(stderr, "Couldn't allocate buffer\n");