diff options
| -rw-r--r-- | qemu-img.c | 80 |
1 files changed, 42 insertions, 38 deletions
diff --git a/qemu-img.c b/qemu-img.c index 54ae984979..9d1b6b500a 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -1130,13 +1130,15 @@ out3: static int img_convert(int argc, char **argv) { - int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, + int c, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors, skip_create; + int64_t ret = 0; int progress = 0, flags; const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; BlockDriver *drv, *proto_drv; BlockDriverState **bs = NULL, *out_bs = NULL; - int64_t total_sectors, nb_sectors, sector_num, bs_offset; + int64_t total_sectors, nb_sectors, sector_num, bs_offset, + sector_num_next_status = 0; uint64_t bs_sectors; uint8_t * buf = NULL; const uint8_t *buf1; @@ -1145,7 +1147,6 @@ static int img_convert(int argc, char **argv) QEMUOptionParameter *out_baseimg_param; char *options = NULL; const char *snapshot_name = NULL; - float local_progress = 0; int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ bool quiet = false; Error *local_err = NULL; @@ -1430,10 +1431,6 @@ static int img_convert(int argc, char **argv) sector_num = 0; nb_sectors = total_sectors; - if (nb_sectors != 0) { - local_progress = (float)100 / - (nb_sectors / MIN(nb_sectors, cluster_sectors)); - } for(;;) { int64_t bs_num; @@ -1491,7 +1488,7 @@ static int img_convert(int argc, char **argv) } } sector_num += n; - qemu_progress_print(local_progress, 100); + qemu_progress_print(100.0 * sector_num / total_sectors, 0); } /* signal EOF to align */ bdrv_write_compressed(out_bs, 0, NULL, 0); @@ -1508,21 +1505,13 @@ static int img_convert(int argc, char **argv) sector_num = 0; // total number of sectors converted so far nb_sectors = total_sectors - sector_num; - if (nb_sectors != 0) { - local_progress = (float)100 / - (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512)); - } for(;;) { nb_sectors = total_sectors - sector_num; if (nb_sectors <= 0) { + ret = 0; break; } - if (nb_sectors >= (IO_BUF_SIZE / 512)) { - n = (IO_BUF_SIZE / 512); - } else { - n = nb_sectors; - } while (sector_num - bs_offset >= bs_sectors) { bs_i ++; @@ -1534,34 +1523,46 @@ static int img_convert(int argc, char **argv) sector_num, bs_i, bs_offset, bs_sectors); */ } - if (n > bs_offset + bs_sectors - sector_num) { - n = bs_offset + bs_sectors - sector_num; - } - - /* If the output image is being created as a copy on write image, - assume that sectors which are unallocated in the input image - are present in both the output's and input's base images (no - need to copy them). */ - if (out_baseimg) { - ret = bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, - n, &n1); + if ((out_baseimg || has_zero_init) && + sector_num >= sector_num_next_status) { + n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; + ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, + n, &n1); if (ret < 0) { - error_report("error while reading metadata for sector " - "%" PRId64 ": %s", - sector_num - bs_offset, strerror(-ret)); + error_report("error while reading block status of sector %" + PRId64 ": %s", sector_num - bs_offset, + strerror(-ret)); goto out; } - if (!ret) { + /* If the output image is zero initialized, we are not working + * on a shared base and the input is zero we can skip the next + * n1 sectors */ + if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { sector_num += n1; continue; } - /* The next 'n1' sectors are allocated in the input image. Copy - only those as they may be followed by unallocated sectors. */ - n = n1; - } else { - n1 = n; + /* If the output image is being created as a copy on write + * image, assume that sectors which are unallocated in the + * input image are present in both the output's and input's + * base images (no need to copy them). */ + if (out_baseimg) { + if (!(ret & BDRV_BLOCK_DATA)) { + sector_num += n1; + continue; + } + /* The next 'n1' sectors are allocated in the input image. + * Copy only those as they may be followed by unallocated + * sectors. */ + nb_sectors = n1; + } + /* avoid redundant callouts to get_block_status */ + sector_num_next_status = sector_num + n1; } + n = MIN(nb_sectors, IO_BUF_SIZE / 512); + n = MIN(n, bs_sectors - (sector_num - bs_offset)); + n1 = n; + ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); if (ret < 0) { error_report("error while reading sector %" PRId64 ": %s", @@ -1586,10 +1587,13 @@ static int img_convert(int argc, char **argv) n -= n1; buf1 += n1 * 512; } - qemu_progress_print(local_progress, 100); + qemu_progress_print(100.0 * sector_num / total_sectors, 0); } } out: + if (!ret) { + qemu_progress_print(100, 0); + } qemu_progress_end(); free_option_parameters(create_options); free_option_parameters(param); |