Messages in this thread Patch in this message | | | From | Chao Liu <> | Subject | [f2fs-dev] [PATCH] resize.f2fs: add option to manually specify new overprovision | Date | Fri, 23 Jul 2021 11:58:41 +0800 |
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Make.f2fs supports manually specifying overprovision, and we expect resize.f2fs to support it as well.
This change add a new '-o' option to manually specify overprovision.
Signed-off-by: Chao Liu <liuchao12@xiaomi.com> --- fsck/main.c | 8 ++++++-- fsck/resize.c | 9 ++++++++- 2 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/fsck/main.c b/fsck/main.c index 260ff29..06253e2 100644 --- a/fsck/main.c +++ b/fsck/main.c @@ -124,7 +124,8 @@ void resize_usage() MSG(0, "[options]:\n"); MSG(0, " -d debug level [default:0]\n"); MSG(0, " -i extended node bitmap, node ratio is 20%% by default\n"); - MSG(0, " -s safe resize (Does not resize metadata)"); + MSG(0, " -o overprovision percentage [default:auto]\n"); + MSG(0, " -s safe resize (Does not resize metadata)\n"); MSG(0, " -t target sectors [default: device size]\n"); MSG(0, " -V print the version number and exit\n"); exit(1); @@ -529,7 +530,7 @@ void f2fs_parse_options(int argc, char *argv[]) #endif } else if (!strcmp("resize.f2fs", prog)) { #ifdef WITH_RESIZE - const char *option_string = "d:fst:iV"; + const char *option_string = "d:fst:io:V";
c.func = RESIZE; while ((option = getopt(argc, argv, option_string)) != EOF) { @@ -563,6 +564,9 @@ void f2fs_parse_options(int argc, char *argv[]) case 'i': c.large_nat_bitmap = 1; break; + case 'o': + c.new_overprovision = atof(optarg); + break; case 'V': show_version(prog); exit(0); diff --git a/fsck/resize.c b/fsck/resize.c index 78d578e..85a53c5 100644 --- a/fsck/resize.c +++ b/fsck/resize.c @@ -146,7 +146,9 @@ safe_resize: get_sb(segs_per_sec));
/* Let's determine the best reserved and overprovisioned space */ - c.new_overprovision = get_best_overprovision(sb); + if (c.new_overprovision == 0) + c.new_overprovision = get_best_overprovision(sb); + c.new_reserved_segments = (2 * (100 / c.new_overprovision + 1) + 6) * get_sb(segs_per_sec); @@ -476,6 +478,11 @@ static void rebuild_checkpoint(struct f2fs_sb_info *sbi, set_cp(overprov_segment_count, get_cp(overprov_segment_count) + get_cp(rsvd_segment_count));
+ MSG(0, "Info: Overprovision ratio = %.3lf%%\n", c.new_overprovision); + MSG(0, "Info: Overprovision segments = %u (GC reserved = %u)\n", + get_cp(overprov_segment_count), + c.new_reserved_segments); + free_segment_count = get_free_segments(sbi); new_segment_count = get_newsb(segment_count_main) - get_sb(segment_count_main); -- 2.32.0
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