From: liuchao12 <liucha...@xiaomi.com>
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: liuchao12 <liucha...@xiaomi.com>
---
fsck/main.c | 8 ++++++--
fsck/resize.c | 12 ++++++++++--
2 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/fsck/main.c b/fsck/main.c
index aef797e..3b4da0f 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -121,7 +121,8 @@ 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);
@@ -527,7 +528,7 @@ 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) {
@@ -561,6 +562,9 @@ 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 f1b7701..d19c6fa 100644
--- a/fsck/resize.c
+++ b/fsck/resize.c
@@ -146,12 +146,15 @@ 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);
- if ((get_sb(segment_count_main) - 2) < c.new_reserved_segments ||
+ if (c.new_overprovision == 0 ||
+ (get_sb(segment_count_main) - 2) < c.new_reserved_segments ||
get_sb(segment_count_main) * blks_per_seg >
get_sb(block_count)) {
MSG(0, "\tError: Device size is not sufficient for F2FS volume,
"
@@ -476,6 +479,11 @@ static void rebuild_checkpoint(struct f2fs_sb_info *sbi,
set_cp(overprov_segment_count, get_cp(overprov_segment_count) +
get_cp(rsvd_segment_count));
+ DBG(0, "Info: Overprovision ratio = %.3lf%%\n", c.new_overprovision);
+ DBG(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);
--
2.36.1
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