diff options
| author | Qu Wenruo <wqu@suse.com> | 2024-06-14 13:52:31 +0930 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2024-07-11 15:33:30 +0200 |
| commit | 32e6216512b4119c1bb317c7305708f725832ff7 (patch) | |
| tree | be8a3f42519a2f51a1f7411e9b1b9ee0b2caec8a /fs/btrfs/super.c | |
| parent | 169aaaf2e0be615ffd4a12adc02db5eb86e8eee1 (diff) | |
btrfs: introduce new "rescue=ignoresuperflags" mount option
This new mount option allows the kernel to skip the super flags check,
it's mostly to allow the kernel to do a rescue mount of an interrupted
checksum conversion.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 65d2abdc9975..0eda8c21d861 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -177,6 +177,7 @@ enum { Opt_rescue_ignorebadroots, Opt_rescue_ignoredatacsums, Opt_rescue_ignoremetacsums, + Opt_rescue_ignoresuperflags, Opt_rescue_parameter_all, }; @@ -187,8 +188,10 @@ static const struct constant_table btrfs_parameter_rescue[] = { { "ibadroots", Opt_rescue_ignorebadroots }, { "ignoredatacsums", Opt_rescue_ignoredatacsums }, { "ignoremetacsums", Opt_rescue_ignoremetacsums}, + { "ignoresuperflags", Opt_rescue_ignoresuperflags}, { "idatacsums", Opt_rescue_ignoredatacsums }, { "imetacsums", Opt_rescue_ignoremetacsums}, + { "isuperflags", Opt_rescue_ignoresuperflags}, { "all", Opt_rescue_parameter_all }, {} }; @@ -577,9 +580,13 @@ static int btrfs_parse_param(struct fs_context *fc, struct fs_parameter *param) case Opt_rescue_ignoremetacsums: btrfs_set_opt(ctx->mount_opt, IGNOREMETACSUMS); break; + case Opt_rescue_ignoresuperflags: + btrfs_set_opt(ctx->mount_opt, IGNORESUPERFLAGS); + break; case Opt_rescue_parameter_all: btrfs_set_opt(ctx->mount_opt, IGNOREDATACSUMS); btrfs_set_opt(ctx->mount_opt, IGNOREMETACSUMS); + btrfs_set_opt(ctx->mount_opt, IGNORESUPERFLAGS); btrfs_set_opt(ctx->mount_opt, IGNOREBADROOTS); btrfs_set_opt(ctx->mount_opt, NOLOGREPLAY); break; @@ -655,7 +662,8 @@ bool btrfs_check_options(const struct btrfs_fs_info *info, unsigned long *mount_ (check_ro_option(info, *mount_opt, BTRFS_MOUNT_NOLOGREPLAY, "nologreplay") || check_ro_option(info, *mount_opt, BTRFS_MOUNT_IGNOREBADROOTS, "ignorebadroots") || check_ro_option(info, *mount_opt, BTRFS_MOUNT_IGNOREDATACSUMS, "ignoredatacsums") || - check_ro_option(info, *mount_opt, BTRFS_MOUNT_IGNOREMETACSUMS, "ignoremetacsums"))) + check_ro_option(info, *mount_opt, BTRFS_MOUNT_IGNOREMETACSUMS, "ignoremetacsums") || + check_ro_option(info, *mount_opt, BTRFS_MOUNT_IGNORESUPERFLAGS, "ignoresuperflags"))) ret = false; if (btrfs_fs_compat_ro(info, FREE_SPACE_TREE) && @@ -1073,6 +1081,8 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) print_rescue_option(seq, "ignoredatacsums", &printed); if (btrfs_test_opt(info, IGNOREMETACSUMS)) print_rescue_option(seq, "ignoremetacsums", &printed); + if (btrfs_test_opt(info, IGNORESUPERFLAGS)) + print_rescue_option(seq, "ignoresuperflags", &printed); if (btrfs_test_opt(info, FLUSHONCOMMIT)) seq_puts(seq, ",flushoncommit"); if (btrfs_test_opt(info, DISCARD_SYNC)) @@ -1431,6 +1441,7 @@ static void btrfs_emit_options(struct btrfs_fs_info *info, btrfs_info_if_set(info, old, IGNOREBADROOTS, "ignoring bad roots"); btrfs_info_if_set(info, old, IGNOREDATACSUMS, "ignoring data csums"); btrfs_info_if_set(info, old, IGNOREMETACSUMS, "ignoring meta csums"); + btrfs_info_if_set(info, old, IGNORESUPERFLAGS, "ignoring unknown super block flags"); btrfs_info_if_unset(info, old, NODATACOW, "setting datacow"); btrfs_info_if_unset(info, old, SSD, "not using ssd optimizations"); |