]> git.sesse.net Git - bcachefs-tools-debian/blobdiff - libbcachefs/recovery.c
Update bcachefs sources to 2a6125decb43 bcachefs: bch_sb_field_downgrade
[bcachefs-tools-debian] / libbcachefs / recovery.c
index 5933b02e49e0e5f83f4ecc0f66cf8403aa9a992b..3e49209db2dec37f9cd97aa6fdfd0fda61f479ca 100644 (file)
@@ -27,6 +27,7 @@
 #include "recovery.h"
 #include "replicas.h"
 #include "sb-clean.h"
+#include "sb-downgrade.h"
 #include "snapshot.h"
 #include "subvolume.h"
 #include "super-io.h"
@@ -503,7 +504,7 @@ static int bch2_fs_upgrade_for_subvolumes(struct bch_fs *c)
 }
 
 const char * const bch2_recovery_passes[] = {
-#define x(_fn, _when)  #_fn,
+#define x(_fn, ...)    #_fn,
        BCH_RECOVERY_PASSES()
 #undef x
        NULL
@@ -539,18 +540,47 @@ struct recovery_pass_fn {
 };
 
 static struct recovery_pass_fn recovery_pass_fns[] = {
-#define x(_fn, _when)  { .fn = bch2_##_fn, .when = _when },
+#define x(_fn, _id, _when)     { .fn = bch2_##_fn, .when = _when },
        BCH_RECOVERY_PASSES()
 #undef x
 };
 
-static void check_version_upgrade(struct bch_fs *c)
+u64 bch2_recovery_passes_to_stable(u64 v)
+{
+       static const u8 map[] = {
+#define x(n, id, ...)  [BCH_RECOVERY_PASS_##n] = BCH_RECOVERY_PASS_STABLE_##n,
+       BCH_RECOVERY_PASSES()
+#undef x
+       };
+
+       u64 ret = 0;
+       for (unsigned i = 0; i < ARRAY_SIZE(map); i++)
+               if (v & BIT_ULL(i))
+                       ret |= BIT_ULL(map[i]);
+       return ret;
+}
+
+u64 bch2_recovery_passes_from_stable(u64 v)
+{
+       static const u8 map[] = {
+#define x(n, id, ...)  [BCH_RECOVERY_PASS_STABLE_##n] = BCH_RECOVERY_PASS_##n,
+       BCH_RECOVERY_PASSES()
+#undef x
+       };
+
+       u64 ret = 0;
+       for (unsigned i = 0; i < ARRAY_SIZE(map); i++)
+               if (v & BIT_ULL(i))
+                       ret |= BIT_ULL(map[i]);
+       return ret;
+}
+
+static u64 check_version_upgrade(struct bch_fs *c)
 {
        unsigned latest_compatible = bch2_latest_compatible_version(c->sb.version);
        unsigned latest_version = bcachefs_metadata_version_current;
        unsigned old_version = c->sb.version_upgrade_complete ?: c->sb.version;
        unsigned new_version = 0;
-       u64 recovery_passes;
 
        if (old_version < bcachefs_metadata_required_upgrade_below) {
                if (c->opts.version_upgrade == BCH_VERSION_UPGRADE_incompatible ||
@@ -594,27 +624,25 @@ static void check_version_upgrade(struct bch_fs *c)
                bch2_version_to_text(&buf, new_version);
                prt_newline(&buf);
 
-               recovery_passes = bch2_upgrade_recovery_passes(c, old_version, new_version);
+               u64 recovery_passes = bch2_upgrade_recovery_passes(c, old_version, new_version);
                if (recovery_passes) {
-                       if ((recovery_passes & RECOVERY_PASS_ALL_FSCK) == RECOVERY_PASS_ALL_FSCK)
-                               prt_str(&buf, "fsck required");
-                       else {
-                               prt_str(&buf, "running recovery passes: ");
-                               prt_bitflags(&buf, bch2_recovery_passes, recovery_passes);
-                       }
-
-                       c->recovery_passes_explicit |= recovery_passes;
-                       c->opts.fix_errors = FSCK_FIX_yes;
+                       prt_str(&buf, "  running recovery passes: ");
+                       prt_bitflags(&buf, bch2_recovery_passes, recovery_passes);
                }
 
                bch_info(c, "%s", buf.buf);
 
-               mutex_lock(&c->sb_lock);
                bch2_sb_upgrade(c, new_version);
-               mutex_unlock(&c->sb_lock);
 
                printbuf_exit(&buf);
+
+               struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
+               ext->recovery_passes_required[0] |=
+                       cpu_to_le64(bch2_recovery_passes_to_stable(recovery_passes));
+               return true;
        }
+
+       return false;
 }
 
 u64 bch2_fsck_recovery_passes(void)
@@ -709,7 +737,6 @@ int bch2_fs_recovery(struct bch_fs *c)
        struct bch_sb_field_clean *clean = NULL;
        struct jset *last_journal_entry = NULL;
        u64 last_seq = 0, blacklist_seq, journal_seq;
-       bool write_sb = false;
        int ret = 0;
 
        if (c->sb.clean) {
@@ -737,15 +764,81 @@ int bch2_fs_recovery(struct bch_fs *c)
                goto err;
        }
 
-       if (!(c->opts.nochanges && c->opts.norecovery))
-               check_version_upgrade(c);
-
        if (c->opts.fsck && c->opts.norecovery) {
                bch_err(c, "cannot select both norecovery and fsck");
                ret = -EINVAL;
                goto err;
        }
 
+       if (!(c->opts.nochanges && c->opts.norecovery)) {
+               mutex_lock(&c->sb_lock);
+               bool write_sb = false;
+
+               struct bch_sb_field_ext *ext =
+                       bch2_sb_field_get_minsize(&c->disk_sb, ext, sizeof(*ext) / sizeof(u64));
+               if (!ext) {
+                       ret = -BCH_ERR_ENOSPC_sb;
+                       mutex_unlock(&c->sb_lock);
+                       goto err;
+               }
+
+               if (BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb)) {
+                       ext->recovery_passes_required[0] |=
+                               cpu_to_le64(bch2_recovery_passes_to_stable(BIT_ULL(BCH_RECOVERY_PASS_check_topology)));
+                       write_sb = true;
+               }
+
+               u64 sb_passes = bch2_recovery_passes_from_stable(le64_to_cpu(ext->recovery_passes_required[0]));
+               if (sb_passes) {
+                       struct printbuf buf = PRINTBUF;
+                       prt_str(&buf, "superblock requires following recovery passes to be run:\n  ");
+                       prt_bitflags(&buf, bch2_recovery_passes, sb_passes);
+                       bch_info(c, "%s", buf.buf);
+                       printbuf_exit(&buf);
+                       c->recovery_passes_explicit |= sb_passes;
+               }
+
+               if (bcachefs_metadata_version_current < c->sb.version) {
+                       struct printbuf buf = PRINTBUF;
+
+                       prt_str(&buf, "Version downgrade required:\n");
+
+                       u64 passes = ext->recovery_passes_required[0];
+                       ret = bch2_sb_set_downgrade(c,
+                                       BCH_VERSION_MINOR(bcachefs_metadata_version_current),
+                                       BCH_VERSION_MINOR(c->sb.version));
+                       if (ret) {
+                               mutex_unlock(&c->sb_lock);
+                               goto err;
+                       }
+
+                       passes = ext->recovery_passes_required[0] & ~passes;
+                       if (passes) {
+                               prt_str(&buf, "  running recovery passes: ");
+                               prt_bitflags(&buf, bch2_recovery_passes,
+                                            bch2_recovery_passes_from_stable(le64_to_cpu(passes)));
+                       }
+
+                       bch_info(c, "%s", buf.buf);
+                       printbuf_exit(&buf);
+
+                       bch2_sb_maybe_downgrade(c);
+                       write_sb = true;
+               }
+
+               if (check_version_upgrade(c))
+                       write_sb = true;
+
+               if (write_sb)
+                       bch2_write_super(c);
+
+               c->recovery_passes_explicit |= bch2_recovery_passes_from_stable(le64_to_cpu(ext->recovery_passes_required[0]));
+               mutex_unlock(&c->sb_lock);
+       }
+
+       if (c->opts.fsck && IS_ENABLED(CONFIG_BCACHEFS_DEBUG))
+               c->recovery_passes_explicit |= BIT_ULL(BCH_RECOVERY_PASS_check_topology);
+
        ret = bch2_blacklist_table_initialize(c);
        if (ret) {
                bch_err(c, "error initializing blacklist table");
@@ -882,11 +975,6 @@ use_clean:
        if (ret)
                goto err;
 
-       if (c->opts.fsck &&
-           (IS_ENABLED(CONFIG_BCACHEFS_DEBUG) ||
-            BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb)))
-               c->recovery_passes_explicit |= BIT_ULL(BCH_RECOVERY_PASS_check_topology);
-
        ret = bch2_run_recovery_passes(c);
        if (ret)
                goto err;
@@ -925,16 +1013,30 @@ use_clean:
        }
 
        mutex_lock(&c->sb_lock);
+       bool write_sb = false;
+
        if (BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb) != le16_to_cpu(c->disk_sb.sb->version)) {
                SET_BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb, le16_to_cpu(c->disk_sb.sb->version));
                write_sb = true;
        }
 
-       if (!test_bit(BCH_FS_error, &c->flags)) {
+       if (!test_bit(BCH_FS_error, &c->flags) &&
+           !(c->disk_sb.sb->compat[0] & cpu_to_le64(1ULL << BCH_COMPAT_alloc_info))) {
                c->disk_sb.sb->compat[0] |= cpu_to_le64(1ULL << BCH_COMPAT_alloc_info);
                write_sb = true;
        }
 
+       if (!test_bit(BCH_FS_error, &c->flags)) {
+               struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);
+               if (ext &&
+                   (!bch2_is_zero(ext->recovery_passes_required, sizeof(ext->recovery_passes_required)) ||
+                    !bch2_is_zero(ext->errors_silent, sizeof(ext->errors_silent)))) {
+                       memset(ext->recovery_passes_required, 0, sizeof(ext->recovery_passes_required));
+                       memset(ext->errors_silent, 0, sizeof(ext->errors_silent));
+                       write_sb = true;
+               }
+       }
+
        if (c->opts.fsck &&
            !test_bit(BCH_FS_error, &c->flags) &&
            !test_bit(BCH_FS_errors_not_fixed, &c->flags)) {