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adds updating db-format signature during DB open.

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Fixes https://github.com/erthink/libmdbx/issues/238.
This commit is contained in:
Leonid Yuriev 2021-10-22 19:23:33 +03:00
parent fcb8cd2145
commit 331232858a
1 changed files with 20 additions and 0 deletions
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20
src/core.c
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@ -11868,6 +11868,26 @@ __cold static int mdbx_setup_dxb(MDBX_env *env, const int lck_rc,
atomic_store32(&env->me_lck->mti_discarded_tail,
bytes2pgno(env, used_aligned2os_bytes), mo_Relaxed);
if ((env->me_flags & MDBX_RDONLY) == 0 && env->me_stuck_meta < 0) {
for (int n = 0; n < 3; ++n) {
MDBX_meta *const meta = METAPAGE(env, n);
if (unlikely(unaligned_peek_u64(4, &meta->mm_magic_and_version) !=
MDBX_DATA_MAGIC)) {
const txnid_t txnid = mdbx_meta_txnid_fluid(env, meta);
mdbx_notice("%s %s"
"meta[%u], txnid %" PRIaTXN,
"updating db-format signature for",
META_IS_STEADY(meta) ? "stead-" : "weak-", n, txnid);
err = mdbx_override_meta(env, n, txnid, meta);
if (unlikely(err != MDBX_SUCCESS)) {
mdbx_error("%s meta[%u], txnid %" PRIaTXN ", error %d",
"updating db-format signature for", n, txnid, err);
return err;
}
}
}
}
} /* lck exclusive, lck_rc == MDBX_RESULT_TRUE */
//---------------------------------------------------- setup madvise/readahead