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lmdb: update mdb_chk for checkpoints, minor cosmetics.
This is 9/9 for https://github.com/ReOpen/ReOpenLDAP/issues/1 and https://github.com/ReOpen/ReOpenLDAP/issues/2 Change-Id: I05f59313b4346c08bcd63d62e6c48a5f53c47852
This commit is contained in:
Leo Yuriev
parent
1581fecd08
commit
104312d15e
4
lmdb.h
4
lmdb.h
@ -446,6 +446,8 @@ typedef struct MDB_envinfo {
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size_t me_tail_txnid; /**< ID of the last reader transaction */
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unsigned me_maxreaders; /**< max reader slots in the environment */
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unsigned me_numreaders; /**< max reader slots used in the environment */
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size_t me_meta1_txnid, me_meta1_sign;
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size_t me_meta2_txnid, me_meta2_sign;
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} MDB_envinfo;
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/** @brief Return the LMDB library version information.
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@ -695,7 +697,7 @@ int mdb_env_stat(MDB_env *env, MDB_stat *stat);
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* @param[out] stat The address of an #MDB_envinfo structure
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* where the information will be copied
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*/
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int mdb_env_info(MDB_env *env, MDB_envinfo *stat);
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int mdb_env_info(MDB_env *env, MDB_envinfo *info);
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/** @brief Flush the data buffers to disk.
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*
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23
mdb.c
23
mdb.c
@ -9039,21 +9039,32 @@ mdb_env_stat(MDB_env *env, MDB_stat *arg)
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int ESECT
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mdb_env_info(MDB_env *env, MDB_envinfo *arg)
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{
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MDB_meta *meta;
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MDB_meta *meta, *m1, *m2;
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if (env == NULL || arg == NULL)
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return EINVAL;
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meta = mdb_meta_head_r(env);
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arg->me_mapaddr = meta->mm_address;
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m1 = METAPAGE_1(env);
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m2 = METAPAGE_2(env);
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arg->me_mapsize = env->me_mapsize;
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arg->me_maxreaders = env->me_maxreaders;
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arg->me_numreaders = env->me_txns->mti_numreaders;
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arg->me_last_pgno = meta->mm_last_pg;
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arg->me_last_txnid = meta->mm_txnid;
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arg->me_tail_txnid = 0;
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do {
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meta = mdb_meta_head_r(env);
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arg->me_meta1_txnid = m1->mm_txnid;
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arg->me_meta1_sign = m1->mm_datasync_sign;
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arg->me_meta2_txnid = m2->mm_txnid;
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arg->me_meta2_sign = m2->mm_datasync_sign;
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arg->me_last_pgno = meta->mm_last_pg;
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arg->me_last_txnid = meta->mm_txnid;
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} while (unlikely( meta->mm_txnid != env->me_txns->mti_txnid
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|| arg->me_meta1_sign != m1->mm_datasync_sign
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|| arg->me_meta2_sign != m2->mm_datasync_sign ));
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arg->me_mapaddr = meta->mm_address;
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arg->me_tail_txnid = 0;
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MDB_reader *r = env->me_txns->mti_readers;
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int i;
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arg->me_tail_txnid = arg->me_last_txnid;
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70
mdb_chk.c
70
mdb_chk.c
@ -244,10 +244,10 @@ static long handle_freedb(size_t record_number, MDB_val *key, MDB_val* data) {
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pg += span;
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for (; i >= span && iptr[i - span] == pg; span++, pg++) ;
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}
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if (verbose > 1)
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if (verbose > 2)
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print(" - transaction %zu, %zd pages, maxspan %zd%s\n",
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*(size_t *)key->mv_data, number, span, bad);
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if (verbose > 2) {
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if (verbose > 3) {
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int j = number - 1;
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while (j >= 0) {
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pg = iptr[j];
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@ -430,6 +430,21 @@ static void usage(char *prog)
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exit(EXIT_FAILURE);
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}
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const char* meta_synctype(size_t sign) {
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switch(sign) {
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case 0:
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return "legacy/unknown";
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case 1:
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return "weak";
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default:
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return "steady";
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}
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}
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int meta_lt(size_t txn1, size_t sign1, size_t txn2, size_t sign2) {
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return ((sign1 > 1) == (sign2 > 1)) ? txn1 < txn2 : sign2 > 1;
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}
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int main(int argc, char *argv[])
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{
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int i, rc;
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@ -437,6 +452,7 @@ int main(int argc, char *argv[])
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char *envname;
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int envflags = 0;
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long problems_maindb = 0, problems_freedb = 0, problems_deep = 0;
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int problems_meta = 0;
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size_t n;
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if (argc < 2) {
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@ -480,6 +496,8 @@ int main(int argc, char *argv[])
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signal(SIGTERM, signal_hanlder);
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envname = argv[optind];
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print("Running mdb_chk for '%s'...\n", envname);
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rc = mdb_env_create(&env);
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if (rc) {
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error("mdb_env_create failed, error %d %s\n", rc, mdb_strerror(rc));
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@ -523,15 +541,50 @@ int main(int argc, char *argv[])
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}
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if (verbose) {
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print(" - map size %zu (%.1fMb, %.1fGb)\n", info.me_mapsize,
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(double) info.me_mapsize / (1024 * 1024),
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(double) info.me_mapsize / (1024 * 1024 * 1024));
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double k = 1024.0;
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const char sf[] = "KMGTPEZY"; /* LY: Kilo, Mega, Giga, Tera, Peta, Exa, Zetta, Yotta! */
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for(i = 0; sf[i+1] && info.me_mapsize / k > 1000.0; ++i)
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k *= 1024;
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print(" - map size %zu (%.1f%cb)\n", info.me_mapsize,
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info.me_mapsize / k, sf[i]);
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if (info.me_mapaddr)
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print(" - mapaddr %p\n", info.me_mapaddr);
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print(" - pagesize %u, max keysize %zu, max readers %u\n",
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stat.ms_psize, maxkeysize, info.me_maxreaders);
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print(" - last txn %zu, tail %zu (%zi)\n", info.me_last_txnid,
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info.me_tail_txnid, info.me_tail_txnid - info.me_last_txnid);
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print(" - transactions: last %zu, bottom %zu, lag reading %zi\n", info.me_last_txnid,
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info.me_tail_txnid, info.me_last_txnid - info.me_tail_txnid);
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print(" - meta-1: %s %zu, %s",
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meta_synctype(info.me_meta1_sign), info.me_meta1_txnid,
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meta_lt(info.me_meta1_txnid, info.me_meta1_sign,
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info.me_meta2_txnid, info.me_meta2_sign) ? "tail" : "head");
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print(info.me_meta1_txnid > info.me_last_txnid
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? ", rolled-back %zu (%zu >>> %zu)\n" : "\n",
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info.me_meta1_txnid - info.me_last_txnid,
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info.me_meta1_txnid, info.me_last_txnid);
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print(" - meta-2: %s %zu, %s",
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meta_synctype(info.me_meta2_sign), info.me_meta2_txnid,
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meta_lt(info.me_meta2_txnid, info.me_meta2_sign,
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info.me_meta1_txnid, info.me_meta1_sign) ? "tail" : "head");
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print(info.me_meta2_txnid > info.me_last_txnid
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? ", rolled-back %zu (%zu >>> %zu)\n" : "\n",
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info.me_meta2_txnid - info.me_last_txnid,
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info.me_meta2_txnid, info.me_last_txnid);
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}
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if (! meta_lt(info.me_meta1_txnid, info.me_meta1_sign,
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info.me_meta2_txnid, info.me_meta2_sign)
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&& info.me_meta1_txnid != info.me_last_txnid) {
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print(" - meta1 txn-id mismatch\n");
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++problems_meta;
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}
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if (! meta_lt(info.me_meta2_txnid, info.me_meta2_sign,
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info.me_meta1_txnid, info.me_meta1_sign)
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&& info.me_meta2_txnid != info.me_last_txnid) {
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print(" - meta2 txn-id mismatch\n");
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++problems_meta;
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}
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rc = mdb_txn_begin(env, NULL, MDB_RDONLY, &txn);
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@ -610,9 +663,10 @@ bailout:
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free(pagemap);
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if (rc)
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return EXIT_FAILURE + 2;
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if (problems_maindb || problems_freedb)
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if (problems_meta || problems_maindb || problems_freedb)
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return EXIT_FAILURE + 1;
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if (problems_deep)
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return EXIT_FAILURE;
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print("No error is detected.\n");
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return EXIT_SUCCESS;
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}
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