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https://github.com/MariaDB/server.git
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Bug#23710
At InnoDB startup consider the case where log scan went beyond checkpoint_lsn as a crash and initiate crash recovery code path. reviewed by: Heikki
This commit is contained in:
inaam
parent
88662a2da4
commit
d5ffc8ea1e
1 changed files with 147 additions and 100 deletions
247
log/log0recv.c
247
log/log0recv.c
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@ -57,6 +57,16 @@ ibool recv_needed_recovery = FALSE;
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ibool recv_lsn_checks_on = FALSE;
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/* There are two conditions under which we scan the logs, the first
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is normal startup and the second is when we do a recovery from an
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archive.
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This flag is set if we are doing a scan from the last checkpoint during
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startup. If we find log entries that were written after the last checkpoint
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we know that the server was not cleanly shutdown. We must then initialize
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the crash recovery environment before attempting to store these entries in
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the log hash table. */
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ibool recv_log_scan_is_startup_type = FALSE;
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/* If the following is TRUE, the buffer pool file pages must be invalidated
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after recovery and no ibuf operations are allowed; this becomes TRUE if
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the log record hash table becomes too full, and log records must be merged
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@ -99,6 +109,16 @@ the recovery failed and the database may be corrupt. */
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dulint recv_max_page_lsn;
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/* prototypes */
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/***********************************************************
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Initialize crash recovery environment. Can be called iff
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recv_needed_recovery == FALSE. */
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static
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void
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recv_init_crash_recovery(void);
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/*===========================*/
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/************************************************************
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Creates the recovery system. */
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@ -2284,6 +2304,23 @@ recv_scan_log_recs(
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if (ut_dulint_cmp(scanned_lsn, recv_sys->scanned_lsn) > 0) {
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/* We have found more entries. If this scan is
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of startup type, we must initiate crash recovery
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environment before parsing these log records. */
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if (recv_log_scan_is_startup_type
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&& !recv_needed_recovery) {
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fprintf(stderr,
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"InnoDB: Log scan progressed"
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" past the checkpoint lsn %lu %lu\n",
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(ulong) ut_dulint_get_high(
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recv_sys->scanned_lsn),
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(ulong) ut_dulint_get_low(
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recv_sys->scanned_lsn));
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recv_init_crash_recovery();
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}
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/* We were able to find more log data: add it to the
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parsing buffer if parse_start_lsn is already
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non-zero */
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@ -2405,6 +2442,48 @@ recv_group_scan_log_recs(
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#endif /* UNIV_DEBUG */
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}
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/***********************************************************
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Initialize crash recovery environment. Can be called iff
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recv_needed_recovery == FALSE. */
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static
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void
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recv_init_crash_recovery(void)
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/*==========================*/
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{
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ut_a(!recv_needed_recovery);
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recv_needed_recovery = TRUE;
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ut_print_timestamp(stderr);
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fprintf(stderr,
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" InnoDB: Database was not"
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" shut down normally!\n"
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"InnoDB: Starting crash recovery.\n");
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fprintf(stderr,
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"InnoDB: Reading tablespace information"
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" from the .ibd files...\n");
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fil_load_single_table_tablespaces();
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/* If we are using the doublewrite method, we will
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check if there are half-written pages in data files,
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and restore them from the doublewrite buffer if
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possible */
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if (srv_force_recovery < SRV_FORCE_NO_LOG_REDO) {
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fprintf(stderr,
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"InnoDB: Restoring possible"
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" half-written data pages from"
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" the doublewrite\n"
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"InnoDB: buffer...\n");
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trx_sys_doublewrite_init_or_restore_pages(TRUE);
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}
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}
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/************************************************************
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Recovers from a checkpoint. When this function returns, the database is able
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to start processing of new user transactions, but the function
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@ -2532,92 +2611,6 @@ recv_recovery_from_checkpoint_start(
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recv_sys->recovered_lsn = checkpoint_lsn;
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srv_start_lsn = checkpoint_lsn;
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/* NOTE: we always do a 'recovery' at startup, but only if
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there is something wrong we will print a message to the
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user about recovery: */
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if (ut_dulint_cmp(checkpoint_lsn, max_flushed_lsn) != 0
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|| ut_dulint_cmp(checkpoint_lsn, min_flushed_lsn) != 0) {
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if (ut_dulint_cmp(checkpoint_lsn, max_flushed_lsn)
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< 0) {
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fprintf(stderr,
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"InnoDB: #########################"
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"#################################\n"
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"InnoDB: "
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"WARNING!\n"
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"InnoDB: The log sequence number"
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" in ibdata files is higher\n"
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"InnoDB: than the log sequence number"
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" in the ib_logfiles! Are you sure\n"
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"InnoDB: you are using the right"
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" ib_logfiles to start up"
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" the database?\n"
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"InnoDB: Log sequence number in"
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" ib_logfiles is %lu %lu, log\n"
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"InnoDB: sequence numbers stamped"
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" to ibdata file headers are between\n"
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"InnoDB: %lu %lu and %lu %lu.\n"
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"InnoDB: #########################"
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"#################################\n",
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(ulong) ut_dulint_get_high(
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checkpoint_lsn),
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(ulong) ut_dulint_get_low(
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checkpoint_lsn),
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(ulong) ut_dulint_get_high(
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min_flushed_lsn),
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(ulong) ut_dulint_get_low(
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min_flushed_lsn),
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(ulong) ut_dulint_get_high(
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max_flushed_lsn),
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(ulong) ut_dulint_get_low(
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max_flushed_lsn));
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}
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recv_needed_recovery = TRUE;
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ut_print_timestamp(stderr);
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fprintf(stderr,
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" InnoDB: Database was not"
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" shut down normally!\n"
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"InnoDB: Starting crash recovery.\n");
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fprintf(stderr,
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"InnoDB: Reading tablespace information"
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" from the .ibd files...\n");
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fil_load_single_table_tablespaces();
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/* If we are using the doublewrite method, we will
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check if there are half-written pages in data files,
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and restore them from the doublewrite buffer if
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possible */
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if (srv_force_recovery < SRV_FORCE_NO_LOG_REDO) {
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fprintf(stderr,
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"InnoDB: Restoring possible"
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" half-written data pages from"
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" the doublewrite\n"
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"InnoDB: buffer...\n");
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trx_sys_doublewrite_init_or_restore_pages(
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TRUE);
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}
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ut_print_timestamp(stderr);
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fprintf(stderr,
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" InnoDB: Starting log scan"
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" based on checkpoint at\n"
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"InnoDB: log sequence number %lu %lu.\n",
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(ulong) ut_dulint_get_high(checkpoint_lsn),
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(ulong) ut_dulint_get_low(checkpoint_lsn));
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} else {
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/* Init the doublewrite buffer memory structure */
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trx_sys_doublewrite_init_or_restore_pages(FALSE);
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}
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}
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contiguous_lsn = ut_dulint_align_down(recv_sys->scanned_lsn,
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@ -2670,6 +2663,8 @@ recv_recovery_from_checkpoint_start(
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group = UT_LIST_GET_NEXT(log_groups, group);
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}
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/* Set the flag to publish that we are doing startup scan. */
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recv_log_scan_is_startup_type = (type == LOG_CHECKPOINT);
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while (group) {
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old_scanned_lsn = recv_sys->scanned_lsn;
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@ -2691,6 +2686,69 @@ recv_recovery_from_checkpoint_start(
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group = UT_LIST_GET_NEXT(log_groups, group);
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}
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/* Done with startup scan. Clear the flag. */
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recv_log_scan_is_startup_type = FALSE;
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if (type == LOG_CHECKPOINT) {
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/* NOTE: we always do a 'recovery' at startup, but only if
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there is something wrong we will print a message to the
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user about recovery: */
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if (ut_dulint_cmp(checkpoint_lsn, max_flushed_lsn) != 0
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|| ut_dulint_cmp(checkpoint_lsn, min_flushed_lsn) != 0) {
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if (ut_dulint_cmp(checkpoint_lsn, max_flushed_lsn)
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< 0) {
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fprintf(stderr,
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"InnoDB: #########################"
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"#################################\n"
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"InnoDB: "
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"WARNING!\n"
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"InnoDB: The log sequence number"
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" in ibdata files is higher\n"
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"InnoDB: than the log sequence number"
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" in the ib_logfiles! Are you sure\n"
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"InnoDB: you are using the right"
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" ib_logfiles to start up"
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" the database?\n"
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"InnoDB: Log sequence number in"
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" ib_logfiles is %lu %lu, log\n"
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"InnoDB: sequence numbers stamped"
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" to ibdata file headers are between\n"
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"InnoDB: %lu %lu and %lu %lu.\n"
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"InnoDB: #########################"
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"#################################\n",
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(ulong) ut_dulint_get_high(
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checkpoint_lsn),
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(ulong) ut_dulint_get_low(
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checkpoint_lsn),
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(ulong) ut_dulint_get_high(
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min_flushed_lsn),
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(ulong) ut_dulint_get_low(
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min_flushed_lsn),
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(ulong) ut_dulint_get_high(
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max_flushed_lsn),
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(ulong) ut_dulint_get_low(
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max_flushed_lsn));
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}
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if (!recv_needed_recovery) {
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fprintf(stderr,
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"InnoDB: The log sequence number"
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" in ibdata files does not match\n"
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"InnoDB: the log sequence number"
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" in the ib_logfiles!\n");
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recv_init_crash_recovery();
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}
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}
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if (!recv_needed_recovery) {
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/* Init the doublewrite buffer memory structure */
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trx_sys_doublewrite_init_or_restore_pages(FALSE);
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}
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}
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/* We currently have only one log group */
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if (ut_dulint_cmp(group_scanned_lsn, checkpoint_lsn) < 0) {
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ut_print_timestamp(stderr);
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@ -2747,20 +2805,9 @@ recv_recovery_from_checkpoint_start(
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recv_synchronize_groups(up_to_date_group);
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if (!recv_needed_recovery) {
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if (ut_dulint_cmp(checkpoint_lsn, recv_sys->recovered_lsn)
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!= 0) {
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fprintf(stderr,
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"InnoDB: Warning: we did not need to do"
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" crash recovery, but log scan\n"
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"InnoDB: progressed past the checkpoint"
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" lsn %lu %lu up to lsn %lu %lu\n",
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(ulong) ut_dulint_get_high(checkpoint_lsn),
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(ulong) ut_dulint_get_low(checkpoint_lsn),
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(ulong) ut_dulint_get_high(
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recv_sys->recovered_lsn),
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(ulong) ut_dulint_get_low(
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recv_sys->recovered_lsn));
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}
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ut_a(ut_dulint_cmp(checkpoint_lsn,
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recv_sys->recovered_lsn) == 0);
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} else {
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srv_start_lsn = recv_sys->recovered_lsn;
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}
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