diff options
Diffstat (limited to 'extra/mariabackup')
| -rw-r--r-- | extra/mariabackup/backup_copy.cc | 32 | ||||
| -rw-r--r-- | extra/mariabackup/backup_copy.h | 3 | ||||
| -rw-r--r-- | extra/mariabackup/backup_debug.h | 32 | ||||
| -rw-r--r-- | extra/mariabackup/encryption_plugin.cc | 1 | ||||
| -rw-r--r-- | extra/mariabackup/fil_cur.cc | 41 | ||||
| -rw-r--r-- | extra/mariabackup/fil_cur.h | 4 | ||||
| -rw-r--r-- | extra/mariabackup/write_filt.cc | 26 | ||||
| -rw-r--r-- | extra/mariabackup/write_filt.h | 8 | ||||
| -rw-r--r-- | extra/mariabackup/xtrabackup.cc | 422 | ||||
| -rw-r--r-- | extra/mariabackup/xtrabackup.h | 27 |
10 files changed, 481 insertions, 115 deletions
diff --git a/extra/mariabackup/backup_copy.cc b/extra/mariabackup/backup_copy.cc index 0ba220364e2..d3fa3605c21 100644 --- a/extra/mariabackup/backup_copy.cc +++ b/extra/mariabackup/backup_copy.cc @@ -867,21 +867,14 @@ datafile_rsync_backup(const char *filepath, bool save_to_list, FILE *f) return(true); } - -static -bool -backup_file_vprintf(const char *filename, const char *fmt, va_list ap) +bool backup_file_print_buf(const char *filename, const char *buf, int buf_len) { ds_file_t *dstfile = NULL; MY_STAT stat; /* unused for now */ - char *buf = 0; - int buf_len; const char *action; memset(&stat, 0, sizeof(stat)); - buf_len = vasprintf(&buf, fmt, ap); - stat.st_size = buf_len; stat.st_mtime = my_time(0); @@ -905,7 +898,6 @@ backup_file_vprintf(const char *filename, const char *fmt, va_list ap) /* close */ msg(" ...done"); - free(buf); if (ds_close(dstfile)) { goto error_close; @@ -914,7 +906,6 @@ backup_file_vprintf(const char *filename, const char *fmt, va_list ap) return(true); error: - free(buf); if (dstfile != NULL) { ds_close(dstfile); } @@ -922,8 +913,21 @@ error: error_close: msg("Error: backup file failed."); return(false); /*ERROR*/ -} + return true; +}; + +static +bool +backup_file_vprintf(const char *filename, const char *fmt, va_list ap) +{ + char *buf = 0; + int buf_len; + buf_len = vasprintf(&buf, fmt, ap); + bool result = backup_file_print_buf(filename, buf, buf_len); + free(buf); + return result; +} bool backup_file_printf(const char *filename, const char *fmt, ...) @@ -1446,7 +1450,7 @@ out: return(ret); } -void backup_fix_ddl(void); +void backup_fix_ddl(CorruptedPages &); lsn_t get_current_lsn(MYSQL *connection) { @@ -1471,7 +1475,7 @@ lsn_t get_current_lsn(MYSQL *connection) lsn_t server_lsn_after_lock; extern void backup_wait_for_lsn(lsn_t lsn); /** Start --backup */ -bool backup_start() +bool backup_start(CorruptedPages &corrupted_pages) { if (!opt_no_lock) { if (opt_safe_slave_backup) { @@ -1506,7 +1510,7 @@ bool backup_start() msg("Waiting for log copy thread to read lsn %llu", (ulonglong)server_lsn_after_lock); backup_wait_for_lsn(server_lsn_after_lock); - backup_fix_ddl(); + backup_fix_ddl(corrupted_pages); // There is no need to stop slave thread before coping non-Innodb data when // --no-lock option is used because --no-lock option requires that no DDL or diff --git a/extra/mariabackup/backup_copy.h b/extra/mariabackup/backup_copy.h index 7c886719f37..62b2b1bc232 100644 --- a/extra/mariabackup/backup_copy.h +++ b/extra/mariabackup/backup_copy.h @@ -33,7 +33,7 @@ copy_file(ds_ctxt_t *datasink, uint thread_n); /** Start --backup */ -bool backup_start(); +bool backup_start(CorruptedPages &corrupted_pages); /** Release resources after backup_start() */ void backup_release(); /** Finish after backup_start() and backup_release() */ @@ -51,5 +51,6 @@ directory_exists(const char *dir, bool create); lsn_t get_current_lsn(MYSQL *connection); +bool backup_file_print_buf(const char *filename, const char *buf, int buf_len); #endif diff --git a/extra/mariabackup/backup_debug.h b/extra/mariabackup/backup_debug.h new file mode 100644 index 00000000000..cefbc287361 --- /dev/null +++ b/extra/mariabackup/backup_debug.h @@ -0,0 +1,32 @@ +#pragma once +#include "my_dbug.h" +#ifndef DBUG_OFF +extern char *dbug_mariabackup_get_val(const char *event, const char *key); +/* +In debug mode, execute SQL statement that was passed via environment. +To use this facility, you need to + +1. Add code DBUG_EXECUTE_MARIABACKUP_EVENT("my_event_name", key);); + to the code. key is usually a table name +2. Set environment variable my_event_name_$key SQL statement you want to execute + when event occurs, in DBUG_EXECUTE_IF from above. + In mtr , you can set environment via 'let' statement (do not use $ as the first char + for the variable) +3. start mariabackup with --dbug=+d,debug_mariabackup_events +*/ +extern void dbug_mariabackup_event( + const char *event,const char *key); +#define DBUG_MARIABACKUP_EVENT(A, B) \ + DBUG_EXECUTE_IF("mariabackup_events", \ + dbug_mariabackup_event(A,B);); +#define DBUG_EXECUTE_FOR_KEY(EVENT, KEY, CODE) \ + DBUG_EXECUTE_IF("mariabackup_inject_code", {\ + char *dbug_val = dbug_mariabackup_get_val(EVENT, KEY); \ + if (dbug_val && *dbug_val) CODE \ + }) +#else +#define DBUG_MARIABACKUP_EVENT(A,B) +#define DBUG_MARIABACKUP_EVENT_LOCK(A,B) +#define DBUG_EXECUTE_FOR_KEY(EVENT, KEY, CODE) +#endif + diff --git a/extra/mariabackup/encryption_plugin.cc b/extra/mariabackup/encryption_plugin.cc index 8f1978e967a..d92e1b2d1cc 100644 --- a/extra/mariabackup/encryption_plugin.cc +++ b/extra/mariabackup/encryption_plugin.cc @@ -2,7 +2,6 @@ #include <mysql.h> #include <xtrabackup.h> #include <encryption_plugin.h> -#include <backup_copy.h> #include <sql_plugin.h> #include <sstream> #include <vector> diff --git a/extra/mariabackup/fil_cur.cc b/extra/mariabackup/fil_cur.cc index b229a37d934..843bceae3c6 100644 --- a/extra/mariabackup/fil_cur.cc +++ b/extra/mariabackup/fil_cur.cc @@ -36,6 +36,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA #include "read_filt.h" #include "xtrabackup.h" #include "xb0xb.h" +#include "backup_debug.h" /* Size of read buffer in pages (640 pages = 10M for 16K sized pages) */ #define XB_FIL_CUR_PAGES 640 @@ -381,8 +382,8 @@ if there are no more pages to read and XB_FIL_CUR_ERROR on error. */ xb_fil_cur_result_t xb_fil_cur_read( /*============*/ - xb_fil_cur_t* cursor) /*!< in/out: source file cursor */ -{ + xb_fil_cur_t* cursor, /*!< in/out: source file cursor */ + CorruptedPages &corrupted_pages){ byte* page; ulint i; ulint npages; @@ -455,20 +456,40 @@ read_retry: retry_count--; if (retry_count == 0) { + const char *ignore_corruption_warn = opt_log_innodb_page_corruption ? + " WARNING!!! The corruption is ignored due to" + " log-innodb-page-corruption option, the backup can contain" + " corrupted data." : ""; msg(cursor->thread_n, "Error: failed to read page after " "10 retries. File %s seems to be " - "corrupted.", cursor->abs_path); - ret = XB_FIL_CUR_ERROR; + "corrupted.%s", cursor->abs_path, ignore_corruption_warn); buf_page_print(page, cursor->page_size); - break; + if (opt_log_innodb_page_corruption) { + corrupted_pages.add_page(cursor->node->name, cursor->node->space->id, + page_no); + retry_count = 1; + } + else { + ret = XB_FIL_CUR_ERROR; + break; + } + } + else { + msg(cursor->thread_n, "Database page corruption detected at page " + ULINTPF ", retrying...", + page_no); + os_thread_sleep(100000); + goto read_retry; } - msg(cursor->thread_n, "Database page corruption detected at page " - ULINTPF ", retrying...", - page_no); - os_thread_sleep(100000); - goto read_retry; } + DBUG_EXECUTE_FOR_KEY("add_corrupted_page_for", cursor->node->space->name, + { + ulint corrupted_page_no = strtoul(dbug_val, NULL, 10); + if (page_no == corrupted_page_no) + corrupted_pages.add_page(cursor->node->name, cursor->node->space->id, + corrupted_page_no); + }); cursor->buf_read += page_size; cursor->buf_npages++; } diff --git a/extra/mariabackup/fil_cur.h b/extra/mariabackup/fil_cur.h index d4a7c0d5b39..be7d0e170d2 100644 --- a/extra/mariabackup/fil_cur.h +++ b/extra/mariabackup/fil_cur.h @@ -28,6 +28,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA #include <my_dir.h> #include "read_filt.h" #include "srv0start.h" +#include "xtrabackup.h" struct xb_fil_cur_t { pfs_os_file_t file; /*!< source file handle */ @@ -98,7 +99,8 @@ if there are no more pages to read and XB_FIL_CUR_ERROR on error. */ xb_fil_cur_result_t xb_fil_cur_read( /*============*/ - xb_fil_cur_t* cursor); /*!< in/out: source file cursor */ + xb_fil_cur_t* cursor, + CorruptedPages &corrupted_pages); /*!< in/out: source file cursor */ /************************************************************************ Close the source file cursor opened with xb_fil_cur_open() and its diff --git a/extra/mariabackup/write_filt.cc b/extra/mariabackup/write_filt.cc index d72c11978a9..ae4c2251b00 100644 --- a/extra/mariabackup/write_filt.cc +++ b/extra/mariabackup/write_filt.cc @@ -26,13 +26,12 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA #include "common.h" #include "write_filt.h" #include "fil_cur.h" -#include "xtrabackup.h" #include <os0proc.h> /************************************************************************ Write-through page write filter. */ static my_bool wf_wt_init(xb_write_filt_ctxt_t *ctxt, char *dst_name, - xb_fil_cur_t *cursor); + xb_fil_cur_t *cursor, CorruptedPages *corrupted_pages); static my_bool wf_wt_process(xb_write_filt_ctxt_t *ctxt, ds_file_t *dstfile); xb_write_filt_t wf_write_through = { @@ -45,7 +44,7 @@ xb_write_filt_t wf_write_through = { /************************************************************************ Incremental page write filter. */ static my_bool wf_incremental_init(xb_write_filt_ctxt_t *ctxt, char *dst_name, - xb_fil_cur_t *cursor); + xb_fil_cur_t *cursor, CorruptedPages *corrupted_pages); static my_bool wf_incremental_process(xb_write_filt_ctxt_t *ctxt, ds_file_t *dstfile); static my_bool wf_incremental_finalize(xb_write_filt_ctxt_t *ctxt, @@ -65,11 +64,11 @@ Initialize incremental page write filter. @return TRUE on success, FALSE on error. */ static my_bool wf_incremental_init(xb_write_filt_ctxt_t *ctxt, char *dst_name, - xb_fil_cur_t *cursor) + xb_fil_cur_t *cursor, CorruptedPages *corrupted_pages) { char meta_name[FN_REFLEN]; xb_wf_incremental_ctxt_t *cp = - &(ctxt->u.wf_incremental_ctxt); + &(ctxt->wf_incremental_ctxt); ctxt->cursor = cursor; @@ -100,7 +99,9 @@ wf_incremental_init(xb_write_filt_ctxt_t *ctxt, char *dst_name, strcat(dst_name, ".delta"); mach_write_to_4(cp->delta_buf, 0x78747261UL); /*"xtra"*/ + cp->npages = 1; + cp->corrupted_pages = corrupted_pages; return(TRUE); } @@ -117,15 +118,16 @@ wf_incremental_process(xb_write_filt_ctxt_t *ctxt, ds_file_t *dstfile) byte *page; const ulint page_size = cursor->page_size.physical(); - xb_wf_incremental_ctxt_t *cp = &(ctxt->u.wf_incremental_ctxt); + xb_wf_incremental_ctxt_t *cp = &(ctxt->wf_incremental_ctxt); for (i = 0, page = cursor->buf; i < cursor->buf_npages; i++, page += page_size) { - if (incremental_lsn >= mach_read_from_8(page + FIL_PAGE_LSN)) { - + if ((!cp->corrupted_pages || + !cp->corrupted_pages->contains(cursor->node->space->id, + cursor->buf_page_no + i)) && + incremental_lsn >= mach_read_from_8(page + FIL_PAGE_LSN)) continue; - } /* updated page */ if (cp->npages == page_size / 4) { @@ -163,7 +165,7 @@ wf_incremental_finalize(xb_write_filt_ctxt_t *ctxt, ds_file_t *dstfile) xb_fil_cur_t *cursor = ctxt->cursor; const ulint page_size = cursor->page_size.physical(); - xb_wf_incremental_ctxt_t *cp = &(ctxt->u.wf_incremental_ctxt); + xb_wf_incremental_ctxt_t *cp = &(ctxt->wf_incremental_ctxt); if (cp->npages != page_size / 4) { mach_write_to_4(cp->delta_buf + cp->npages * 4, 0xFFFFFFFFUL); @@ -185,7 +187,7 @@ Free the incremental page write filter's buffer. */ static void wf_incremental_deinit(xb_write_filt_ctxt_t *ctxt) { - xb_wf_incremental_ctxt_t *cp = &(ctxt->u.wf_incremental_ctxt); + xb_wf_incremental_ctxt_t *cp = &(ctxt->wf_incremental_ctxt); os_mem_free_large(cp->delta_buf, cp->delta_buf_size); } @@ -195,7 +197,7 @@ Initialize the write-through page write filter. @return TRUE on success, FALSE on error. */ static my_bool wf_wt_init(xb_write_filt_ctxt_t *ctxt, char *dst_name __attribute__((unused)), - xb_fil_cur_t *cursor) + xb_fil_cur_t *cursor, CorruptedPages *) { ctxt->cursor = cursor; diff --git a/extra/mariabackup/write_filt.h b/extra/mariabackup/write_filt.h index febf25f2a8a..6c3ef24291f 100644 --- a/extra/mariabackup/write_filt.h +++ b/extra/mariabackup/write_filt.h @@ -27,26 +27,26 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA #include "fil_cur.h" #include "datasink.h" +#include "xtrabackup.h" /* Incremental page filter context */ typedef struct { ulint delta_buf_size; byte *delta_buf; ulint npages; + CorruptedPages *corrupted_pages; } xb_wf_incremental_ctxt_t; /* Page filter context used as an opaque structure by callers */ typedef struct { xb_fil_cur_t *cursor; - union { - xb_wf_incremental_ctxt_t wf_incremental_ctxt; - } u; + xb_wf_incremental_ctxt_t wf_incremental_ctxt; } xb_write_filt_ctxt_t; typedef struct { my_bool (*init)(xb_write_filt_ctxt_t *ctxt, char *dst_name, - xb_fil_cur_t *cursor); + xb_fil_cur_t *cursor, CorruptedPages *corrupted_pages); my_bool (*process)(xb_write_filt_ctxt_t *ctxt, ds_file_t *dstfile); my_bool (*finalize)(xb_write_filt_ctxt_t *, ds_file_t *dstfile); void (*deinit)(xb_write_filt_ctxt_t *); diff --git a/extra/mariabackup/xtrabackup.cc b/extra/mariabackup/xtrabackup.cc index 364d1242b29..20a8a562fa5 100644 --- a/extra/mariabackup/xtrabackup.cc +++ b/extra/mariabackup/xtrabackup.cc @@ -76,6 +76,7 @@ Street, Fifth Floor, Boston, MA 02110-1335 USA #include <list> #include <sstream> #include <set> +#include <fstream> #include <mysql.h> #define G_PTR uchar* @@ -104,6 +105,9 @@ Street, Fifth Floor, Boston, MA 02110-1335 USA #include <crc_glue.h> #include <log.h> #include <derror.h> +#include "backup_debug.h" + +#define MB_CORRUPTED_PAGES_FILE "innodb_corrupted_pages" int sys_var_init(); @@ -304,6 +308,7 @@ my_bool opt_noversioncheck = FALSE; my_bool opt_no_backup_locks = FALSE; my_bool opt_decompress = FALSE; my_bool opt_remove_original; +my_bool opt_log_innodb_page_corruption; my_bool opt_lock_ddl_per_table = FALSE; static my_bool opt_check_privileges; @@ -363,6 +368,207 @@ struct ddl_tracker_t { static ddl_tracker_t ddl_tracker; +// Convert non-null terminated filename to space name +std::string filename_to_spacename(const byte *filename, size_t len); + +CorruptedPages::CorruptedPages() { ut_a(!pthread_mutex_init(&m_mutex, NULL)); } + +CorruptedPages::~CorruptedPages() { ut_a(!pthread_mutex_destroy(&m_mutex)); } + +void CorruptedPages::add_page_no_lock(const char *space_name, ulint space_id, + ulint page_no, bool convert_space_name) +{ + space_info_t &space_info = m_spaces[space_id]; + if (space_info.space_name.empty()) + space_info.space_name= + convert_space_name + ? filename_to_spacename(reinterpret_cast<const byte *>(space_name), + strlen(space_name)) + : space_name; + (void)space_info.pages.insert(page_no); +} + +void CorruptedPages::add_page(const char *file_name, ulint space_id, + ulint page_no) +{ + ut_a(!pthread_mutex_lock(&m_mutex)); + add_page_no_lock(file_name, space_id, page_no, true); + ut_a(!pthread_mutex_unlock(&m_mutex)); +} + +bool CorruptedPages::contains(ulint space_id, ulint page_no) const +{ + bool result = false; + ut_a(!pthread_mutex_lock(&m_mutex)); + container_t::const_iterator space_it= m_spaces.find(space_id); + if (space_it != m_spaces.end()) + result = space_it->second.pages.count(page_no); + ut_a(!pthread_mutex_unlock(&m_mutex)); + return result; +} + +void CorruptedPages::drop_space(ulint space_id) +{ + ut_a(!pthread_mutex_lock(&m_mutex)); + m_spaces.erase(space_id); + ut_a(!pthread_mutex_unlock(&m_mutex)); +} + +void CorruptedPages::rename_space(ulint space_id, const std::string &new_name) +{ + ut_a(!pthread_mutex_lock(&m_mutex)); + container_t::iterator space_it = m_spaces.find(space_id); + if (space_it != m_spaces.end()) + space_it->second.space_name = new_name; + ut_a(!pthread_mutex_unlock(&m_mutex)); +} + +bool CorruptedPages::print_to_file(const char *filename) const +{ + std::ostringstream out; + ut_a(!pthread_mutex_lock(&m_mutex)); + if (!m_spaces.size()) + { + ut_a(!pthread_mutex_unlock(&m_mutex)); + return true; + } + for (container_t::const_iterator space_it= + m_spaces.begin(); + space_it != m_spaces.end(); ++space_it) + { + out << space_it->second.space_name << " " << space_it->first << "\n"; + bool first_page_no= true; + for (std::set<ulint>::const_iterator page_it= + space_it->second.pages.begin(); + page_it != space_it->second.pages.end(); ++page_it) + if (first_page_no) + { + out << *page_it; + first_page_no= false; + } + else + out << " " << *page_it; + out << "\n"; + } + ut_a(!pthread_mutex_unlock(&m_mutex)); + if (xtrabackup_backup) + return backup_file_print_buf(filename, out.str().c_str(), + out.str().size()); + std::ofstream outfile; + outfile.open(filename); + if (!outfile.is_open()) + die("Can't open %s, error number: %d, error message: %s", filename, errno, + strerror(errno)); + outfile << out.str(); + return true; +} + +void CorruptedPages::read_from_file(const char *file_name) +{ + MY_STAT mystat; + if (!my_stat(file_name, &mystat, MYF(0))) + return; + std::ifstream infile; + infile.open(file_name); + if (!infile.is_open()) + die("Can't open %s, error number: %d, error message: %s", file_name, errno, + strerror(errno)); + std::string line; + std::string space_name; + ulint space_id; + ulint line_number= 0; + while (std::getline(infile, line)) + { + ++line_number; + std::istringstream iss(line); + if (line_number & 1) { + if (!(iss >> space_name)) + die("Can't parse space name from corrupted pages file at " + "line " ULINTPF, + line_number); + if (!(iss >> space_id)) + die("Can't parse space id from corrupted pages file at line " ULINTPF, + line_number); + } + else + { + ulint page_no; + while ((iss >> page_no)) + add_page_no_lock(space_name.c_str(), space_id, page_no, false); + if (!iss.eof()) + die("Corrupted pages file parse error on line number " ULINTPF, + line_number); + } + } +} + +bool CorruptedPages::empty() const +{ + ut_a(!pthread_mutex_lock(&m_mutex)); + bool result= !m_spaces.size(); + ut_a(!pthread_mutex_unlock(&m_mutex)); + return result; +} + +static void xb_load_single_table_tablespace(const std::string &space_name, + bool set_size); +static void xb_data_files_close(); + +void CorruptedPages::zero_out_free_pages() +{ + container_t non_free_pages; + byte* buf= static_cast<byte*>(ut_malloc_nokey(2 * UNIV_PAGE_SIZE)); + byte* zero_page = static_cast<byte*>(ut_align(buf, UNIV_PAGE_SIZE)); + memset(zero_page, 0, UNIV_PAGE_SIZE); + + ut_a(!pthread_mutex_lock(&m_mutex)); + for (container_t::const_iterator space_it= m_spaces.begin(); + space_it != m_spaces.end(); ++space_it) + { + ulint space_id = space_it->first; + const std::string &space_name = space_it->second.space_name; + // There is no need to close tablespaces explixitly as they will be closed + // in innodb_shutdown(). + xb_load_single_table_tablespace(space_name, false); + mutex_enter(&fil_system->mutex); + fil_space_t *space = fil_space_get_by_name(space_name.c_str()); + mutex_exit(&fil_system->mutex); + if (!space) + die("Can't find space object for space name %s to check corrupted page", + space_name.c_str()); + for (std::set<ulint>::const_iterator page_it= + space_it->second.pages.begin(); + page_it != space_it->second.pages.end(); ++page_it) + { + bool is_free= fseg_page_is_free(space, *page_it); + if (!is_free) { + space_info_t &space_info = non_free_pages[space_id]; + space_info.pages.insert(*page_it); + if (space_info.space_name.empty()) + space_info.space_name = space_name; + msg("Error: corrupted page " ULINTPF + " of tablespace %s can not be fixed", + *page_it, space_name.c_str()); + } + else + { + const page_id_t page_id(space->id, *page_it); + dberr_t err= fil_io(IORequestWrite, true, page_id, univ_page_size, 0, + univ_page_size.physical(), zero_page, NULL); + if (err != DB_SUCCESS) + die("Can't zero out corrupted page " ULINTPF " of tablespace %s", + *page_it, space_name.c_str()); + msg("Corrupted page " ULINTPF + " of tablespace %s was successfuly fixed.", + *page_it, space_name.c_str()); + } + } + } + m_spaces.swap(non_free_pages); + ut_a(!pthread_mutex_unlock(&m_mutex)); + ut_free(buf); +} + /* Simple datasink creation tracking...add datasinks in the reverse order you want them destroyed. */ #define XTRABACKUP_MAX_DATASINKS 10 @@ -376,11 +582,12 @@ xtrabackup_add_datasink(ds_ctxt_t *ds) datasinks[actual_datasinks] = ds; actual_datasinks++; } - -typedef void (*process_single_tablespace_func_t)(const char *dirname, const char *filname, bool is_remote); +typedef void (*process_single_tablespace_func_t)(const char *dirname, + const char *filname, + bool is_remote, + bool set_size); static dberr_t enumerate_ibd_files(process_single_tablespace_func_t callback); - /* ======== Datafiles iterator ======== */ struct datafiles_iter_t { fil_system_t *system; @@ -732,6 +939,7 @@ typedef struct { uint *count; pthread_mutex_t* count_mutex; os_thread_id_t id; + CorruptedPages *corrupted_pages; } data_thread_ctxt_t; /* ======== for option and variables ======== */ @@ -837,7 +1045,8 @@ enum options_xtrabackup OPT_LOCK_DDL_PER_TABLE, OPT_ROCKSDB_DATADIR, OPT_BACKUP_ROCKSDB, - OPT_XTRA_CHECK_PRIVILEGES + OPT_XTRA_CHECK_PRIVILEGES, + OPT_XB_IGNORE_INNODB_PAGE_CORRUPTION }; struct my_option xb_client_options[]= { @@ -1234,6 +1443,17 @@ struct my_option xb_client_options[]= { " uses old (pre-4.1.1) protocol.", &opt_secure_auth, &opt_secure_auth, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0}, + + {"log-innodb-page-corruption", OPT_XB_IGNORE_INNODB_PAGE_CORRUPTION, + "Continue backup if innodb corrupted pages are found. The pages are " + "logged in " MB_CORRUPTED_PAGES_FILE + " and backup is finished with error. " + "--prepare will try to fix corrupted pages. If " MB_CORRUPTED_PAGES_FILE + " exists after --prepare in base backup directory, backup still contains " + "corrupted pages and can not be considered as consistent.", + &opt_log_innodb_page_corruption, &opt_log_innodb_page_corruption, 0, + GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0}, + #define MYSQL_CLIENT #include "sslopt-longopts.h" #undef MYSQL_CLIENT @@ -1519,7 +1739,8 @@ debug_sync_point(const char *name) static std::set<std::string> tables_for_export; -static void append_export_table(const char *dbname, const char *tablename, bool is_remote) +static void append_export_table(const char *dbname, const char *tablename, + bool is_remote, bool set_size) { if(dbname && tablename && !is_remote) { @@ -2549,7 +2770,8 @@ for full backup, pages filter for incremental backup, etc. @return FALSE on success and TRUE on error */ static my_bool xtrabackup_copy_datafile(fil_node_t *node, uint thread_n, const char *dest_name, - const xb_write_filt_t &write_filter) + const xb_write_filt_t &write_filter, + CorruptedPages &corrupted_pages) { char dst_name[FN_REFLEN]; ds_file_t *dstfile = NULL; @@ -2610,7 +2832,8 @@ static my_bool xtrabackup_copy_datafile(fil_node_t *node, uint thread_n, ut_a(write_filter.process != NULL); if (write_filter.init != NULL && - !write_filter.init(&write_filt_ctxt, dst_name, &cursor)) { + !write_filter.init(&write_filt_ctxt, dst_name, &cursor, + opt_log_innodb_page_corruption ? &corrupted_pages : NULL)) { msg (thread_n, "mariabackup: error: failed to initialize page write filter."); goto error; } @@ -2630,7 +2853,8 @@ static my_bool xtrabackup_copy_datafile(fil_node_t *node, uint thread_n, } /* The main copy loop */ - while ((res = xb_fil_cur_read(&cursor)) == XB_FIL_CUR_SUCCESS) { + while ((res = xb_fil_cur_read(&cursor, corrupted_pages)) == + XB_FIL_CUR_SUCCESS) { if (!write_filter.process(&write_filt_ctxt, dstfile)) { goto error; } @@ -2916,6 +3140,21 @@ static os_thread_ret_t io_watching_thread(void*) } #ifndef DBUG_OFF +char *dbug_mariabackup_get_val(const char *event, const char *key) +{ + char envvar[FN_REFLEN]; + if (key) { + snprintf(envvar, sizeof(envvar), "%s_%s", event, key); + char *slash = strchr(envvar, '/'); + if (slash) + *slash = '_'; + } else { + strncpy(envvar, event, sizeof envvar - 1); + envvar[sizeof envvar - 1] = '\0'; + } + return getenv(envvar); +} + /* In debug mode, execute SQL statement that was passed via environment. To use this facility, you need to @@ -2928,35 +3167,15 @@ To use this facility, you need to for the variable) 3. start mariabackup with --dbug=+d,debug_mariabackup_events */ -static void dbug_mariabackup_event(const char *event,const char *key) +void dbug_mariabackup_event(const char *event,const char *key) { - char envvar[FN_REFLEN]; - if (key) { - snprintf(envvar, sizeof(envvar), "%s_%s", event, key); - char *slash = strchr(envvar, '/'); - if (slash) - *slash = '_'; - } else { - strncpy(envvar, event, sizeof envvar - 1); - envvar[sizeof envvar - 1] = '\0'; - } - char *sql = getenv(envvar); - if (sql) { + char *sql = dbug_mariabackup_get_val(event, key); + if (sql && *sql) { msg("dbug_mariabackup_event : executing '%s'", sql); xb_mysql_query(mysql_connection, sql, false, true); } - } -#define DBUG_MARIABACKUP_EVENT(A, B) DBUG_EXECUTE_IF("mariabackup_events", dbug_mariabackup_event(A,B);); -#define DBUG_MB_INJECT_CODE(EVENT, KEY, CODE) \ - DBUG_EXECUTE_IF("mariabackup_inject_code", {\ - char *env = getenv(EVENT); \ - if (env && !strcmp(env, KEY)) { CODE } \ - }) -#else -#define DBUG_MARIABACKUP_EVENT(A,B) -#define DBUG_MB_INJECT_CODE(EVENT, KEY, CODE) -#endif +#endif // DBUG_OFF /************************************************************************** Datafiles copying thread.*/ @@ -2969,6 +3188,7 @@ data_copy_thread_func( data_thread_ctxt_t *ctxt = (data_thread_ctxt_t *) arg; uint num = ctxt->num; fil_node_t* node; + ut_ad(ctxt->corrupted_pages); /* Initialize mysys thread-specific memory so we can @@ -2980,11 +3200,12 @@ data_copy_thread_func( while ((node = datafiles_iter_next(ctxt->it)) != NULL) { DBUG_MARIABACKUP_EVENT("before_copy", node->space->name); - DBUG_MB_INJECT_CODE("wait_innodb_redo_before_copy", node->space->name, + DBUG_EXECUTE_FOR_KEY("wait_innodb_redo_before_copy", node->space->name, backup_wait_for_lsn(get_current_lsn(mysql_connection));); /* copy the datafile */ if (xtrabackup_copy_datafile(node, num, NULL, - xtrabackup_incremental ? wf_incremental : wf_write_through)) + xtrabackup_incremental ? wf_incremental : wf_write_through, + *ctxt->corrupted_pages)) die("failed to copy datafile."); DBUG_MARIABACKUP_EVENT("after_copy", node->space->name); @@ -3120,15 +3341,22 @@ xb_new_datafile(const char *name, bool is_remote) } -static -void -xb_load_single_table_tablespace( - const char *dirname, - const char *filname, - bool is_remote) +/** Load tablespace. + +@param[in] dirname directory name of the tablespace to open +@param[in] filname file name of the tablespece to open +@param[in] is_remote true if tablespace file is .isl +@param[in] set_size true if we need to set tablespace size in pages explixitly. +If this parameter is set, the size and free pages limit will not be read +from page 0. +*/ +static void xb_load_single_table_tablespace(const char *dirname, + const char *filname, + bool is_remote, bool set_size) { ut_ad(srv_operation == SRV_OPERATION_BACKUP - || srv_operation == SRV_OPERATION_RESTORE_DELTA); + || srv_operation == SRV_OPERATION_RESTORE_DELTA + || srv_operation == SRV_OPERATION_RESTORE); /* Ignore .isl files on XtraBackup recovery. All tablespaces must be local. */ if (is_remote && srv_operation == SRV_OPERATION_RESTORE_DELTA) { @@ -3176,13 +3404,12 @@ xb_load_single_table_tablespace( bool is_empty_file = file->exists() && file->is_empty_file(); if (err == DB_SUCCESS && file->space_id() != SRV_TMP_SPACE_ID) { - os_offset_t node_size = os_file_get_size(file->handle()); - os_offset_t n_pages; - - ut_a(node_size != (os_offset_t) -1); - - n_pages = node_size / page_size_t(file->flags()).physical(); - + os_offset_t n_pages = 0; + if (set_size) { + os_offset_t node_size = os_file_get_size(file->handle()); + ut_a(node_size != (os_offset_t) -1); + n_pages = node_size / page_size_t(file->flags()).physical(); + } space = fil_space_create( name, file->space_id(), file->flags(), FIL_TYPE_TABLESPACE, NULL/* TODO: crypt_data */); @@ -3210,6 +3437,27 @@ xb_load_single_table_tablespace( ut_free(name); } +static void xb_load_single_table_tablespace(const std::string &space_name, + bool set_size) +{ + std::string name(space_name); + bool is_remote= access((name + ".ibd").c_str(), R_OK) != 0; + const char *extension= is_remote ? ".isl" : ".ibd"; + name.append(extension); + char buf[FN_REFLEN]; + strncpy(buf, name.c_str(), sizeof buf - 1); + buf[sizeof buf - 1]= '\0'; + const char *dbname= buf; + char *p= strchr(buf, '/'); + if (p == 0) + die("Unexpected tablespace %s filename %s", space_name.c_str(), + name.c_str()); + ut_a(p); + *p= 0; + const char *tablename= p + 1; + xb_load_single_table_tablespace(dbname, tablename, is_remote, set_size); +} + /** Scan the database directories under the MySQL datadir, looking for .ibd files and determining the space id in each of them. @return DB_SUCCESS or error number */ @@ -3251,7 +3499,7 @@ static dberr_t enumerate_ibd_files(process_single_tablespace_func_t callback) bool is_ibd = !is_isl && ends_with(dbinfo.name,".ibd"); if (is_isl || is_ibd) { - (*callback)(NULL, dbinfo.name, is_isl); + (*callback)(NULL, dbinfo.name, is_isl, false); } } @@ -3308,7 +3556,7 @@ static dberr_t enumerate_ibd_files(process_single_tablespace_func_t callback) if (strlen(fileinfo.name) > 4) { bool is_isl= false; if (ends_with(fileinfo.name, ".ibd") || ((is_isl = ends_with(fileinfo.name, ".isl")))) - (*callback)(dbinfo.name, fileinfo.name, is_isl); + (*callback)(dbinfo.name, fileinfo.name, is_isl, false); } } @@ -4080,6 +4328,7 @@ static bool xtrabackup_backup_func() uint i; uint count; pthread_mutex_t count_mutex; + CorruptedPages corrupted_pages; data_thread_ctxt_t *data_threads; pthread_mutex_init(&backup_mutex, NULL); pthread_cond_init(&scanned_lsn_cond, NULL); @@ -4401,6 +4650,7 @@ fail_before_log_copying_thread_start: data_threads[i].num = i+1; data_threads[i].count = &count; data_threads[i].count_mutex = &count_mutex; + data_threads[i].corrupted_pages = &corrupted_pages; os_thread_create(data_copy_thread_func, data_threads + i, &data_threads[i].id); } @@ -4421,7 +4671,7 @@ fail_before_log_copying_thread_start: datafiles_iter_free(it); } - bool ok = backup_start(); + bool ok = backup_start(corrupted_pages); if (ok) { ok = xtrabackup_backup_low(); @@ -4438,6 +4688,9 @@ fail_before_log_copying_thread_start: } } + if (opt_log_innodb_page_corruption) + ok = corrupted_pages.print_to_file(MB_CORRUPTED_PAGES_FILE); + if (!ok) { goto fail; } @@ -4465,7 +4718,13 @@ fail_before_log_copying_thread_start: log_file_op = NULL; pthread_mutex_destroy(&backup_mutex); pthread_cond_destroy(&scanned_lsn_cond); - return(true); + if (opt_log_innodb_page_corruption && !corrupted_pages.empty()) { + msg("Error: corrupted innodb pages are found and logged to " + MB_CORRUPTED_PAGES_FILE " file"); + return false; + } + else + return(true); } @@ -4487,7 +4746,7 @@ FTWRL. This ensures consistent backup in presence of DDL. It is the responsibility of the prepare phase to deal with .new, .ren, and .del files. */ -void backup_fix_ddl(void) +void backup_fix_ddl(CorruptedPages &corrupted_pages) { std::set<std::string> new_tables; std::set<std::string> dropped_tables; @@ -4510,6 +4769,7 @@ void backup_fix_ddl(void) if (ddl_tracker.drops.find(id) != ddl_tracker.drops.end()) { dropped_tables.insert(name); + corrupted_pages.drop_space(id); continue; } @@ -4530,15 +4790,21 @@ void backup_fix_ddl(void) /* table was renamed, but we need a full copy of it because of optimized DDL. We emulate a drop/create.*/ dropped_tables.insert(name); + if (opt_log_innodb_page_corruption) + corrupted_pages.drop_space(id); new_tables.insert(new_name); } else { /* Renamed, and no optimized DDL*/ renamed_tables[name] = new_name; + if (opt_log_innodb_page_corruption) + corrupted_pages.rename_space(id, new_name); } } else if (has_optimized_ddl) { /* Table was recreated, or optimized DDL ran. In both cases we need a full copy in the backup.*/ new_tables.insert(name); + if (opt_log_innodb_page_corruption) + corrupted_pages.drop_space(id); } } @@ -4558,6 +4824,8 @@ void backup_fix_ddl(void) if (ddl_tracker.drops.find(id) == ddl_tracker.drops.end()) { dropped_tables.erase(name); new_tables.insert(name); + if (opt_log_innodb_page_corruption) + corrupted_pages.drop_space(id); } } @@ -4600,23 +4868,7 @@ void backup_fix_ddl(void) const char *space_name = iter->c_str(); if (check_if_skip_table(space_name)) continue; - std::string name(*iter); - bool is_remote = access((name + ".ibd").c_str(), R_OK) != 0; - const char *extension = is_remote ? ".isl" : ".ibd"; - name.append(extension); - char buf[FN_REFLEN]; - strncpy(buf, name.c_str(), sizeof buf - 1); - buf[sizeof buf - 1] = '\0'; - const char *dbname = buf; - char *p = strchr(buf, '/'); - if (p == 0) { - msg("Unexpected tablespace %s filename %s", space_name, name.c_str()); - ut_a(0); - } - ut_a(p); - *p = 0; - const char *tablename = p + 1; - xb_load_single_table_tablespace(dbname, tablename, is_remote); + xb_load_single_table_tablespace(*iter, false); } it = datafiles_iter_new(fil_system); @@ -4629,7 +4881,8 @@ void backup_fix_ddl(void) continue; std::string dest_name(node->space->name); dest_name.append(".new"); - xtrabackup_copy_datafile(node, 0, dest_name.c_str(), wf_write_through); + xtrabackup_copy_datafile(node, 0, dest_name.c_str(), wf_write_through, + corrupted_pages); } datafiles_iter_free(it); @@ -5538,6 +5791,7 @@ static ibool prepare_handle_del_files(const char *datadir, const char *db, const @return whether the operation succeeded */ static bool xtrabackup_prepare_func(char** argv) { + CorruptedPages corrupted_pages; char metadata_path[FN_REFLEN]; /* cd to target-dir */ @@ -5711,6 +5965,30 @@ static bool xtrabackup_prepare_func(char** argv) goto error_cleanup; } + corrupted_pages.read_from_file(MB_CORRUPTED_PAGES_FILE); + if (xtrabackup_incremental) + { + char inc_filename[FN_REFLEN]; + sprintf(inc_filename, "%s/%s", xtrabackup_incremental_dir, + MB_CORRUPTED_PAGES_FILE); + corrupted_pages.read_from_file(inc_filename); + } + if (!corrupted_pages.empty()) + corrupted_pages.zero_out_free_pages(); + if (corrupted_pages.empty()) + { + if (!xtrabackup_incremental && unlink(MB_CORRUPTED_PAGES_FILE) && + errno != ENOENT) + { + char errbuf[MYSYS_STRERROR_SIZE]; + my_strerror(errbuf, sizeof(errbuf), errno); + die("Error: unlink %s failed: %s", MB_CORRUPTED_PAGES_FILE, + errbuf); + } + } + else + corrupted_pages.print_to_file(MB_CORRUPTED_PAGES_FILE); + if (xtrabackup_rollback_xa) { /* Please do not merge MDEV-21168 fix in 10.5+ */ @@ -5839,7 +6117,7 @@ static bool xtrabackup_prepare_func(char** argv) error_cleanup: xb_filters_free(); - return ok && !ib::error::was_logged(); + return ok && !ib::error::was_logged() && corrupted_pages.empty(); } /************************************************************************** diff --git a/extra/mariabackup/xtrabackup.h b/extra/mariabackup/xtrabackup.h index 2dbdd442f95..15d53d00db4 100644 --- a/extra/mariabackup/xtrabackup.h +++ b/extra/mariabackup/xtrabackup.h @@ -35,6 +35,32 @@ struct xb_delta_info_t ulint space_id; }; +class CorruptedPages +{ +public: + CorruptedPages(); + ~CorruptedPages(); + void add_page(const char *file_name, ulint space_id, ulint page_no); + bool contains(ulint space_id, ulint page_no) const; + void drop_space(ulint space_id); + void rename_space(ulint space_id, const std::string &new_name); + bool print_to_file(const char *file_name) const; + void read_from_file(const char *file_name); + bool empty() const; + void zero_out_free_pages(); + +private: + void add_page_no_lock(const char *space_name, ulint space_id, ulint page_no, + bool convert_space_name); + struct space_info_t { + std::string space_name; + std::set<ulint> pages; + }; + typedef std::map<ulint, space_info_t> container_t; + mutable pthread_mutex_t m_mutex; + container_t m_spaces; +}; + /* value of the --incremental option */ extern lsn_t incremental_lsn; @@ -110,6 +136,7 @@ extern my_bool opt_remove_original; extern my_bool opt_extended_validation; extern my_bool opt_encrypted_backup; extern my_bool opt_lock_ddl_per_table; +extern my_bool opt_log_innodb_page_corruption; extern char *opt_incremental_history_name; extern char *opt_incremental_history_uuid; |