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Bug #83741 - InnoDB: Failing assertion: lock->magic_n == 22643 #111

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Bug #83741 - InnoDB: Failing assertion: lock->magic_n == 22643 #111

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044e5d7
add sql/mysqld.h
Jul 27, 2015
fabb740
add sql/mysqld.cc
Jul 27, 2015
a3e5ad6
Bug #83741 - InnoDB: Failing assertion: lock->magic_n == 22643
elshadaghazade Nov 12, 2016
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30 changes: 30 additions & 0 deletions sql/mysqld.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@
#include <functional>
#include <list>
#include <set>
#include <unistd.h> // this library will help us to detect file system status
#include <string.h>
#include <string>

#include <fenv.h>
Expand Down Expand Up @@ -4389,6 +4391,21 @@ static void test_lc_time_sz()
}
#endif//DBUG_OFF

// checks if file system is read-only
int is_filesystem_read_only(char const* name) {
if (access(name, W_OK) == -1) {
if (access(name, R_OK) == 0) {
return R_OK; // read only
} else if (access(name, F_OK) == 0) {
return F_OK; // file exists but have not any access
} else {
return -1; // file does not exist
}
} else {
return W_OK; // read/write
}
}

#ifdef _WIN32
int win_main(int argc, char **argv)
#else
Expand All @@ -4411,6 +4428,19 @@ int mysqld_main(int argc, char **argv)
my_message_local(ERROR_LEVEL, "my_init() failed.");
return 1;
}

// Get --datadir value to check if filesystem is read-only
for (int i = 1; i < argc; i++) {
if (strstr(argv[i], "--datadir")) {
std::string str(argv[i]);
char const* dataDirPath = str.substr(10, str.length()).c_str();
if (is_filesystem_read_only(dataDirPath) == R_OK) {
my_message_local(ERROR_LEVEL, "File system (%s) is read-only", dataDirPath);
return 1;
}
break;
}
}
#endif /* _WIN32 */

orig_argc= argc;
Expand Down
1 change: 1 addition & 0 deletions sql/mysqld.h
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Expand Up @@ -95,6 +95,7 @@ void my_init_signals();
bool gtid_server_init();
void gtid_server_cleanup();
const char *fixup_enforce_gtid_consistency_command_line(char *value_arg);
int is_filesystem_read_only(char const* path);

extern "C" MYSQL_PLUGIN_IMPORT CHARSET_INFO *system_charset_info;
extern MYSQL_PLUGIN_IMPORT CHARSET_INFO *files_charset_info ;
Expand Down
5 changes: 3 additions & 2 deletions storage/innobase/row/row0mysql.cc
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Expand Up @@ -3109,10 +3109,11 @@ row_create_index_for_mysql(
len = ut_max(len, field_lengths[i]);
}

DBUG_EXECUTE_IF(
// bug fix for http://bugs.mysql.com/bug.php?id=83741
/*DBUG_EXECUTE_IF(
"ib_create_table_fail_at_create_index",
len = DICT_MAX_FIELD_LEN_BY_FORMAT(table) + 1;
);
);*/

/* Column or prefix length exceeds maximum column length */
if (len > (ulint) DICT_MAX_FIELD_LEN_BY_FORMAT(table)) {
Expand Down