mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-05-16 20:07:13 +02:00
Code Issues Projects Releases Packages Wiki Activity

trx0sys.c, srv0start.c, ibuf0ibuf.c, trx0sys.h, srv0srv.h:

Browse source 
DO NOT MERGE TO 4.1: add code for automatic downgrade 4.1.1 -> 4.0 if the user has not created multiple tablespaces yet


innobase/include/srv0srv.h:
  DO NOT MERGE TO 4.1: add code for automatic downgrade 4.1.1 -> 4.0 if the user has not created multiple tablespaces yet
innobase/include/trx0sys.h:
  DO NOT MERGE TO 4.1: add code for automatic downgrade 4.1.1 -> 4.0 if the user has not created multiple tablespaces yet
innobase/ibuf/ibuf0ibuf.c:
  DO NOT MERGE TO 4.1: add code for automatic downgrade 4.1.1 -> 4.0 if the user has not created multiple tablespaces yet
innobase/srv/srv0start.c:
  DO NOT MERGE TO 4.1: add code for automatic downgrade 4.1.1 -> 4.0 if the user has not created multiple tablespaces yet
innobase/trx/trx0sys.c:
  DO NOT MERGE TO 4.1: add code for automatic downgrade 4.1.1 -> 4.0 if the user has not created multiple tablespaces yet
This commit is contained in:
unknown 2004-01-06 13:40:14 +02:00
commit 7219513743
5 changed files with 140 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

88
innobase/trx/trx0sys.c
View file

@ -34,6 +34,43 @@ or there was no master log position info inside InnoDB. */
char trx_sys_mysql_master_log_name[TRX_SYS_MYSQL_LOG_NAME_LEN];
ib_longlong trx_sys_mysql_master_log_pos = -1;
/* Do NOT merge this to the 4.1 code base! */
ibool trx_sys_downgrading_from_4_1_1 = FALSE;
/********************************************************************
Do NOT merge this to the 4.1 code base!
Marks the trx sys header when we have successfully downgraded from the >= 4.1.1
multiple tablespace format back to the 4.0 format. */
void
trx_sys_mark_downgraded_from_4_1_1(void)
/*====================================*/
{
page_t* page;
byte* doublewrite;
mtr_t mtr;
/* Let us mark to the trx_sys header that the downgrade has been
done. */
mtr_start(&mtr);
page = buf_page_get(TRX_SYS_SPACE, TRX_SYS_PAGE_NO, RW_X_LATCH, &mtr);
buf_page_dbg_add_level(page, SYNC_NO_ORDER_CHECK);
doublewrite = page + TRX_SYS_DOUBLEWRITE;
mlog_write_ulint(doublewrite + TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED,
TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED_N + 1,
MLOG_4BYTES, &mtr);
mtr_commit(&mtr);
/* Flush the modified pages to disk and make a checkpoint */
log_make_checkpoint_at(ut_dulint_max, TRUE);
trx_sys_downgrading_from_4_1_1 = FALSE;
}
/********************************************************************
Determines if a page number is located inside the doublewrite buffer. */
@ -138,12 +175,36 @@ start_again:
if (mach_read_from_4(doublewrite + TRX_SYS_DOUBLEWRITE_MAGIC)
== TRX_SYS_DOUBLEWRITE_MAGIC_N) {
/* Do NOT merge to the 4.1 code base! */
if (mach_read_from_4(doublewrite
+ TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED)
== TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED_N) {
fprintf(stderr,
"InnoDB: You are downgrading from the multiple tablespace format of\n"
"InnoDB: >= MySQL-4.1.1 back to the old format of MySQL-4.0.\n"
"InnoDB:\n"
"InnoDB: MAKE SURE that the mysqld server is idle, and purge and the insert\n"
"InnoDB: buffer merge have run to completion under >= 4.1.1 before trying to\n"
"InnoDB: downgrade! You can determine this by looking at SHOW INNODB STATUS:\n"
"InnoDB: if the Main thread is 'waiting for server activity' and SHOW\n"
"InnoDB: PROCESSLIST shows that you have ended all other connections\n"
"InnoDB: to mysqld, then purge and the insert buffer merge have been\n"
"InnoDB: completed.\n"
"InnoDB: If you have already created .ibd tables in >= 4.1.1, then those\n"
"InnoDB: tables cannot be used under 4.0.\n"
"InnoDB: NOTE THAT this downgrade procedure has not been properly tested!\n"
"InnoDB: The safe way to downgrade is to dump all InnoDB tables and recreate\n"
"InnoDB: the whole tablespace.\n");
trx_sys_downgrading_from_4_1_1 = TRUE;
}
/* The doublewrite buffer has already been created:
just read in some numbers */
trx_doublewrite_init(doublewrite);
mtr_commit(&mtr);
} else {
fprintf(stderr,
@ -295,6 +356,31 @@ trx_sys_doublewrite_restore_corrupt_pages(void)
== TRX_SYS_DOUBLEWRITE_MAGIC_N) {
/* The doublewrite buffer has been created */
/* Do NOT merge to the 4.1 code base! */
if (mach_read_from_4(doublewrite
+ TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED)
== TRX_SYS_DOUBLEWRITE_SPACE_ID_STORED_N) {
fprintf(stderr,
"InnoDB: You are downgrading from the multiple tablespace format of\n"
"InnoDB: >= MySQL-4.1.1 back to the old format of MySQL-4.0.\n"
"InnoDB:\n"
"InnoDB: MAKE SURE that the mysqld server is idle, and purge and the insert\n"
"InnoDB: buffer merge have run to completion under >= 4.1.1 before trying to\n"
"InnoDB: downgrade! You can determine this by looking at SHOW INNODB STATUS:\n"
"InnoDB: if the Main thread is 'waiting for server activity' and SHOW\n"
"InnoDB: PROCESSLIST shows that you have ended all other connections\n"
"InnoDB: to mysqld, then purge and the insert buffer merge have been\n"
"InnoDB: completed.\n"
"InnoDB: If you have already created .ibd tables in >= 4.1.1, then those\n"
"InnoDB: tables cannot be used under 4.0.\n"
"InnoDB: NOTE THAT this downgrade procedure has not been properly tested!\n"
"InnoDB: The safe way to downgrade is to dump all InnoDB tables and recreate\n"
"InnoDB: the whole tablespace.\n");
trx_sys_downgrading_from_4_1_1 = TRUE;
}
trx_doublewrite_init(doublewrite);
block1 = trx_doublewrite->block1;