informix-onbar

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informix onbar
本文使用PSM 进行备份
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一环境准备
[informix@node1 ~]$ cd /opt/dbs
[informix@node1 dbs]$ ll
total 6250052
-rw-rw---- 1 informix informix 2048000000 Mar 23 15:41 llogdbs
-rw-rw---- 1 informix informix 2048000000 Mar 23 15:40 plogdbs
-rw-rw----. 1 informix informix 2304038912 Mar 23 15:40 rootdbs

[informix@node1 dbs]$ touch datadbs1 datadbs2 datadbs3
[informix@node1 dbs]$ chmod 660 d*
[informix@node1 dbs]$ ls -al
total 6250060
drwxr-xr-x. 2 informix informix 4096 Mar 23 15:42 .
drwxr-xr-x. 5 root root 4096 Nov 18 10:54 ..
-rw-rw---- 1 informix informix 0 Mar 23 15:42 datadbs1
-rw-rw---- 1 informix informix 0 Mar 23 15:42 datadbs2
-rw-rw---- 1 informix informix 0 Mar 23 15:42 datadbs3
-rw-rw---- 1 informix informix 2048000000 Mar 23 15:41 llogdbs
-rw-rw---- 1 informix informix 2048000000 Mar 23 15:40 plogdbs
-rw-rw----. 1 informix informix 2304038912 Mar 23 15:40 rootdbs

onspaces -c -d datadbs1 -p /opt/dbs/datadbs1 -o 0 -s 100000
onspaces -c -d datadbs2 -p /opt/dbs/datadbs2 -o 0 -s 100000
onspaces -c -d datadbs3 -p /opt/dbs/datadbs3 -o 0 -s 100000

[informix@node1 dbs]$ ls -al
total 6550060
drwxr-xr-x. 2 informix informix 4096 Mar 23 15:42 .
drwxr-xr-x. 5 root root 4096 Nov 18 10:54 ..
-rw-rw---- 1 informix informix 102400000 Mar 23 15:45 datadbs1
-rw-rw---- 1 informix informix 102400000 Mar 23 15:45 datadbs2
-rw-rw---- 1 informix informix 102400000 Mar 23 15:45 datadbs3
-rw-rw---- 1 informix informix 2048000000 Mar 23 15:45 llogdbs
-rw-rw---- 1 informix informix 2048000000 Mar 23 15:45 plogdbs
-rw-rw----. 1 informix informix 2304038912 Mar 23 15:45 rootdbs

[informix@node1 dbs]$ dbaccess - -
create database test1 in datadbs1 with log;
create database test2 in datadbs2 with log;
create database test3 in datadbs3 with log;

database test1;
create table t1(a int);
insert into t1 values(1);

database test2;
create table t1(a int);
insert into t1 values(11);

database test3;
create table t1(a int);
insert into t1 values(111);

[informix@node1 dbs]$ echo 'select * from t1' |dbaccess test1 -
a

1 row(s) retrieved.

[informix@node1 dbs]$ echo 'select * from t1' |dbaccess test2 -

1 row(s) retrieved.

[informix@node1 dbs]$ echo 'select * from t1' |dbaccess test3 -

111

1 row(s) retrieved.

二准备工作
1 参数onconfig 文件（支持在线修改）

onmode -wf BAR_BSALIB_PATH=$INFORMIXDIR/lib/libbsapsm.so
onmode -wf ALARMPROGRAM=$INFORMIXDIR/etc/log_full.sh
onmode -wf LTAPEDEV=/home/informix/backup/LOGPOOL

2 启用 PSM
onpsm -D add /home/informix/backup/DBSPOOL -g DBSPOOL -p HIGHEST -t FILE
onpsm -D add /home/informix/backup/LOGPOOL -g LOGPOOL -p HIGHEST -t FILE

onpsm -D add /home/informix/backup2/DBSPOOL -g DBSPOOL -p HIGHEST -t FILE
onpsm -D add /home/informix/backup2/LOGPOOL -g LOGPOOL -p HIGHEST -t FILE

[informix@node1 backup]$ pwd
/home/informix/backup
[informix@node1 backup]$ ls -al
drwxrwx--- 2 informix informix 4096 Mar 23 15:59 DBSPOOL
drwxrwx--- 2 informix informix 4096 Mar 23 15:59 LOGPOOL

[informix@node1 backup]$ onpsm -D list

__PSM__ Device List

Type Prio Block/Size (MB) Pool Name Device Name
FILE LOW --/-- DBSPOOL /home/informix/gbase/backups
FILE HIGHEST --/-- DBSPOOL /home/informix/backup/DBSPOOL

FILE LOW --/-- LOGPOOL /home/informix/gbase/backups
FILE HIGHEST --/-- LOGPOOL /home/informix/backup/LOGPOOL

-- 删除LOW 级别的备份目录
onpsm -D del /home/informix/gbase/backups -d -g DBSPOOL -y
onpsm -D del /home/informix/gbase/backups -d -g LOGPOOL -y

[informix@node1 backup]$ onpsm -D list

__PSM__ Device List

Type Prio Block/Size (MB) Pool Name Device Name
FILE HIGHEST --/-- DBSPOOL /home/informix/backup/DBSPOOL

FILE HIGHEST --/-- LOGPOOL /home/informix/backup/LOGPOOL

三备份数据库
1 0级备份
[informix@node1 backup]$ onbar -b -L 0

2 查看日志信息
[informix@node1 ~]$ tail -100 /home/informix/gbase/tmp/online.log
16:03:21 Level 0 Archive started on datadbs3
16:03:22 Level 0 Archive started on datadbs2
16:03:22 Level 0 Archive started on datadbs1
16:03:22 Level 0 Archive started on plogdbs
16:03:22 Level 0 Archive started on llogdbs
16:03:22 Archive on llogdbs Completed.
16:03:22 Archive on datadbs3 Completed.
16:03:23 Archive on datadbs1 Completed.
16:03:23 Archive on datadbs2 Completed.
16:03:23 Archive on plogdbs Completed.
16:03:23 Logical Log 12 - Backup Started
16:03:23 Logical Log 12 - Backup Completed
16:03:24 Logical Log 12 Complete, timestamp: 0x62ae3.

3 查看BAR 备份日志
[informix@node1 backup]$ onstat -c |grep BAR_ACT
# BAR_ACT_LOG - The ON-Bar activity log file location.
BAR_ACT_LOG $INFORMIXDIR/tmp/bar_act.log

[informix@node1 backup]$ more $INFORMIXDIR/tmp/bar_act.log
2017-03-23 15:59:07 2474 2362 The PSM is ready.
2017-03-23 15:59:07 2474 2362 onpsm -D add /home/informix/backup/DBSPOOL -g DBSPOOL -p HIGHEST -t FILE
2017-03-23 15:59:07 2474 2362 The __PSM__ catalog is not present in the '/home/informix/gbase/etc/psm/' directory.
The system will try to create it.
2017-03-23 15:59:07 2474 2362 __PSM__ catalog creation in the '/home/informix/gbase/etc/psm/' directory succeeded.
2017-03-23 15:59:07 2474 2362 __PSM__ session 1 opened.
2017-03-23 15:59:07 2474 2362 __PSM__ session 1 closed
2017-03-23 15:59:07 2474 2362 onpsm complete, returning 0
2017-03-23 15:59:17 2477 2362 The PSM is ready.
2017-03-23 15:59:17 2477 2362 onpsm -D add /home/informix/backup/LOGPOOL -g LOGPOOL -p HIGHEST -t FILE
2017-03-23 15:59:17 2477 2362 __PSM__ session 2 opened.
2017-03-23 15:59:17 2477 2362 __PSM__ session 2 closed
2017-03-23 15:59:17 2477 2362 onpsm complete, returning 0
2017-03-23 16:00:12 2484 2362 The PSM is ready.
2017-03-23 16:00:12 2484 2362 onpsm -D list
2017-03-23 16:00:12 2484 2362 __PSM__ session 3 opened.
2017-03-23 16:00:12 2484 2362 __PSM__ session 3 closed
2017-03-23 16:00:12 2484 2362 onpsm complete, returning 0
2017-03-23 16:01:31 2503 2362 The PSM is ready.
2017-03-23 16:01:31 2503 2362 onpsm -D del /home/informix/gbase/backups -d -g DBSPOOL -y
2017-03-23 16:01:31 2503 2362 __PSM__ session 4 opened.
2017-03-23 16:01:31 2503 2362 __PSM__ session 4 closed
2017-03-23 16:01:31 2503 2362 onpsm complete, returning 0
2017-03-23 16:01:34 2504 2362 The PSM is ready.
.......
.......
copy ID: 0 9).
2017-03-23 16:03:23 2514 2512 __PSM__ session 15 closed
2017-03-23 16:03:23 2514 2512 Begin backup of critical file '/home/informix/gbase/etc/onconfig.gbaseserver'.
2017-03-23 16:03:23 2514 2512 The PSM is ready.
2017-03-23 16:03:23 2514 2512 __PSM__ session 16 opened.
2017-03-23 16:03:23 2514 2512 Successfully connected to Storage Manager.
2017-03-23 16:03:23 2514 2512 Completed backup of critical file '/home/informix/gbase/etc/onconfig.gbaseserver' (Storage Manage
r copy ID: 0 10).
2017-03-23 16:03:23 2514 2512 __PSM__ session 16 closed
2017-03-23 16:03:23 2514 2512 Begin backup of critical file '/home/informix/gbase/etc/sqlhosts.gbaseserver'.
2017-03-23 16:03:23 2514 2512 The PSM is ready.
2017-03-23 16:03:23 2514 2512 __PSM__ session 17 opened.
2017-03-23 16:03:23 2514 2512 Successfully connected to Storage Manager.
2017-03-23 16:03:23 2514 2512 Completed backup of critical file '/home/informix/gbase/etc/sqlhosts.gbaseserver' (Storage Manage
r copy ID: 0 11).
2017-03-23 16:03:23 2514 2512 __PSM__ session 17 closed
2017-03-23 16:03:23 2514 2512 /home/informix/gbase/bin/onbar_d complete, returning 0 (0x00)
2017-03-23 16:03:24 2539 2537 /home/informix/gbase/bin/onbar_d -b -l
2017-03-23 16:03:24 2539 2537 Using GBASE's PSM version 12.10.FC4G1 as the Storage Manager. XBSA API version is 1.0.3.
2017-03-23 16:03:24 2539 2537 /home/informix/gbase/bin/onbar_d complete, returning 0 (0x00)

4 备份目录
[informix@node1 DBSPOOL]$ cd gbaseserver/
[informix@node1 gbaseserver]$ ls -al
total 36
drwxrwx--- 9 informix informix 4096 Mar 23 16:03 .
drwxrwx--- 3 informix informix 4096 Mar 23 16:03 ..
drwxrwx--- 6 informix informix 4096 Mar 23 16:03 critical_files
drwxrwx--- 3 informix informix 4096 Mar 23 16:03 datadbs1
drwxrwx--- 3 informix informix 4096 Mar 23 16:03 datadbs2
drwxrwx--- 3 informix informix 4096 Mar 23 16:03 datadbs3
drwxrwx--- 3 informix informix 4096 Mar 23 16:03 llogdbs
drwxrwx--- 3 informix informix 4096 Mar 23 16:03 plogdbs
drwxrwx--- 3 informix informix 4096 Mar 23 16:03 rootdbs

[informix@node1 12]$ pwd
/home/informix/backup/LOGPOOL/gbaseserver/0/12
[informix@node1 12]$ ll
total 17536
-rw-rw---- 1 informix informix 17955031 Mar 23 16:03 gbaseserver.1.1

[informix@node1 12]$ onpsm -O list

__PSM__ Object List

Object ID Date Created Size (MB) Logical path (name.version)
1 2017-03-23 16:03:18 16.4 /gbaseserver/rootdbs/0/gbaseserver.1
2 2017-03-23 16:03:21 2.5 /gbaseserver/datadbs3/0/gbaseserver.1
3 2017-03-23 16:03:22 2.5 /gbaseserver/datadbs2/0/gbaseserver.1
4 2017-03-23 16:03:22 0.1 /gbaseserver/plogdbs/0/gbaseserver.1
5 2017-03-23 16:03:22 2.5 /gbaseserver/datadbs1/0/gbaseserver.1
6 2017-03-23 16:03:22 0.1 /gbaseserver/llogdbs/0/gbaseserver.1
7 2017-03-23 16:03:23 17.1 /gbaseserver/0/12/gbaseserver.1
8 2017-03-23 16:03:23 0.0 /gbaseserver/critical_files/ixbar/gbaseserver.1
9 2017-03-23 16:03:23 0.0 /gbaseserver/critical_files/oncfg/gbaseserver.1
10 2017-03-23 16:03:23 0.1 /gbaseserver/critical_files/onconfig/gbaseserver.1
11 2017-03-23 16:03:23 0.0 /gbaseserver/critical_files/sqlhosts/gbaseserver.1

四恢复数据库
1 模拟全部 DBSPACE 损坏
1）删除
cd /opt/dbs
rm -fr *
touch llogdbs plogdbs rootdbs datadbs1 datadbs2 datadbs3
chmod 660 *

2）恢复损坏 DBSPACE

[informix@node1 dbs]$ onbar -r

3) 将数据库从 Quiescent 改为 On-Line
[informix@node1 dbs]$ onstat -

GBase 8t Database Server Version 12.10.FC4G1AEE -- Quiescent -- Up 00:08:54 -- 535708 Kbytes

[informix@node1 dbs]$ onmode -m
[informix@node1 dbs]$ onstat -

GBase 8t Database Server Version 12.10.FC4G1AEE -- On-Line -- Up 00:09:04 -- 535708 Kbytes

2 模拟部分 DBSPACE 损坏
1）删除
cd /opt/dbs
rm -fr datadbs1 datadbs2 datadbs3
touch datadbs1 datadbs2 datadbs3
chmod 660 *

2）恢复损坏 DBSPACE ( 删掉的空间在线恢复需要加 -O 参数)
[informix@node1 dbs]$ oninit -vy
[informix@node1 dbs]$ onstat -

GBase 8t Database Server Version 12.10.FC4G1AEE -- On-Line -- Up 00:02:17 -- 535708 Kbytes

[informix@node1 dbs]$ ll
total 6250052
-rw-rw---- 1 informix informix 0 Mar 23 17:06 datadbs1
-rw-rw---- 1 informix informix 0 Mar 23 17:06 datadbs2
-rw-rw---- 1 informix informix 0 Mar 23 17:06 datadbs3
-rw-rw---- 1 informix informix 2048000000 Mar 23 17:12 llogdbs
-rw-rw---- 1 informix informix 2048000000 Mar 23 17:11 plogdbs
-rw-rw---- 1 informix informix 2304038912 Mar 23 17:11 rootdbs

[informix@node1 dbs]$ onbar -r datadbs1 datadbs2 datadbs3
[informix@node1 dbs]$ ll
total 6550064
-rw-rw---- 1 informix informix 102400000 Mar 23 17:14 datadbs1
-rw-rw---- 1 informix informix 102400000 Mar 23 17:14 datadbs2
-rw-rw---- 1 informix informix 102400000 Mar 23 17:14 datadbs3
-rw-rw---- 1 informix informix 2048000000 Mar 23 17:14 llogdbs
-rw-rw---- 1 informix informix 2048000000 Mar 23 17:14 plogdbs
-rw-rw---- 1 informix informix 2304038912 Mar 23 17:14 rootdbs

[informix@node1 dbs]$ dbaccess test1 -

Database selected.

> select * from t1;

1 row(s) retrieved.

注：参数 ONDBSPACEDOWN 需要设置为0
[informix@node1 etc]$ vi onconfig.gbaseserver
# ONDBSPACEDOWN - Specifies how Informix behaves when it encounters a
# dbspace that is offline. Acceptable values
# are:
# 0 Continue
# 1 Stop
# 2 Wait for DBA action
###################################################################
#ONDBSPACEDOWN 2
ONDBSPACEDOWN 0

3 恢复到某个时间点
1) 模拟数据
[informix@node1 dbs]$ dbaccess test1 -

Database selected.

> create table t2(a int ,b datetime year to second);

> insert into t2 values(1,current);

1 row(s) inserted.

> select * from t2;

a b

1 2017-03-24 09:24:44
1 2017-03-24 09:24:47
1 2017-03-24 09:24:51
1 2017-03-24 09:25:30
1 2017-03-24 09:25:35
2 2017-03-24 09:26:58

2 2017-03-24 09:27:04
2 2017-03-24 09:27:07
3 2017-03-24 09:27:38
3 2017-03-24 09:27:44
3 2017-03-24 09:27:48
4 2017-03-24 09:28:24
4 2017-03-24 09:28:28
4 2017-03-24 09:28:32
5 2017-03-24 09:28:43
5 2017-03-24 09:28:46
5 2017-03-24 09:28:50
6 2017-03-24 09:29:19
6 2017-03-24 09:29:23

19 row(s) retrieved.

2）删除
cd /opt/dbs
rm -fr rootdbs datadbs1 datadbs2 datadbs3
touch rootdbs datadbs1 datadbs2 datadbs3
chmod 660 *

3）恢复到某个时间点 2017-03-24 09:26:58
(
可多次执行，但是如果执行过某个时间的恢复后，要恢复到最好，要执行时间，否则还是上次恢复的数据
更改/home/informix/gbase/etc/ixbar.0 文件最后的记录或可能，但是其文件内容不知，更改难度大)

export GL_DATETIME="%iY-%m-%d %H:%M:%S"

[informix@node1 dbs]$ onbar -r -t "2017-03-24 09:26:58"

[informix@node1 dbs]$ onbar -r -t "2017-03-24 09:28:50"

3) 将数据库从 Quiescent 改为 On-Line
[informix@node1 dbs]$ onstat -

GBase 8t Database Server Version 12.10.FC4G1AEE -- Quiescent -- Up 00:08:54 -- 535708 Kbytes

[informix@node1 dbs]$ onmode -m
[informix@node1 dbs]$ onstat -

GBase 8t Database Server Version 12.10.FC4G1AEE -- On-Line -- Up 00:09:04 -- 535708 Kbytes

> insert into t11 (b ) values(current);

1 row(s) inserted.

> select * from t11;

a 1636145
b 2017-03-27 13:49:43

a 1636146
b 2017-03-27 13:49:47

a 1636147
b 2017-03-27 13:51:04

a 1636148
b 2017-03-27 13:51:08

a 1636149
b 2017-03-27 13:51:12

a 1636150
b 2017-03-27 13:51:33

a 1636151
b 2017-03-27 13:51:38

a 1636152
b 2017-03-27 13:51:59

a 1636153
b 2017-03-27 13:52:04

a 1636154
b 2017-03-27 13:52:08

a 1636155
b 2017-03-27 13:52:23

a 1636156
b 2017-03-27 13:52:28

a 1636157
b 2017-03-27 13:52:32

13 row(s) retrieved.

>
[informix@node1 ~]$ onpsm -D list

__PSM__ Device List

Type Prio Block/Size (MB) Pool Name Device Name
FILE READ-ONLY --/-- DBSPOOL /home/informix/backup/DBSPOOL

FILE HIGHEST --/-- LOGPOOL /home/informix/backup/LOGPOOL

onpsm -D update /home/informix/backup/DBSPOOL -g DBSPOOL -p HIGHEST

[informix@node1 ~]$ onpsm -D list

__PSM__ Device List

Type Prio Block/Size (MB) Pool Name Device Name
FILE HIGHEST --/-- DBSPOOL /home/informix/backup/DBSPOOL

FILE HIGHEST --/-- LOGPOOL /home/informix/backup/LOGPOOL

onpsm -D del /home/informix/backups/DBSPOOL -d -g DBSPOOL -y
onpsm -D del /home/informix/backups/LOGPOOL -d -g LOGPOOL -y

onpsm -D add /home/informix/backup/DBSPOOL -g DBSPOOL -p HIGHEST -t FILE
onpsm -D add /home/informix/backup/LOGPOOL -g LOGPOOL -p HIGHEST -t FILE

rm -fr dbs3
touch dbs3
chmod 660 dbs3
[informix@node1 dbs]$ onbar -r dbs3
2017-04-07 16:46:08 5603 5601 /home/informix/gbase/bin/onbar_d -r dbs3
2017-04-07 16:46:08 5603 5601 Using GBASE's PSM version 12.10.FC4G1 as the Storage Manager. XBSA API version is 1.0.3.
2017-04-07 16:46:08 5603 5601 (-43394) Storage space dbs3 is not down so it will not be restored.
2017-04-07 16:46:08 5603 5601 There are no storage spaces/logical logs to backup/restore.
2017-04-07 16:46:08 5603 5601 /home/informix/gbase/bin/onbar_d complete, returning 147 (0x93)

[informix@node1 dbs]$ onbar -r -O dbs3
2017-04-07 16:48:11 5615 5613 /home/informix/gbase/bin/onbar_d -r -O dbs3
2017-04-07 16:48:11 5615 5613 Using GBASE's PSM version 12.10.FC4G1 as the Storage Manager. XBSA API version is 1.0.3.
2017-04-07 16:48:11 5615 5613 (-43385) Restoring dbs3 even though it is online.
2017-04-07 16:48:12 5615 5613 The PSM is ready.
2017-04-07 16:48:12 5615 5613 __PSM__ session 1710 opened.
2017-04-07 16:48:12 5615 5613 Successfully connected to Storage Manager.
2017-04-07 16:48:12 5615 5613 Begin warm level 0 restore dbs3 (Storage Manager copy ID: 0 1061).
2017-04-07 16:48:15 5615 5613 Completed warm level 0 restore dbs3.
2017-04-07 16:48:15 5615 5613 __PSM__ session 1710 closed
2017-04-07 16:48:15 5615 5613 Begin backup logical log 63.
2017-04-07 16:48:15 5615 5613 The PSM is ready.
2017-04-07 16:48:15 5615 5613 __PSM__ session 1711 opened.
2017-04-07 16:48:15 5615 5613 Successfully connected to Storage Manager.
2017-04-07 16:48:15 5615 5613 Completed backup logical log 63 (Storage Manager copy ID: 0 1076).
2017-04-07 16:48:15 5615 5613 __PSM__ session 1711 closed
2017-04-07 16:48:16 5615 5613 The PSM is ready.
2017-04-07 16:48:16 5615 5613 __PSM__ session 1712 opened.
2017-04-07 16:48:16 5623 5621 /home/informix/gbase/bin/onbar_d -b -l
2017-04-07 16:48:16 5615 5613 Successfully connected to Storage Manager.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 55 (Storage Manager copy ID: 0 1064).
2017-04-07 16:48:16 5623 5621 Using GBASE's PSM version 12.10.FC4G1 as the Storage Manager. XBSA API version is 1.0.3.
2017-04-07 16:48:16 5623 5621 /home/informix/gbase/bin/onbar_d complete, returning 0 (0x00)
2017-04-07 16:48:16 5615 5613 Completed restore logical log 55.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 56 (Storage Manager copy ID: 0 1069).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 56.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 57 (Storage Manager copy ID: 0 1070).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 57.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 58 (Storage Manager copy ID: 0 1071).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 58.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 59 (Storage Manager copy ID: 0 1072).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 59.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 60 (Storage Manager copy ID: 0 1073).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 60.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 61 (Storage Manager copy ID: 0 1074).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 61.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 62 (Storage Manager copy ID: 0 1075).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 62.
2017-04-07 16:48:16 5615 5613 Begin restore logical log 63 (Storage Manager copy ID: 0 1076).
2017-04-07 16:48:16 5615 5613 Completed restore logical log 63.
2017-04-07 16:48:17 5615 5613 Completed logical restore.
2017-04-07 16:48:17 5615 5613 __PSM__ session 1712 closed
2017-04-07 16:48:17 5615 5613 /home/informix/gbase/bin/onbar_d complete, returning 177 (0xb1)

五镜像的CHUNK 的恢复
1 启用镜像
[informix@node1 dbs]$ onspaces -c -d data1 -p /u02/gbase/dbs/data1 -o 0 -s 100000 -m /u02/gbase/dbs/data1-2 0
GBase 8t Database Server was initialized with no mirroring.

[informix@node1 dbs]$ onstat -c|grep MIRROR
MIRROR 1
#MIRRORPATH $INFORMIXDIR/tmp/demo_on.root_mirror
MIRROROFFSET 0

2 创建使用镜像的 SPACE
[informix@node1 dbs]$ touch data1 data1-2
[informix@node1 dbs]$ chmod 660 *
[informix@node1 dbs]$ onspaces -c -d data1 -p /u02/gbase/dbs/data1 -o 0 -s 100000 -m /u02/gbase/dbs/data1-2 0
Verifying physical disk space, please wait ...
Verifying physical disk space, please wait ...
Space successfully added.

** WARNING ** A level 0 archive of Root DBSpace will need to be done.

[informix@node1 dbs]$ dbaccess - -
> create database db1 in data1 with log;

Database created.

> select count(1) from t1;

(count)

128

1 row(s) retrieved.

[informix@node1 gbaseexam]$ onstat -d|grep data
462895b0 9 0x40002 13 1 2048 M BA informix data1
Metadata 3389 2522 3389
7ea91028 13 9 0 50000 48201 PO-B-- /u02/gbase/dbs/data1
7ea70028 13 9 0 50000 0 MO-B-- /u02/gbase/dbs/data1-2

3 模拟损坏data1-2 恢复
1）损坏
[informix@node1 dbs]$ dd if=/dev/null of=data1-2 bs=1 count=100
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000120653 s, 0.0 kB/s

[informix@node1 dbs]$ ll
total 5966936
-rw-rw---- 1 informix informix 102400000 Apr 13 09:23 data1
-rw-rw---- 1 informix informix 0 Apr 13 09:25 data1-2

[informix@node1 dbs]$ onstat -d |grep data
462895b0 9 0x40002 13 1 2048 M BA informix data1
Metadata 3389 2522 3389
7ea91028 13 9 0 50000 48201 PO-B-- /u02/gbase/dbs/data1
7ea70028 13 9 0 50000 0 MO-B-- /u02/gbase/dbs/data1-2

2）将一个CHUNK 标记为DOWN
[informix@node1 dbs]$ onspaces -s data1 -p /u02/gbase/dbs/data1-2 -o 0 -D
Warning: bringing down a chunk.
Do you really want to continue? (y/n)y
Chunk status successfully changed.

[informix@node1 dbs]$ onstat -d|grep data
462895b0 9 0x60002 13 1 2048 M BA informix data1
Metadata 3389 2522 3389
7ea91028 13 9 0 50000 48201 PO-B-- /u02/gbase/dbs/data1
7ea70028 13 9 0 50000 0 MD-B-- /u02/gbase/dbs/data1-2

3）恢复CHUNK
[informix@node1 gbaseexam]$ onspaces -s data1 -p /u02/gbase/dbs/data1-2 -o 0 -O
WARNING: bringing a down chunk into recovery state.
Do you really want to continue? (y/n)y
Verifying physical disk space, please wait ...
Chunk status successfully changed.

[informix@node1 gbaseexam]$ onstat -d|grep data
462895b0 9 0x60002 13 1 2048 M BA informix data1
Metadata 3389 2522 3389
7ea91028 13 9 0 50000 48201 PO-B-- /u02/gbase/dbs/data1
7ea70028 13 9 0 50000 0 MO-B-- /u02/gbase/dbs/data1-2

4 损坏另一个CHUNK
1)损坏
[informix@node1 dbs]$ dd if=/dev/null of=data1 bs=1 count=100
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.0003378 s, 0.0 kB/s

[informix@node1 dbs]$ ll
total 5966936
-rw-rw---- 1 informix informix 0 Apr 13 09:34 data1
-rw-rw---- 1 informix informix 102400000 Apr 13 09:32 data1-2

2）标记DOWN
[informix@node1 dbs]$ onspaces -s data1 -p /u02/gbase/dbs/data1 -o 0 -D
Warning: bringing down a chunk.
Do you really want to continue? (y/n)y
Chunk status successfully changed.

[informix@node1 dbs]$ onstat -d|grep data
462895b0 9 0x60002 13 1 2048 M BA informix data1
Metadata 3389 2522 3389
7ea91028 13 9 0 50000 0 PD-B-- /u02/gbase/dbs/data1
7ea70028 13 9 0 50000 48201 MO-B-- /u02/gbase/dbs/data1-2

3）恢复
[informix@node1 dbs]$ onspaces -s data1 -p /u02/gbase/dbs/data1 -o 0 -O
WARNING: bringing a down chunk into recovery state.
Do you really want to continue? (y/n)y
Verifying physical disk space, please wait ...
Chunk status successfully changed.

5 2个CHUNK 不能同时损坏
[informix@node1 dbs]$ onspaces -s data1 -p /u02/gbase/dbs/data1 -o 0 -D
Warning: bringing down a chunk.
Do you really want to continue? (y/n)y
Chunk status successfully changed.
[informix@node1 dbs]$ onspaces -s data1 -p /u02/gbase/dbs/data1-2 -o 0 -D
Cannot bring this chunk down, it is currently the only chunk up.

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