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使用udev擴展ASM磁盤組

發布時間:2020-08-11 23:53:15 來源:ITPUB博客 閱讀:182 作者:haibing_168 欄目:服務器

環境:linux6.5 Oracle RAC集群兩節點,Oracle版本11.2.0.4

1.1.1   查看相關內容:

1 )磁盤情況:

[root@db1 ~]# fdisk -l

Disk /dev/sda: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000d2f26
 
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64       10444    83373056   8e  Linux LVM
 
Disk /dev/sdb: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/sdd: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/sdc: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/sde: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/sdf: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/sdg: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/sdh: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/mapper/vg_db1-lv_root: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/mapper/vg_db1-lv_swap: 8405 MB, 8405385216 bytes
255 heads, 63 sectors/track, 1021 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
 
 
Disk /dev/mapper/vg_db1-lv_home: 23.3 GB, 23278387200 bytes
255 heads, 63 sectors/track, 2830 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

2 ASM 磁盤情況:

SQL> select GROUP_NUMBER,DISK_NUMBER,MOUNT_STATUS,STATE,TOTAL_MB,PATH,NAME from v$asm_disk order by GROUP_NUMBER,DISK_NUMBER;

GROUP_NUMBER DISK_NUMBER MOUNT_S STATE           TOTAL_MB PATH                 NAME
------------ ----------- ------- -------- ---------- -------------------- --------------------
            1                0 CACHED  NORMAL        51200 /dev/asmdiske       DATA_0000
            1                1 CACHED  NORMAL        51200 /dev/asmdiskf        DATA_0001
            2                0 CACHED  NORMAL        20480 /dev/asmdiskg       ARCH_0000
            3                0 CACHED  NORMAL       1024 /dev/asmdiskb           OCR_0000
            3                1 CACHED  NORMAL       1024 /dev/asmdiskc            OCR_0001
            3                2 CACHED  NORMAL       1024 /dev/asmdiskd           OCR_0002
 
6 rows selected.

結論:ASM 掛了6 塊磁盤,通過容量可能看到有一塊21.5G 的未掛載進來,也新盤還未使用,查看21.5G 的磁盤,我們發現有 /dev/sdg /dev/sdh

3 ASM 磁盤對應物理盤:

[root@db1 rules.d]# pwd

/etc/udev/rules.d

[root@db1 rules.d]# more 99-x-asmdisk_new.rules

KERNEL=="sd?", ENV{ID_SERIAL}=="36000c29c5362298e7a9898225a9f8ed6", SYMLINK+="asmdiskb", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c2963776a39f75310d2f2bd98287", SYMLINK+="asmdiskc", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c29dd4c14aa6a5e4f77f40427565", SYMLINK+="asmdiskd", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c292b56645878eb55e7811673ae2", SYMLINK+="asmdiske", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c29ec780367d4c1f845c880f7f0e", SYMLINK+="asmdiskf", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c297777b8958d4d4dd5cd7ddbc47", SYMLINK+="asmdiskg", OWNER="grid", GROUP="asmadmin", MODE="0660"

[root@db1 rules.d]#

4 )確認下是哪塊磁盤未使用,查看磁盤ID ,與上面99-x-asmdisk_new.rules 內容對比后發現:

[root@db1 rules.d]# /lib/udev/scsi_id -g -u /dev/sdg      --- 該塊磁盤是新盤,未使用

36000c293ef0d560ff854306446331b79

[root@db1 rules.d]# /lib/udev/scsi_id -g -u /dev/sdh

36000c297777b8958d4d4dd5cd7ddbc47

1.1.2   將未使用磁盤進行掛載

目標:/dev/sdg ASM 磁盤組2 ARCH 當中

1 )首先修改文件99-x-asmdisk_new.rules ,修改完后如下內容:

[root@db1 rules.d]# more 99-x-asmdisk_new.rules

KERNEL=="sd?", ENV{ID_SERIAL}=="36000c29c5362298e7a9898225a9f8ed6", SYMLINK+="asmdiskb", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c2963776a39f75310d2f2bd98287", SYMLINK+="asmdiskc", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c29dd4c14aa6a5e4f77f40427565", SYMLINK+="asmdiskd", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c292b56645878eb55e7811673ae2", SYMLINK+="asmdiske", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c29ec780367d4c1f845c880f7f0e", SYMLINK+="asmdiskf", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c297777b8958d4d4dd5cd7ddbc47", SYMLINK+="asmdiskg", OWNER="grid", GROUP="asmadmin", MODE="0660"
KERNEL=="sd?", ENV{ID_SERIAL}=="36000c293ef0d560ff854306446331b79", SYMLINK+="asmdiskh", OWNER="grid", GROUP="asmadmin", MODE="0660"   ----增加新行

2 )重新載入udev 文件內容并啟動

[root@db1 rules.d]# udevadm control --reload-rules

[root@db1 rules.d]# start_udev

Starting udev:                                             [  OK  ]

啟動完之后可看到新加的磁盤 /dev/asmdiskh -> sdg

[root@db1 rules.d]# ls -l /dev/asm

total 0

[root@db1 rules.d]# ls -l /dev/asm*

lrwxrwxrwx 1 root root       3 May 19 15:13 /dev/asmdiskb -> sdf

lrwxrwxrwx 1 root root       3 May 19 15:13 /dev/asmdiskc -> sde

lrwxrwxrwx 1 root root       3 May 19 15:13 /dev/asmdiskd -> sdd

lrwxrwxrwx 1 root root       3 May 19 15:13 /dev/asmdiske -> sdb

lrwxrwxrwx 1 root root       3 May 19 15:13 /dev/asmdiskf -> sdc

lrwxrwxrwx 1 root root       3 May 19 15:13 /dev/asmdiskg -> sdh

lrwxrwxrwx 1 root root       3 May 19 15:13 /dev/asmdiskh -> sdg

3 )另一個節點做同樣的處理

[root@db2 rules.d]# vi 99-x-asmdisk_new.rules

[root@db2 rules.d]# udevadm control --reload-rules

[root@db2 rules.d]# start udev

start: Unknown job: udev

[root@db2 rules.d]# start_udev

Starting udev:                                             [  OK  ]

[root@db2 rules.d]# ls -l /dev/asm*

lrwxrwxrwx 1 root root       3 May 19 15:17 /dev/asmdiskb -> sdf

lrwxrwxrwx 1 root root       3 May 19 15:17 /dev/asmdiskc -> sde

lrwxrwxrwx 1 root root       3 May 19 15:17 /dev/asmdiskd -> sdd

lrwxrwxrwx 1 root root       3 May 19 15:17 /dev/asmdiske -> sdb

lrwxrwxrwx 1 root root       3 May 19 15:17 /dev/asmdiskf -> sdc

lrwxrwxrwx 1 root root       3 May 19 15:17 /dev/asmdiskg -> sdh

lrwxrwxrwx 1 root root       3 May 19 15:17 /dev/asmdiskh -> sdg

/dev/asm:

total 0

1.1.3   ASM 環境中將磁盤加入到磁盤組中:

1 )使用GRID 用戶進入ASM 實例中,查詢ASM 磁盤已經能看到該磁盤情況:

SQL> select GROUP_NUMBER,DISK_NUMBER,MOUNT_STATUS,STATE,TOTAL_MB,PATH,NAME from v$asm_disk order by GROUP_NUMBER,DISK_NUMBER;
 
GROUP_NUMBER DISK_NUMBER MOUNT_S STATE           TOTAL_MB PATH                 NAME
------------ ----------- ------- -------- ---------- -------------------- --------------------
            0                0 CLOSED  NORMAL           0 /dev/asmdiskh
            1                0 CACHED  NORMAL        51200 /dev/asmdiske       DATA_0000
            1                1 CACHED  NORMAL        51200 /dev/asmdiskf        DATA_0001
            2                0 CACHED  NORMAL        20480 /dev/asmdiskg       ARCH_0000
            3                0 CACHED  NORMAL       1024 /dev/asmdiskb           OCR_0000
            3                1 CACHED  NORMAL       1024 /dev/asmdiskc            OCR_0001
            3                2 CACHED  NORMAL       1024 /dev/asmdiskd           OCR_0002
 
7 rows selected.

2 )使用命令將磁盤加入到組ARCH 中。

使用 sqlplus ‘/as sysasm’ 登錄

SQL> alter diskgroup ARCH ADD DISK '/dev/asmdiskh';

查看磁盤組容量已經增加

SQL> select NAME,FREE_MB,TOTAL_MB FROM V$ASM_DISKGROUP;
 
NAME                                     FREE_MB   TOTAL_MB
------------------------------ ---------- ----------
DATA                                         99315     102400
ARCH                                        39294      40960
OCR                                 2787       3072

確認另一個節點情況:

SQL> select GROUP_NUMBER,DISK_NUMBER,MOUNT_STATUS,STATE,TOTAL_MB,PATH,NAME from v$asm_disk order by GROUP_NUMBER,DISK_NUMBER;
 
GROUP_NUMBER DISK_NUMBER MOUNT_S STATE           TOTAL_MB PATH                 NAME
------------ ----------- ------- -------- ---------- -------------------- --------------------
            1                0 CACHED  NORMAL        51200 /dev/asmdiske       DATA_0000
            1                1 CACHED  NORMAL        51200 /dev/asmdiskf        DATA_0001
            2                0 CACHED  NORMAL        20480 /dev/asmdiskg       ARCH_0000
            2                1 CACHED  NORMAL        20480 /dev/asmdiskh       ARCH_0001
            3                0 CACHED  NORMAL       1024 /dev/asmdiskb           OCR_0000
            3                1 CACHED  NORMAL       1024 /dev/asmdiskc            OCR_0001
            3                2 CACHED  NORMAL       1024 /dev/asmdiskd           OCR_0002
 
7 rows selected.

至此,磁盤ASM 擴展完畢。

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