虛擬機(jī)：VMware Workstation 9

操作系統(tǒng)：Red Hat Enterprise Linux Server release 5.6

系統(tǒng)內(nèi)核：2.6.18-238.el5

數(shù)據(jù)庫(kù)：Oracle Database 11.2.0.1

之前已經(jīng)基于udev的方式創(chuàng)建過(guò)ASM磁盤，而且已經(jīng)安裝好Oracle Grid 、Oracle Database，并創(chuàng)建好了數(shù)據(jù)庫(kù)，接下來(lái)將添加4塊1G磁盤，分別擴(kuò)展現(xiàn)有ASM磁盤組DG_DATA，新建ASM磁盤組DG_NEW_DATA。

查看新添加的磁盤，分別為/dev/sdb、/dev/sdg、/dev/sdh、/dev/sdi。

[root@ora32 dev]# fdisk -l

Disk /dev/sda: 23.6 GB, 23622320128 bytes

255 heads, 63 sectors/track, 2871 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          65      522081   83  Linux

/dev/sda2              66         457     3148740   82  Linux swap / Solaris

/dev/sda3             458        2871    19390455   8e  Linux LVM

Disk /dev/sdb: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdb doesn\\\’t contain a valid partition table

Disk /dev/sdc: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1         261     2096451   83  Linux

Disk /dev/sdd: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdd1               1         261     2096451   83  Linux

Disk /dev/sde: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sde1               1         261     2096451   83  Linux

Disk /dev/sdf: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdf1               1         261     2096451   83  Linux

Disk /dev/sdg: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdg doesn\\\’t contain a valid partition table

Disk /dev/sdh: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdh doesn\\\’t contain a valid partition table

Disk /dev/sdi: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdi doesn\\\’t contain a valid partition table

分別對(duì)4塊磁盤進(jìn)行分區(qū)，每塊磁盤分1個(gè)區(qū)即可。

[root@ora32 dev]# fdisk -l

Disk /dev/sda: 23.6 GB, 23622320128 bytes

255 heads, 63 sectors/track, 2871 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          65      522081   83  Linux

/dev/sda2              66         457     3148740   82  Linux swap / Solaris

/dev/sda3             458        2871    19390455   8e  Linux LVM

Disk /dev/sdb: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1         130     1044193   83  Linux

Disk /dev/sdc: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1         261     2096451   83  Linux

Disk /dev/sdd: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdd1               1         261     2096451   83  Linux

Disk /dev/sde: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sde1               1         261     2096451   83  Linux

Disk /dev/sdf: 2147 MB, 2147483648 bytes

255 heads, 63 sectors/track, 261 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdf1               1         261     2096451   83  Linux

Disk /dev/sdg: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdg1               1         130     1044193   83  Linux

Disk /dev/sdh: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdh2               1         130     1044193   83  Linux

Disk /dev/sdi: 1073 MB, 1073741824 bytes

255 heads, 63 sectors/track, 130 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

/dev/sdi1               1         130     1044193   83  Linux

現(xiàn)在需要通過(guò)udev來(lái)管理這幾個(gè)磁盤設(shè)備文件，通過(guò)規(guī)則文件將磁盤映射為固定名稱，并賦予所屬用戶，用戶組，操作權(quán)限等。

查看udev規(guī)則文件

[root@ora32 dev]# cd /etc/udev/rules.d

[root@ora32 rules.d]# ll

total 248

-rw-r–r– 1 root root   515 Nov 25  2010 05-udev-early.rules

-rw-r–r– 1 root root   948 Dec  8  2010 40-multipath.rules

-rw-r–r– 1 root root 16153 Nov 25  2010 50-udev.rules

-rw-r–r– 1 root root   163 Dec 11  2010 51-dlm.rules

-rw-r–r– 1 root root   471 Nov 25  2010 51-hotplug.rules

-rw-r–r– 1 root root   138 May 10 17:28 55-usm.rules

-rw-r–r– 1 root root 58016 Oct 13  2006 60-libsane.rules

-rw-r–r– 1 root root   143 Oct 13  2010 60-net.rules

-rw-r–r– 1 root root  1088 Jul 18  2006 60-pcmcia.rules

-rw-r–r– 1 root root   316 Sep 22  2010 60-raw.rules

-rw-r–r– 1 root root  9175 Nov 13  2010 60-wacom.rules

-rw-r–r– 1 root root   129 Nov 30  2010 61-uinput-stddev.rules

-rw-r–r– 1 root root   214 Nov 30  2010 61-uinput-wacom.rules

-rw-r–r– 1 root root  1823 Sep 19  2008 85-pcscd_ccid.rules

-rw-r–r– 1 root root   114 Aug 29  2008 90-alsa.rules

-rw-r–r– 1 root root    61 Nov 25  2010 90-dm.rules

-rw-r–r– 1 root root    82 Nov  4  2010 90-hal.rules

-rw-r–r– 1 root root   107 Nov 25  2010 95-pam-console.rules

-rw-r–r– 1 root root   292 Nov 30  2010 98-kexec.rules

-rw-r–r– 1 root root   669 May 13 13:51 99-oracle-asmdevices.rules

-rw-r–r– 1 root root    60 Sep 16  2012 99-oracle.rules

-rw-r–r– 1 root root   334 Sep 15  2012 99-vmware-scsi-udev.rules

-rw-r–r– 1 root root  2319 Jul  9  2008 bluetooth.rules

udev規(guī)則文件“99-oracle-asmdevices.rules”之前已經(jīng)創(chuàng)建好，看一下當(dāng)前的映射規(guī)則和ASM磁盤情況。

[root@ora32 rules.d]# cat 99-oracle-asmdevices.rules

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29c9a269653c7cd04ea2edb0c71, NAME=ASM_DISK_2G_1, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29861258ebc95eded634a1f36fd, NAME=ASM_DISK_2G_2, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c296fd09d9ed213df1999820ca89, NAME=ASM_DISK_2G_3, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c2934ae12fd4af0dd366d85b42f5,  NAME=ASM_DISK_2G_4, WNER=grid, GROUP=asmadmin, MODE=0660

規(guī)則解釋，以第一條為例。

系統(tǒng)啟動(dòng)時(shí)，udev根據(jù)系統(tǒng)總線scsi（BUS==scsi）和內(nèi)核設(shè)備文件名sd?1（KERNEL==sd?1），過(guò)濾出需要?jiǎng)討B(tài)映射的設(shè)備，然后再利用/sbin/scsi_id（PROGRAM==/sbin/scsi_id）命令輸出的SCSI磁盤id，輸出結(jié)果中匹配上36000c29c9a269653c7cd04ea2edb0c71的SCSI磁盤，則會(huì)應(yīng)用后續(xù)的命名、授權(quán)等操作（NAME=ASM_DISK_2G_1, WNER=grid, GROUP=asmadmin, MODE=0660），SCSI磁盤ID可以通過(guò)/sbin/scsi_id命令獲取。

[root@ora32 rules.d]# /sbin/scsi_id -g -s /block/sdc/sdc1

36000c29c9a269653c7cd04ea2edb0c71

[root@ora32 rules.d]# /sbin/scsi_id -g -s /block/sdd/sdd1

36000c29861258ebc95eded634a1f36fd

[root@ora32 rules.d]# /sbin/scsi_id -g -s /block/sde/sde1

36000c296fd09d9ed213df1999820ca89

[root@ora32 rules.d]# /sbin/scsi_id -g -s /block/sdf/sdf1

36000c2934ae12fd4af0dd366d85b42f5

從上述結(jié)果可以看出，udev已經(jīng)做了如下映射關(guān)系。

/block/sdc/sdc1 => ASM_DISK_2G_1

/block/sdd/sdd1 => ASM_DISK_2G_2

/block/sde/sde1 => ASM_DISK_2G_3

/block/sdf/sdf1 => ASM_DISK_2G_4

[grid@ora32 dev]$ ll ASM*

brw-rw—- 1 grid asmadmin 8, 33 May 13 14:57 ASM_DISK_2G_1

brw-rw—- 1 grid asmadmin 8, 49 May 13 14:57 ASM_DISK_2G_2

brw-rw—- 1 grid asmadmin 8, 65 May 13 14:54 ASM_DISK_2G_3

brw-rw—- 1 grid asmadmin 8, 81 May 13 14:57 ASM_DISK_2G_4

通過(guò)Oracle視圖看一下當(dāng)前磁盤組、磁盤的使用情況。

[grid@ora32 ~]$ sqlplus / as sysasm

SQL*Plus: Release 11.2.0.1.0 Production on Mon May 13 14:54:01 2013

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 – 64bit Production

With the Automatic Storage Management option

SQL>

SQL>

SQL> col name for a10

SQL> SELECT group_number,name,type,state,total_mb,free_mb,offline_disks FROM V$ASM_diskgroup;

GROUP_NUMBER NAME       TYPE   STATE         TOTAL_MB    FREE_MB OFFLINE_DISKS

———— ———- —— ———– ———- ———- ————-

           1 DG_DATA    EXTERN MOUNTED           8188       6448             0

SQL> col group# for 99

SQL> col disk# for 99

SQL> col name for a5

SQL> col path for a11

SQL> col LABEL for a7

SQL> col FAILGROUP for a10

SQL> select GROUP_NUMBER group#,DISK_NUMBER disk#,LABEL,STATE,FAILGROUP,name,path,TOTAL_MB,FREE_MB from v$asm_disk;

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

     1     2         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1612

                              02         TA_00 SK_2G_3

                                         02

     1     3         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1611

                              03         TA_00 SK_2G_4

                                         03

     1     1         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1613

                              01         TA_00 SK_2G_2

                                         01

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

     1     0         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1612

                              00         TA_00 SK_2G_1

                                         00

現(xiàn)將新增的4塊硬盤通過(guò)udev映射為需要的設(shè)備文件，然后將其中2塊增加到ASM磁盤組DG_DATA中，另外2塊則新建一個(gè)ASM磁盤組DG_NEW_DATA。

[root@ora32 rules.d]# /sbin/scsi_id -g -s /block/sdb/sdb1

36000c2968513d97eb7cdd25bdbd10600

[root@ora32 rules.d]# /sbin/scsi_id -g -s /block/sdg/sdg1

36000c29682ba5ec7a4c8a189499a89bb

[root@ora32 rules.d]# /sbin/scsi_id -g -s /block/sdh/sdh2

36000c292aa4a4ebbb25d15d2084c01ca

[root@ora32 rules.d]# /sbin/scsi_id -g -s /blokc/sdi/sdi1

新增設(shè)備映射規(guī)則

[root@ora32 rules.d]# vi 99-oracle-asmdevices.rules

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29c9a269653c7cd04ea2edb0c71, NAME=ASM_DISK_2G_1, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29861258ebc95eded634a1f36fd, NAME=ASM_DISK_2G_2, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c296fd09d9ed213df1999820ca89, NAME=ASM_DISK_2G_3, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c2934ae12fd4af0dd366d85b42f5,  NAME=ASM_DISK_2G_4, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c2968513d97eb7cdd25bdbd10600,  NAME=ASM_DISK_1G_1, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29682ba5ec7a4c8a189499a89bb,  NAME=ASM_DISK_1G_2, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c292aa4a4ebbb25d15d2084c01ca,  NAME=ASM_DISK_1G_3, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29a98ca1bd8a0012e99f992a19d,  NAME=ASM_DISK_1G_4, WNER=grid, GROUP=asmadmin, MODE=0660

如果是第一次配置udev映射關(guān)系，需要如下操作。

1、  在目錄/etc/udev/rules.d/中新建99-oracle-asmdevices.rules文件。

2、配置SCSI 設(shè)備為可信任設(shè)備，配置/etc/scsi_id.config文件，添加options=-g配置項(xiàng)。

[root@ora32 rules.d]# cat /etc/scsi_id.config

#

# scsi_id configuration

#

# lower or upper case has no affect on the left side. Quotes () are

# required for spaces in values. Model is the same as the SCSI

# INQUIRY product identification field. Per the SCSI INQUIRY, the vendor

# is limited to 8 bytes, model to 16 bytes.

#

# The first matching line found is used. Short matches match longer ones,

# if you do not want such a match space fill the extra bytes. If no model

# is specified, only the vendor string need match.

#

# ptions=<any scsi_id command line options>

# vendor=string[,model=string],options=<per-device scsi_id options>

# some libata drives require vpd page 0x80

vendor=ATA,options=-p 0x80

options=-g

測(cè)試udev能否正確映射

[root@ora32 ~]# testudev /block/sdg/sdg1

-bash: testudev: command not found

[root@ora32 ~]# udevtest /block/sdb/sdb1

main: looking at device \\\’/block/sdb/sdb1\\\’ from subsystem \\\’block\\\’

udev_rules_get_name: add symlink \\\’disk/by-id/scsi-36000c2968513d97eb7cdd25bdbd10600-part1\\\’

udev_rules_get_name: add symlink \\\’disk/by-path/pci-0000:00:10.0-scsi-0:0:1:0-part1\\\’

run_program: \\\’/lib/udev/vol_id –export /dev/.tmp-8-17\\\’

run_program: \\\’/lib/udev/vol_id\\\’ returned with status 4

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

udev_rules_get_name: rule applied, \\\’sdb1\\\’ becomes \\\’ASM_DISK_1G_1\\\’

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c2968513d97eb7cdd25bdbd10600\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

udev_device_event: device \\\’/block/sdb/sdb1\\\’ already in database, validate currently present symlinks

udev_node_add: creating device node \\\’/dev/ASM_DISK_1G_1\\\’, major = \\\’8\\\’, minor = \\\’17\\\’, mode = \\\’0660\\\’, uid = \\\’503\\\’, gid = \\\’504\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-id/scsi-36000c2968513d97eb7cdd25bdbd10600-part1\\\’ to \\\’../../ASM_DISK_1G_1\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:1:0-part1\\\’ to \\\’../../ASM_DISK_1G_1\\\’

main: run: \\\’socket:/org/kernel/udev/monitor\\\’

main: run: \\\’/lib/udev/udev_run_devd\\\’

main: run: \\\’socket:/org/freedesktop/hal/udev_event\\\’

main: run: \\\’/sbin/pam_console_apply /dev/ASM_DISK_1G_1 /dev/disk/by-id/scsi-36000c2968513d97eb7cdd25bdbd10600-part1 /dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:1:0-part1\\\’

main: run: \\\’/bin/sh -c \\\’echo 180 >/sys/block/sdb/sdb1/timeout\\\’\\\’

[root@ora32 ~]# udevtest /block/sdg/sdg1

main: looking at device \\\’/block/sdg/sdg1\\\’ from subsystem \\\’block\\\’

udev_rules_get_name: add symlink \\\’disk/by-id/scsi-36000c29682ba5ec7a4c8a189499a89bb-part1\\\’

udev_rules_get_name: add symlink \\\’disk/by-path/pci-0000:00:10.0-scsi-0:0:6:0-part1\\\’

run_program: \\\’/lib/udev/vol_id –export /dev/.tmp-8-97\\\’

run_program: \\\’/lib/udev/vol_id\\\’ returned with status 4

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

udev_rules_get_name: rule applied, \\\’sdg1\\\’ becomes \\\’ASM_DISK_1G_2\\\’

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29682ba5ec7a4c8a189499a89bb\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

udev_device_event: device \\\’/block/sdg/sdg1\\\’ already in database, validate currently present symlinks

udev_node_add: creating device node \\\’/dev/ASM_DISK_1G_2\\\’, major = \\\’8\\\’, minor = \\\’97\\\’, mode = \\\’0660\\\’, uid = \\\’503\\\’, gid = \\\’504\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-id/scsi-36000c29682ba5ec7a4c8a189499a89bb-part1\\\’ to \\\’../../ASM_DISK_1G_2\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:6:0-part1\\\’ to \\\’../../ASM_DISK_1G_2\\\’

main: run: \\\’socket:/org/kernel/udev/monitor\\\’

main: run: \\\’/lib/udev/udev_run_devd\\\’

main: run: \\\’socket:/org/freedesktop/hal/udev_event\\\’

main: run: \\\’/sbin/pam_console_apply /dev/ASM_DISK_1G_2 /dev/disk/by-id/scsi-36000c29682ba5ec7a4c8a189499a89bb-part1 /dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:6:0-part1\\\’

main: run: \\\’/bin/sh -c \\\’echo 180 >/sys/block/sdg/sdg1/timeout\\\’\\\’

[root@ora32 ~]# udevtest /block/sdh/sdh2

main: looking at device \\\’/block/sdh/sdh2\\\’ from subsystem \\\’block\\\’

udev_rules_get_name: add symlink \\\’disk/by-id/scsi-36000c292aa4a4ebbb25d15d2084c01ca-part1\\\’

udev_rules_get_name: add symlink \\\’disk/by-path/pci-0000:00:10.0-scsi-0:0:8:0-part1\\\’

run_program: \\\’/lib/udev/vol_id –export /dev/.tmp-8-113\\\’

run_program: \\\’/lib/udev/vol_id\\\’ returned with status 4

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

udev_rules_get_name: rule applied, \\\’sdh2\\\’ becomes \\\’ASM_DISK_1G_3\\\’

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c292aa4a4ebbb25d15d2084c01ca\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

udev_device_event: device \\\’/block/sdh/sdh2\\\’ already in database, validate currently present symlinks

udev_node_add: creating device node \\\’/dev/ASM_DISK_1G_3\\\’, major = \\\’8\\\’, minor = \\\’113\\\’, mode = \\\’0660\\\’, uid = \\\’503\\\’, gid = \\\’504\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-id/scsi-36000c292aa4a4ebbb25d15d2084c01ca-part1\\\’ to \\\’../../ASM_DISK_1G_3\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:8:0-part1\\\’ to \\\’../../ASM_DISK_1G_3\\\’

main: run: \\\’socket:/org/kernel/udev/monitor\\\’

main: run: \\\’/lib/udev/udev_run_devd\\\’

main: run: \\\’socket:/org/freedesktop/hal/udev_event\\\’

main: run: \\\’/sbin/pam_console_apply /dev/ASM_DISK_1G_3 /dev/disk/by-id/scsi-36000c292aa4a4ebbb25d15d2084c01ca-part1 /dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:8:0-part1\\\’

main: run: \\\’/bin/sh -c \\\’echo 180 >/sys/block/sdh/sdh2/timeout\\\’\\\’

[root@ora32 ~]# udevtest /block/sdi/sdi1

main: looking at device \\\’/block/sdi/sdi1\\\’ from subsystem \\\’block\\\’

udev_rules_get_name: add symlink \\\’disk/by-id/scsi-36000c29a98ca1bd8a0012e99f992a19d-part1\\\’

udev_rules_get_name: add symlink \\\’disk/by-path/pci-0000:00:10.0-scsi-0:0:9:0-part1\\\’

run_program: \\\’/lib/udev/vol_id –export /dev/.tmp-8-129\\\’

run_program: \\\’/lib/udev/vol_id\\\’ returned with status 4

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

run_program: \\\’/sbin/scsi_id\\\’

run_program: \\\’/sbin/scsi_id\\\’ (stdout) \\\’36000c29a98ca1bd8a0012e99f992a19d\\\’

run_program: \\\’/sbin/scsi_id\\\’ returned with status 0

udev_rules_get_name: rule applied, \\\’sdi1\\\’ becomes \\\’ASM_DISK_1G_4\\\’

udev_device_event: device \\\’/block/sdi/sdi1\\\’ already in database, validate currently present symlinks

udev_node_add: creating device node \\\’/dev/ASM_DISK_1G_4\\\’, major = \\\’8\\\’, minor = \\\’129\\\’, mode = \\\’0660\\\’, uid = \\\’503\\\’, gid = \\\’504\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-id/scsi-36000c29a98ca1bd8a0012e99f992a19d-part1\\\’ to \\\’../../ASM_DISK_1G_4\\\’

udev_node_add: creating symlink \\\’/dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:9:0-part1\\\’ to \\\’../../ASM_DISK_1G_4\\\’

main: run: \\\’socket:/org/kernel/udev/monitor\\\’

main: run: \\\’/lib/udev/udev_run_devd\\\’

main: run: \\\’socket:/org/freedesktop/hal/udev_event\\\’

main: run: \\\’/sbin/pam_console_apply /dev/ASM_DISK_1G_4 /dev/disk/by-id/scsi-36000c29a98ca1bd8a0012e99f992a19d-part1 /dev/disk/by-path/pci-0000:00:10.0-scsi-0:0:9:0-part1\\\’

main: run: \\\’/bin/sh -c \\\’echo 180 >/sys/block/sdi/sdi1/timeout\\\’\\\’

重新啟動(dòng)udev服務(wù)

[root@ora32 ~]# /sbin/udevcontrol reload_rules

[root@ora32 ~]# /sbin/start_udev

Starting udev: [  OK  ]

查看一下新映射的磁盤

[root@ora32 ~]# ll /dev/ASM*

brw-rw—- 1 grid asmadmin 8,  17 May 13 15:40 /dev/ASM_DISK_1G_1

brw-rw—- 1 grid asmadmin 8,  97 May 13 15:40 /dev/ASM_DISK_1G_2

brw-rw—- 1 grid asmadmin 8, 113 May 13 15:40 /dev/ASM_DISK_1G_3

brw-rw—- 1 grid asmadmin 8, 129 May 13 15:40 /dev/ASM_DISK_1G_4

brw-rw—- 1 grid asmadmin 8,  33 May 13 15:43 /dev/ASM_DISK_2G_1

brw-rw—- 1 grid asmadmin 8,  49 May 13 15:43 /dev/ASM_DISK_2G_2

brw-rw—- 1 grid asmadmin 8,  65 May 13 15:42 /dev/ASM_DISK_2G_3

brw-rw—- 1 grid asmadmin 8,  81 May 13 15:43 /dev/ASM_DISK_2G_4

通過(guò)Oracle視圖查看一下ASM磁盤情況

[grid@ora32 ~]$ sqlplus / as sysasm

SQL*Plus: Release 11.2.0.1.0 Production on Mon May 13 15:42:05 2013

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 – 64bit Production

With the Automatic Storage Management option

SQL>

SQL> col group# for 99

SQL> col disk# for 99

SQL> col name for a5

SQL> col path for a11

SQL> col LABEL for a7

SQL> col FAILGROUP for a10

SQL> select GROUP_NUMBER group#,DISK_NUMBER disk#,LABEL,STATE,FAILGROUP,name,path,TOTAL_MB,FREE_MB from v$asm_disk;

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

     0     0         NORMAL                    /dev/ASM_DI          0          0

                                               SK_1G_3

     0     1         NORMAL                    /dev/ASM_DI          0          0

                                               SK_1G_2

     0     2         NORMAL                    /dev/ASM_DI          0          0

                                               SK_1G_1

     0     3         NORMAL                    /dev/ASM_DI          0          0

                                               SK_1G_4

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

     1     2         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1612

                              02         TA_00 SK_2G_3

                                         02

     1     3         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1611

                              03         TA_00 SK_2G_4

                                         03

     1     1         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1613

                              01         TA_00 SK_2G_2

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

                                         01

     1     0         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1612

                              00         TA_00 SK_2G_1

                                         00

8 rows selected.

此時(shí)發(fā)現(xiàn)新添加的4塊硬盤，已經(jīng)可以通過(guò)視圖進(jìn)行查詢，但是FAILGROUP、NAME等屬性為空，因?yàn)榇疟P還沒(méi)有加到ASM磁盤組。ASM是怎么認(rèn)到新增加的磁盤？其實(shí)它是根據(jù)參數(shù)文件中的屬性asm_diskstring自動(dòng)掃描到的，這個(gè)參數(shù)是在安裝GRID同時(shí)配置ASM時(shí)設(shè)置的。

SQL> show parameter ASM

NAME                                 TYPE        VALUE

———————————— ———– ——————————

asm_diskgroups                       string

asm_diskstring                       string      /dev/ASM*

asm_power_limit                      integer     1

asm_preferred_read_failure_groups    string

將磁盤ASM_DISK_1G_1、ASM_DISK_1G_2添加到磁盤組DG_DATA中。

SQL> ALTER DISKGROUP DG_DATA ADD disk \\\’/dev/ASM_DISK_1G_1\\\’;

Diskgroup altered.

SQL> ALTER DISKGROUP DG_DATA ADD disk \\\’/dev/ASM_DISK_1G_2\\\’;

Diskgroup altered.

新建磁盤組DG_NEW_DATA，將ASM_DISK_1G_3、ASM_DISK_1G_4添加到磁盤組中。

SQL> CREATE DISKGROUP DG_NEW_DATA external REDUNDANCY DISK \\\’/dev/ASM_DISK_1G_3\\\’,\\\’/dev/ASM_DISK_1G_4\\\’;

Diskgroup created.

通過(guò)Oracle 視圖查看一下新增ASM磁盤組、ASM磁盤的情況

SQL> col name for a10

SQL> SELECT group_number,name,type,state,total_mb,free_mb,offline_disks FROM V$ASM_diskgroup;

GROUP_NUMBER NAME       TYPE   STATE         TOTAL_MB    FREE_MB OFFLINE_DISKS

———— ———- —— ———– ———- ———- ————-

           1 DG_DATA    EXTERN MOUNTED          10226       8482             0

           2 DG_NEW_DAT EXTERN MOUNTED           2038       1986             0

             A

SQL> select GROUP_NUMBER group#,DISK_NUMBER disk#,LABEL,STATE,FAILGROUP,name,path,TOTAL_MB,FREE_MB from v$asm_disk;

    GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB

———- —– ——- ——– ———- —– ———– ———-

   FREE_MB

———-

         1     2         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047

                                  02         TA_00 SK_2G_3

                                             02

      1697

         1     3         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047

                                  03         TA_00 SK_2G_4

                                             03

      1697

    GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB

———- —– ——- ——– ———- —– ———– ———-

   FREE_MB

———-

         1     1         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047

                                  01         TA_00 SK_2G_2

                                             01

      1699

         1     0         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047

                                  00         TA_00 SK_2G_1

                                             00

    GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB

———- —– ——- ——– ———- —– ———– ———-

   FREE_MB

———-

      1697

         2     0         NORMAL   DG_NEW_DAT DG_NE /dev/ASM_DI       1019

                                  A_0000     W_DAT SK_1G_3

                                             A_000

                                             0

       994

         1     5         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       1019

    GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB

———- —– ——- ——– ———- —– ———– ———-

   FREE_MB

———-

                                  05         TA_00 SK_1G_2

                                             05

       846

         1     4         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       1019

                                  04         TA_00 SK_1G_1

                                             04

       846

    GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB

———- —– ——- ——– ———- —– ———– ———-

   FREE_MB

———-

         2     1         NORMAL   DG_NEW_DAT DG_NE /dev/ASM_DI       1019

                                  A_0001     W_DAT SK_1G_4

                                             A_000

                                             1

       992

8 rows selected.

根據(jù)實(shí)驗(yàn)要求4塊硬盤添加完畢，接下來(lái)將硬盤ASM_DISK_1G_1、ASM_DISK_1G_2從ASM磁盤組DG_DATA中刪除，然后將udev映射規(guī)則刪除。

SQL> ALTER DISKGROUP DG_DATA DROP DISK DG_DATA_0004;

Diskgroup altered.

SQL> ALTER DISKGROUP DG_DATA DROP DISK DG_DATA_0005;

Diskgroup altered.

SQL> col group# for 99

SQL> col disk# for 99

SQL> col name for a5

SQL> col path for a11

SQL> col LABEL for a7

SQL> col FAILGROUP for a10

SQL> select GROUP_NUMBER group#,DISK_NUMBER disk#,LABEL,STATE,FAILGROUP,name,path,TOTAL_MB,FREE_MB from v$asm_disk;

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

     0     0         NORMAL                    /dev/ASM_DI          0          0

                                               SK_1G_2

     0     1         NORMAL                    /dev/ASM_DI          0          0

                                               SK_1G_1

     1     2         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1612

                              02         TA_00 SK_2G_3

                                         02

     1     3         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1611

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

                              03         TA_00 SK_2G_4

                                         03

     1     1         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1614

                              01         TA_00 SK_2G_2

                                         01

     1     0         NORMAL   DG_DATA_00 DG_DA /dev/ASM_DI       2047       1611

                              00         TA_00 SK_2G_1

                                         00

GROUP# DISK# LABEL   STATE    FAILGROUP  NAME  PATH          TOTAL_MB    FREE_MB

—— —– ——- ——– ———- —– ———– ———- ———-

     2     0         NORMAL   DG_NEW_DAT DG_NE /dev/ASM_DI       1019        994

                              A_0000     W_DAT SK_1G_3

                                         A_000

                                         0

     2     1         NORMAL   DG_NEW_DAT DG_NE /dev/ASM_DI       1019        992

                              A_0001     W_DAT SK_1G_4

                                         A_000

                                         1

8 rows selected.

[root@ora32 ~]# vi /etc/udev/rules.d/99-oracle-asmdevices.rules

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29c9a269653c7cd04ea2edb0c71, NAME=ASM_DISK_2G_1, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29861258ebc95eded634a1f36fd, NAME=ASM_DISK_2G_2, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c296fd09d9ed213df1999820ca89, NAME=ASM_DISK_2G_3, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c2934ae12fd4af0dd366d85b42f5,  NAME=ASM_DISK_2G_4, WNER=grid, GROUP=asmadmin, MODE=0660

#KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

#RESULT==36000c2968513d97eb7cdd25bdbd10600,  NAME=ASM_DISK_1G_1, WNER=grid, GROUP=asmadmin, MODE=0660

#KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

#RESULT==36000c29682ba5ec7a4c8a189499a89bb,  NAME=ASM_DISK_1G_2, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c292aa4a4ebbb25d15d2084c01ca,  NAME=ASM_DISK_1G_3, WNER=grid, GROUP=asmadmin, MODE=0660

KERNEL==sd?1, BUS==scsi, PROGRAM==/sbin/scsi_id,

RESULT==36000c29a98ca1bd8a0012e99f992a19d,  NAME=ASM_DISK_1G_4, WNER=grid, GROUP=asmadmin, MODE=0660

重新啟動(dòng)udev

[root@ora32 dev]# /sbin/udevcontrol reload_rules

[root@ora32 dev]# /sbin/start_udev

Starting udev: [  OK  ]

查看一下dev下的設(shè)備，發(fā)現(xiàn)仍然存在/dev/ASM_DISK_1G_1，/dev/ASM_DISK_1G_2

[root@ora32 dev]# ll /dev/ASM*

brw-rw—- 1 grid asmadmin 8,  17 May 13 16:15 /dev/ASM_DISK_1G_1

brw-rw—- 1 grid asmadmin 8,  97 May 13 16:15 /dev/ASM_DISK_1G_2

brw-rw—- 1 grid asmadmin 8, 113 May 13 16:38 /dev/ASM_DISK_1G_3

brw-rw—- 1 grid asmadmin 8, 129 May 13 16:37 /dev/ASM_DISK_1G_4

brw-rw—- 1 grid asmadmin 8,  33 May 13 16:38 /dev/ASM_DISK_2G_1

brw-rw—- 1 grid asmadmin 8,  49 May 13 16:38 /dev/ASM_DISK_2G_2

brw-rw—- 1 grid asmadmin 8,  65 May 13 16:38 /dev/ASM_DISK_2G_3

brw-rw—- 1 grid asmadmin 8,  81 May 13 16:37 /dev/ASM_DISK_2G_4

不知道是何原因。將數(shù)據(jù)庫(kù)實(shí)例和ASM實(shí)例都停掉后，重新啟動(dòng)udev服務(wù)后發(fā)現(xiàn)dev下仍然存在/dev/ASM_DISK_1G_1，/dev/ASM_DISK_1G_2，通過(guò)udevinfo查詢發(fā)現(xiàn)已經(jīng)在udev不存在記錄。

[root@ora32 dev]# udevinfo -q path -n /dev/ASM_DISK_1G_1

no record for \\\’ASM_DISK_1G_1\\\’ in database

[root@ora32 dev]# udevinfo -q path -n /dev/ASM_DISK_1G_2

no record for \\\’ASM_DISK_1G_2\\\’ in database

[root@ora32 dev]#

[root@ora32 dev]# udevinfo -q path -n /dev/ASM_DISK_1G_3

/block/sdh/sdh2

在網(wǎng)上查閱了資料，并未找到解決/dev/ASM_DISK_1G_1，/dev/ASM_DISK_1G_2為什么仍然存在的原因，繼續(xù)跟蹤這個(gè)問(wèn)題。

更多關(guān)于云服務(wù)器，域名注冊(cè)，虛擬主機(jī)的問(wèn)題，請(qǐng)?jiān)L問(wèn)西部數(shù)碼官網(wǎng)：ps-sw.cn

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