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Veritas Access 故障排除指南

Last Published: 2018-05-28

Product(s): Access (7.4)

Platform: Linux

更换磁盘

在某些情况下，您可能需要更换现有磁盘。本节介绍更换磁盘的步骤。

更换磁盘

从阵列端删除需要更换的磁盘。
从阵列端将新磁盘添加到系统中。
在群集中的所有节点上运行以下命令，以从 Veritas Volume Manager (VxVM) 视图中清除旧磁盘。
```
#vxdisk rm <old-disk-name>
```
在要为其更换磁盘的节点上运行以下命令。
```
# vxdisk scandisks
```
使用 vxdisksetup 命令初始化已添加到群集中的新磁盘。
```
#/etc/vx/bin/vxdisksetup –fi <new-disk-name>
```
在发生故障的磁盘所在的节点上，对新添加的设备应用类似于 Veritas Access 池名称的标记。
```
# vxdisk settag site=<pool-name> <new-disk-name>
```
在发生故障的磁盘所在的节点上，运行 vxdiskadm 命令并选择 option #5，以将发生故障的磁盘更换为新磁盘。
```
#vxdiskadm
```
注意:
如果从下级节点触发磁盘更换操作，vxrecover 命令将失败。
如果从下级节点触发磁盘更换操作，请从从属节点对受影响的所有卷运行以下命令。
```
#vxrecover –b –c –s <vol-name>
```

将新添加的磁盘重命名为磁盘访问名称。

#vxedit –g <dg-name> rename <old-disk-name> <new-disk-name>

根据新添加的磁盘名称重命名子磁盘。

#vxedit –g <dg-name> rename <old-subdisk-name> <new-subdisk-name>

示例：从主节点更换磁盘

此示例介绍将 emc0_2255 磁盘更换为 emc0_2263 磁盘的过程。已排除 emc0_2263 磁盘，以后将添加该磁盘以模拟磁盘添加操作。

从主节点更换磁盘

运行 vxdmpadm exclude 命令，以删除 emc0_2255 磁盘。
```
# vxdmpadm exclude dmpnodename=emc0_2255
```
运行 vxdmpadm include 命令，以包括 emc0_2263 磁盘。
```
# vxdmpadm include dmpnodename=emc0_2263
```
注意:
您可以运行 vxdisk scandisks 命令以扫描磁盘。
运行 settag 命令，以将标记应用于基础磁盘。
```
# vxdisk settag emc0_2263 tag=pool1
```

运行 vxdiskadm 命令并选择 option #5，以更换发生故障的磁盘。

[root@fss7310_01 ~]# vxdiskadm
Volume Manager Support Operations
Menu:: VolumeManager/Disk
1 Add or initialize one or more disks
2 Encapsulate one or more disks
3 Remove a disk
4 Remove a disk for replacement 5 Replace a failed or removed disk
6 Mirror volumes on a disk
7 Move volumes from a disk
8 Enable access to (import) a disk group
9 Remove access to (deport) a disk group
10 Enable (online) a disk device
11 Disable (offline) a disk device
12 Mark a disk as a spare for a disk group
13 Turn off the spare flag on a disk
14 Unrelocate subdisks back to a disk
15 Exclude a disk from hot-relocation use
16 Make a disk available for hot-relocation use
17 Prevent multipathing/Suppress devices from VxVM's view
18 Allow multipathing/Unsuppress devices from VxVM's view
19 List currently suppressed/non-multipathed devices
20 Change the disk naming scheme
21 Change/Display the default disk layouts
22 Dynamic Reconfiguration Operations
list List disk information

Select an operation to perform: 5

Replace a failed or removed disk
Menu:: VolumeManager/Disk/ReplaceDisk

Use this menu operation to specify a replacement disk for a disk
that you removed with the "Remove a disk for replacement" menu
operation, or that failed during use. You will be prompted for
a disk name to replace and a disk device to use as a replacement.
You can choose an uninitialized disk, in which case the disk will
be initialized, or you can choose a disk that you have already
initialized using the Add or initialize a disk menu operation.

Select a removed or failed disk [<disk>,list,q,?] list
Disk group: sfsdg
DM NAME DEVICE TYPE PRIVLEN PUBLEN STATE
dm emc0_2255 - - - - NODEVICE

Select a removed or failed disk [<disk>,list,q,?] emc0_2255

The following devices are available as replacements:
emc0_2263
You can choose one of these devices to replace emc0_2255. 
Choose "none" to initialize another device to replace emc0_2255.
Choose a device, or select "none" [<device>,none,q,?] 
(default: emc0_2263) emc0_2263
VxVM INFO V-5-2-382
The requested operation is to use the initialized device emc0_2263
to replace the removed or failed disk emc0_2255 in disk group sfsdg.
Continue with operation? [y,n,q,?] (default: y) y
Use FMR for plex resync? [y,n,q,?] (default: n)
VxVM INFO V-5-2-282 Replacement of disk emc0_2255 in group 
sfsdg with disk device emc0_2263 completed successfully.
Replace another disk? [y,n,q,?] (default: n)

根据磁盘访问名称重命名磁盘，以避免出现 vxdg 问题。

# vxedit -g sfsdg rename emc0_2255 emc0_2263

# vxdisk list | grep emc0_2263 emc0_2263 auto:cdsdisk emc0_2263 
sfsdg online shared

根据磁盘访问名称重命名子磁盘。

# vxedit -g sfsdg rename emc0_2255-03 emc0_2263-03
# vxedit -g sfsdg rename emc0_2255-02 emc0_2263-02

[root@fss7310_01 ~]# vxprint -pvs | grep -i 2263
sd emc0_2263-02 vol1-P01 ENABLED 699136 0 - - -
sd emc0_2263-03 vol1_dcl-01 ENABLED 67840 0 - - -
[root@fss7310_01 ~]# vxprint -pvs | grep -i 2255
[root@fss7310_01 ~]#

示例：从下级节点更换磁盘

此示例介绍将 emc0_2273 磁盘更换为 emc0_2305 磁盘的过程。已排除 emc0_2263 磁盘，以后将添加该磁盘以模拟磁盘添加操作。

从下级节点更换磁盘

运行 vxdmpadm exclude 命令，以删除 emc0_2273 磁盘。
```
# vxdmpadm exclude dmpnodename=emc0_2273
```
运行 vxdmpadm include 命令，以包括 emc0_2305 磁盘。
```
# vxdmpadm include dmpnodename=emc0_2305
```
注意:
您可以运行 vxdisk scandisks 命令以扫描磁盘。

从群集中的其余节点运行 vxdisk rm 命令：

[root@fss7310_02 ~]# vxdisk rm emc0_2273
[root@fss7310_01 ~]# vxdisk rm emc0_2273

运行 settag 命令，以将标记应用于基础磁盘：
```
# vxdisk settag emc0_2305 tag=pool1
```

运行 vxdiskadm 命令并选择 option #5，以更换发生故障的磁盘。

[root@fss7310_01 ~]# vxdiskadm

Volume Manager Support Operations
Menu:: VolumeManager/Disk

1 Add or initialize one or more disks
2 Encapsulate one or more disks
3 Remove a disk
4 Remove a disk for replacement 5 Replace a failed or removed disk
6 Mirror volumes on a disk
7 Move volumes from a disk
8 Enable access to (import) a disk group
9 Remove access to (deport) a disk group
10 Enable (online) a disk device
11 Disable (offline) a disk device
12 Mark a disk as a spare for a disk group
13 Turn off the spare flag on a disk
14 Unrelocate subdisks back to a disk
15 Exclude a disk from hot-relocation use
16 Make a disk available for hot-relocation use
17 Prevent multipathing/Suppress devices from VxVM's view
18 Allow multipathing/Unsuppress devices from VxVM's view
19 List currently suppressed/non-multipathed devices
20 Change the disk naming scheme
21 Change/Display the default disk layouts
22 Dynamic Reconfiguration Operations
list List disk information

? Display help about menu
?? Display help about the menuing system
q Exit from menus

Select an operation to perform: 5
Replace a failed or removed disk

Menu:: VolumeManager/Disk/ReplaceDisk
Use this menu operation to specify a replacement disk for a disk
that you removed with the "Remove a disk for replacement" menu
operation, or that failed during use. You will be prompted for
a disk name to replace and a disk device to use as a replacement.
You can choose an uninitialized disk, in which case the disk will
be initialized, or you can choose a disk that you have already
initialized using the Add or initialize a disk menu operation.
Select a removed or failed disk [<disk>,list,q,?] list
Disk group: sfsdg

DM NAME      DEVICE TYPE PRIVLEN PUBLEN STATE
dm emc0_2273 -      -    -       -      NODEVICE

Select a removed or failed disk [<disk>,list,q,?] emc0_2273
The following devices are available as replacements:
emc0_2305
You can choose one of these devices to replace emc0_2255. Choose 
"none" to initialize another device to replace emc0_2255.
Choose a device, or select "none" [<device>,none,q,?] 
(default: emc0_2305) emc0_2305
VxVM INFO V-5-2-382
The requested operation is to use the initialized device emc0_2305
to replace the removed or failed disk emc0_2273 in disk group sfsdg.

Continue with operation? [y,n,q,?] (default: y)
Use FMR for plex resync? [y,n,q,?] (default: n) VxVM vxrecover 
ERROR V-5-1-16084 Disk group: sfsdg is shared. The command can be 
executed only on the master. Use -c option to recover all the shared 
disk groups from slaves.
VxVM INFO V-5-2-282 Replacement of disk emc0_2273 in group sfsdg 
with disk device emc0_2305 completed successfully.
Replace another disk? [y,n,q,?] (default: n)

运行以下命令可恢复受影响的卷。
```
# vxrecover -b -c -s vol1
```

将磁盘重命名为磁盘访问名称，以避免出现 vxdg 问题。

# vxedit -g sfsdg rename emc0_2273 emc0_2305

# vxdisk list | grep emc0_2305
emc0_2305 auto:cdsdisk emc0_2305 sfsdg online shared

根据新添加的磁盘遵循的命名约定来重命名子磁盘。

# vxedit -g sfsdg rename emc0_2273-02 emc0_2305-02
# vxedit -g sfsdg rename emc0_2273-03 emc0_2305-03

# vxprint -pvs | grep -i emc0_2305
sd emc0_2305-02 vol1-P02 ENABLED 699136 0 - - -
sd emc0_2305-03 vol1_dcl-02 ENABLED 67840 0 - - -
# vxprint -pvs | grep -i emc0_2273