Azure Managed Disk操作

Azure Managed Disk对原有的Page Blob进行了一次封装。使得Azure VM的Disk操作变得非常简单。本文将介绍实际操作中针对Manage Disk的一些操作。

一、创建Manage Disk

Manage Disk的创建，可以创建空磁盘，也可以从其他源创建Disk。

1 创建空磁盘

root@hw-surfacebook:~# az disk create -g hwtest -n hwempty01 --size-gb  --sku Standard_LRS
{\ Finished ..
  "accountType": "Standard_LRS",
  "creationData": {
    "createOption": "Empty",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": null,
    "storageAccountId": null
  },
  "diskSizeGb": ,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/hwempty01",
  "location": "chinanorth",
  "name": "hwempty01",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwtest",
  "tags": {},
  "timeCreated": "2017-07-12T09:39:57.982040+00:00",
  "type": "Microsoft.Compute/disks"
}

2 从其他源创建磁盘

可以通过存储账户中Page Blob创建Disk：

root@hw-surfacebook:~# az disk create -g hwfdsk -n hwmd01 --source https://h2portalvhdsn6t2ktgjscst.blob.core.chinacloudapi.cn/vhds/hwfdsk-hwfdsk-2017-06-23.vhd
{/ Finished ..
  "accountType": "Premium_LRS",
  "creationData": {
    "createOption": "Import",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": "https://h2portalvhdsn6t2ktgjscst.blob.core.chinacloudapi.cn/vhds/hwfdsk-hwfdsk-2017-06-23.vhd",
    "storageAccountId": null
  },
  "diskSizeGb": null,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwfdsk/providers/Microsoft.Compute/disks/hwmd01",
  "location": "chinanorth",
  "name": "hwmd01",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwfdsk",
  "tags": {},
  "timeCreated": "2017-06-23T14:52:46.629909+00:00",
  "type": "Microsoft.Compute/disks"
}

二 复制Disk

Managed Disk的复制就是用Create的命令来实现的：

root@hw-surfacebook:~# az disk create -g hwtest -n mydisk03 --source mydisk02
{\ Finished ..
  "accountType": "Premium_LRS",
  "creationData": {
    "createOption": "Copy",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk02",
    "storageAccountId": null
  },
  "diskSizeGb": ,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk03",
  "location": "chinanorth",
  "name": "mydisk03",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwtest",
  "tags": {},
  "timeCreated": "2017-07-12T09:48:33.620377+00:00",
  "type": "Microsoft.Compute/disks"
}

命令是把mydisk02复制到mydisk03。一般情况下，不指定managed disk的sku，都是Premium_LRS的。

3 跨Resource Group创建managed Disk：

root@hw-surfacebook:~# az disk create -g hwtest -n mydisk04 --source /subscriptions/xxxx/resourceGroups/HWFDSK/providers/Microsoft.Compute/disks/hwmd01
{/ Finished ..
  "accountType": "Premium_LRS",
  "creationData": {
    "createOption": "Copy",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": "/subscriptions/xxxx/resourceGroups/HWFDSK/providers/Microsoft.Compute/disks/hwmd01",
    "storageAccountId": null
  },
  "diskSizeGb": ,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk04",
  "location": "chinanorth",
  "name": "mydisk04",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwtest",
  "tags": {},
  "timeCreated": "2017-07-12T10:01:17.520376+00:00",
  "type": "Microsoft.Compute/disks"
}

三 下载Managed Disk

如果想把Managed Disk下载下来，需要通过开放managed Disk的SAS访问权限。具体命令如下：

root@hw-surfacebook:~# az disk grant-access -g hwtest -n mydisk03 --duration-in-seconds
{/ Finished ..
  "accessSas": "https://md-xplvtgf1jcgg.blob.core.chinacloudapi.cn/ttq410wsfkk5/abcd?sv=2016-05-31&sr=b&si=31fc2e57-dcd6-4cf1-ba2a-33fb44d560a4&sig=j2JwhG8Gx51sVwOdm%2BNIPEOfTAWiZsoW82XpEjTcAHA%3D"
}
这种情况下，已经Attach到VM的Disk是不能开机的。如果开放了SAS的访问权限，又需要开机，需要把这个权限取消掉。具体命令如下：
root@hw-surfacebook:~# az disk revoke-access -g hwtest -n mydisk03
{/ Finished ..
  "endTime": "2017-07-12T09:56:37.555156+00:00",
  "error": null,
  "name": "acdf95b5-d658-4a17-b680-31f48c8b8927",
  "startTime": "2017-07-12T09:56:37.336370+00:00",
  "status": "Succeeded"
}

四 更改managed Disk的sku

前面提到过，managed disk在不指定sku的情况下，默认都是SSD的。如果需要转换成HDD的Disk，命令如下：

root@hw-surfacebook:~# az disk update -g hwtest -n mydisk03 --sku Standard_LRS
{
  "accountType": "Standard_LRS",
  "creationData": {
    "createOption": "Copy",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk02",
    "storageAccountId": null
  },
  "diskSizeGb": ,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk03",
  "location": "chinanorth",
  "name": "mydisk03",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwtest",
  "tags": {},
  "timeCreated": "2017-07-12T09:48:33.620377+00:00",
  "type": "Microsoft.Compute/disks"
}

或者在创建的时候就指定SKU：

root@hw-surfacebook:~# az disk create -g hwtest -n mydisk05 --source mydisk04 --sku Standard_LRS
{/ Finished ..
  "accountType": "Standard_LRS",
  "creationData": {
    "createOption": "Copy",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk04",
    "storageAccountId": null
  },
  "diskSizeGb": ,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk05",
  "location": "chinanorth",
  "name": "mydisk05",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwtest",
  "tags": {},
  "timeCreated": "2017-07-12T10:03:20.170081+00:00",
  "type": "Microsoft.Compute/disks"
}

五 对managed disk做snapshot

root@hw-surfacebook:~# az snapshot create -g hwtest -n hwsnapshot01 --source mydisk01
{/ Finished ..
  "accountType": "Standard_LRS",
  "creationData": {
    "createOption": "Copy",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk01",
    "storageAccountId": null
  },
  "diskSizeGb": ,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/snapshots/hwsnapshot01",
  "location": "chinanorth",
  "name": "hwsnapshot01",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwtest",
  "tags": {},
  "timeCreated": "2017-07-13T05:31:54.692171+00:00",
  "type": "Microsoft.Compute/snapshots"
}

从Snapshot创建Disk：

root@hw-surfacebook:~# az disk create -g hwtest -n mydisk06 --source hwsnapshot01
{- Finished ..
  "accountType": "Premium_LRS",
  "creationData": {
    "createOption": "Copy",
    "imageReference": null,
    "sourceResourceId": null,
    "sourceUri": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/snapshots/hwsnapshot01",
    "storageAccountId": null
  },
  "diskSizeGb": ,
  "encryptionSettings": null,
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/disks/mydisk06",
  "location": "chinanorth",
  "name": "mydisk06",
  "osType": null,
  "ownerId": null,
  "provisioningState": "Succeeded",
  "resourceGroup": "hwtest",
  "tags": {},
  "timeCreated": "2017-07-13T05:33:57.468651+00:00",
  "type": "Microsoft.Compute/disks"
}

五 用已有的managed disk创建VM

有了managed disk，创建VM就非常简单了，用Azure Cli创建的命令如下：

root@hw-surfacebook:~# az vm create -g hwtest -n hwtest06 --attach-os-disk mydisk06 --vnet-name hwtest --subnet Subnet- --os-type Linux
{- Finished ..
  "fqdns": "",
  "id": "/subscriptions/xxxx/resourceGroups/hwtest/providers/Microsoft.Compute/virtualMachines/hwtest06",
  "location": "chinanorth",
  "macAddress": "00-17-FA-00-C7-FA",
  "powerState": "VM running",
  "privateIpAddress": "10.3.0.5",
  "publicIpAddress": "139.219.104.221",
  "resourceGroup": "hwtest"
}

总结：

有了managed Disk，很多针对VM Disk的操作变得简单很多。