- Controlling Client Access
- Mounting and Unmounting an Xsan Volume
- Moving a Client to a Different SAN
- Controlling User Access
- Using POSIX and ACLs
- Managing Home Folders
- Setting SAN User and Group Quotas
- Understanding Xsan Quotas
- Combining Xsan Controllers and StorNext Clients
- What Youve Learned
- References
- Review Questions
This chapter is from the book
This chapter is from the book
This chapter is from the book
Mounting and Unmounting an Xsan Volume
Volumes are automatically mounted on SAN computers when you create them. However, if you explicitly unmount a volume from a client, you need to mount it again to restore access.
Xsan volumes are mounted on clients using Xsan Admin or in the command line using the xsanctl tool. When an Xsan volume is mounted, you can mount the volume with read-only privileges or with read/write privileges. It is most common to mount a volume on a client in read/write mode because the workstation user will probably need to write changes to the volume. When an Xsan volume is mounted on a computer in read-only mode, no user logged in to that computer can write data to the volume.
Mounting an Xsan Volume with Xsan Admin
To mount an Xsan volume on a client workstation, follow these steps:
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- In Xsan Admin, in the SAN Assets list, choose Mounts.
- Choose the client in the list.
- From the Volume pop-up menu, choose the volume.
- To allow the client to modify volume files, click the Mount Read & Write button or, from the Action (gear) pop-up menu, choose Mount Read & Write.
- To prevent the client from modifying the volume, choose Mount Read Only from the Action (gear) pop-up menu.
A volume remains mounted until you unmount it or until the client computer user unmounts it. A volume remains mounted even if the user logs out or the client computer is restarted.
Unmounting an Xsan Volume with Xsan Admin
To deny client access to a volume, you can unmount the volume from the client. Clients can’t mount SAN volumes; only an administrator can mount a SAN volume on a client.
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To unmount a volume using Xsan Admin, follow these steps:
- In Xsan Admin, in the SAN Assets list, choose Mounts.
- From the Volume pop-up menu, choose the volume.
- Select the client in the list and click the Unmount button.
Mounting an Xsan Volume Using the Command Line
If you do not have access to Xsan Admin and need to mount a volume on a client workstation, you can do so from the command line with the xsanctl tool. To mount an Xsan volume using the command line, follow these steps:
- Open Terminal at the client computer, or log in to the computer remotely using the following SSH command:
$ ssh user@computer
In this command, user is a user account on the remote computer, and computer is its IP address or DNS name.
- Mount the volume using this SSH command:
$ sudo xsanctl mount volume
Unmounting an Xsan Volume Using the Command Line
To unmount an Xsan volume using the command line, follow these steps:
- Open Terminal at the client computer and log in to the computer remotely using the following SSH command:
$ ssh user@computer
- Unmount the volume using the following SSH command:
$ sudo xsanctl unmount volume