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225 lines
7.3 KiB
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[#]: subject: "How to Extend Veritas File System (VxFS) in Linux"
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[#]: via: "https://www.2daygeek.com/extend-increase-vxvm-volume-vxfs-filesystem-linux/"
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[#]: author: "Jayabal Thiyagarajan https://www.2daygeek.com/author/jayabal/"
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[#]: collector: "lujun9972"
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[#]: translator: " "
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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How to Extend Veritas File System (VxFS) in Linux
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======
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Extending the VxFX file system is a routine task for a Linux/Unix administrator and this can be done online with a few steps described in the below article:
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In this scenario, the Disk Group doesn’t have sufficient free space, so we will be adding a new disk in the existing Disk Group (DG) and then resizing it.
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**Related Articles:**
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* **[How to Create VxVM Volume and Filesystem in Linux][1]**
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* **[How to Create Shared VxFS FileSystem on Linux][2]**
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### Step-1: Identifying Filesystem
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Check the Filesystem to be increased/extended using the **[df command][3]** and note down the Disk Group (DG) and Volume name from the below output, which will be used later while running vxdg and vxresize commands.
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```
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df -hP /data
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Filesystem Size Used Avail Use% Mounted on
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/dev/vx/dsk/testdg/testvol 9.0G 8.4G 0.6G 95% /data
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```
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As per the above output, the VxFS filesystem size is **‘9.0 GB’** and we would like to extend additionally **‘5 GB’** and post this activity the VxFS size would be **`'14 GB'`**.
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In this case, the DG name is **‘testdg’** and Volume name is **‘testvol’**.
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### Step-2: Getting a new Disk/LUN
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The new disk must be mapped to the host by the storage team, which may require CR approval, so raise the CR and add the necessary task to the relevant teams, and also include a Rollout/Rollback plan for this activity.
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### Step-3: Scanning a Disk/LUN
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Once Storage team mapped the new LUN to the host, obtain the LUN id and keep it handy.
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Scan the LUN using the below command to discover them at OS level.
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```
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for disk_scan in `ls /sys/class/scsi_host`; do echo "Scanning $disk_scan…Completed"; echo "- - -" > /sys/class/scsi_host/$disk_scan/scan; done
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Scanning host0...Completed
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Scanning host1...Completed
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.
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.
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Scanning host[N]...Completed
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```
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Once the scanning is complete, use the below command to find out if the given LUN is found at the OS level.
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```
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lsscsi --scsi | grep -i [Last_Five_Digit_of_LUN]
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```
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### Step-4: Finding Disks in VxVM
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By default, all available disks are visible to Veritas Volume Manager (VxVM), which can be listed by using the **vxdisk** command as shown below.
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```
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vxdisk -e list
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DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
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emc_01 auto:cdsdisk disk1 testdg online sdd -
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emc_02 auto:cdsdisk disk2 testdg online sde -
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emc_03 auto:none - - online invalid sdf -
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sda auto:LVM - - LVM sda -
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sdb auto:LVM - - LVM sdb -
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```
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The disk **`'sdf'`** STATUS shows as **`"Online invalid"`** indicates that this disk is not under VxVM control. However, use **smartctl** command to double check the LUN id to ensure that you are picking the correct disk.
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```
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smartctl -a /dev/sd[x]|grep -i unit
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```
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If the disk is not populated to VxVM, execute the below command to scan the disk devices in the operating system device tree.
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```
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vxdisk scandisks
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```
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### Step-5: Initializing Disk in VxVM
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Once the disk is visible to VxVM at **step #4** , then initialize the disk using the **vxdisksetup** command as shown below:
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```
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vxdisksetup -i sdf
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```
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The above command brings the disk **‘sdf’** to the Veritas Volume Manager (VxVM) and the disk status changed to **`"online"`** now.
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![][4]
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### Step-6: Adding Disk to Disk Group (DG) in VxVM
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The **vxdg** command performs various administrative operations on disk groups. In this example, we will be using it for adding a new disk to the existing Disk Group (DG).
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```
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Syntax:
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vxdg -g [DG_Name] adddisk [Any_Name_to_Disk_as_per_Your_Wish=Device_Name]
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```
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```
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vxdg -g testdg adddisk disk3=emc_03
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```
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After ran the above command, **DISK** name is **`'disk3'`** and **GROUP** name is **`'testdg'`** were updated for **’emc_03′** device as shown below:
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```
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vxdisk -e list
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DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
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emc_01 auto:cdsdisk disk1 testdg online sdd -
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emc_02 auto:cdsdisk disk2 testdg online sde -
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emc_03 auto:none disk3 testdg online sdf -
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sda auto:LVM - - LVM sda -
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sdb auto:LVM - - LVM sdb -
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```
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### Step-7: Checking free space in the Disk Group (DG)
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To determine how much free space is available for a concatenated volume, run:
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```
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vxassist -g testdg maxsize
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```
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### Step-8: Extending VxVM Volume and VxFS Filesystem
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We have added **‘5GB’** LUN for this activity, so extending the VxVM volume and VxFS filesystem additionally **`'5GB'`** as shown below:
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```
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Syntax:
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vxresize -b -g [DG_Name] [Volume_Name] +[Size_to_be_Increased]
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```
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```
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vxresize -b -g testdg testvol +5g
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```
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* **Where:**
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* vxresize : Command
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* -b : Perform the resize operation in the background (optional).
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* -g : Limits operation of the command to the given disk group, as specified by disk group ID or disk group name.
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* testdg : Our DiskGroup (DG) Name
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* testvol : Our Volume Name
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* +5g : This volume will be increased additionaly 5GB.
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### Step-9: Checking Extended VxFS Filesystem
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Finally, check the extended VxFS of **‘/data’** using the df command:
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```
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df -hP /data
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Filesystem Size Used Avail Use% Mounted on
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/dev/vx/dsk/testdg/testvol 14G 8.4G 5.6G 68% /data
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```
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##### Conclusion
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In this tutorial, we’ve shown you how to add a new disk to the existing Disk Group (DG), and extend VxVM Volume and VxFS Filesystem in Linux with few easy steps.
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If you have any questions or feedback, feel free to comment below.
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Kindly support us by sharing this article with wider circle.
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--------------------------------------------------------------------------------
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via: https://www.2daygeek.com/extend-increase-vxvm-volume-vxfs-filesystem-linux/
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作者：[Jayabal Thiyagarajan][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.2daygeek.com/author/jayabal/
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[b]: https://github.com/lujun9972
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[1]: https://www.2daygeek.com/create-vxvm-volume-vxfs-filesystem-linux/
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[2]: https://www.2daygeek.com/create-veritas-shared-vxfs-file-system-linux/
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[3]: https://www.2daygeek.com/linux-check-disk-space-usage-df-command/
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[4]: https://www.2daygeek.com/wp-content/uploads/2023/07/extend-increase-vxvm-volume-vxfs-filesystem-linux-1024x201.jpg
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