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105 lines
3.6 KiB
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[#]: subject: "How to map SAN LUN, Disk and FileSystem in Linux"
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[#]: via: "https://www.2daygeek.com/map-san-lun-physical-disk-filesystem-linux/"
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[#]: author: "Rasool Cool https://www.2daygeek.com/author/rasool/"
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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 map SAN LUN, Disk and FileSystem in Linux
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======
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For some requirements, you may need to find a block device mapped against a logical unit number (LUNs) and filesystem (FS) for FS expansion or disaster recovery (DR) activity.
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Similar activity may happens frequently when you are managing the bigger infrastructure. Let’s say, more than 1000+ servers hosting various applications.
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**Refer the following articles similar to this:**
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* **[How to Find SAN disk LUN id in Linux][1]**
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* **[How to map ASM disks to Physical disks in Linux][2]**
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In this article, we will show you how to map physical disk, Storage LUN and FileSystem (FS) in Linux.
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### Shell Script to map Physical disks to Storage LUNs and FileSystem in Linux
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This small shell script helps you to identify which SAN disks are mapped to which Block devices and Filesystem on Linux.
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```
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vi block_device_mapping_with_LUN_FS.sh
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#!/bin/bash
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for lunmap in `lsblk | grep disk | grep ^s | awk '{print $1}'`
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do
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for mpoint in `lsblk /dev/$lunmpa | grep lvm | awk '{print $NF}'`
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do
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echo "$lunmap --> $mpoint --> $(smartctl -a /dev/$lunmap | grep "Logical Unit id" | awk -F":" '{print $2}')"
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done
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done
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```
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Set an executable permission to ‘block_device_mapping_with_LUN_FS.sh’ file.
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```
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chmod +x block_device_mapping_with_LUN_FS.sh
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```
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Finally run the script to view the results.
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```
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sh block_device_mapping_with_LUN_FS.sh
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```
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![][3]
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**Make a Note:** In the above output, device sda won’t show any LUN info because it’s a virtual disk added from VMWare end, which doesn’t have any LUN. Other 3 disks are mapped from Storage that’s why we are able to see LUN info.
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If you would like to run the script on the fly, use the following one liner script.
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```
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for lunmap in `lsblk | grep disk | grep ^s | awk '{print $1}'`; do for mpoint in `lsblk /dev/$lunmpa | grep lvm | awk '{print $NF}'`; do echo "$lunmap --> $mpoint --> $(smartctl -a /dev/$lunmap | grep "Logical Unit id" | awk -F":" '{print $2}')"; done; done
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sda --> /
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sda --> /usr
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sda --> /opt
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sda --> /tmp
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sda --> /var
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sda --> /home
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sdb --> /data --> 0x3600d0230000000000e1140463955737c
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sdc --> /app --> 0x3600d0230000000000e114046395577cd
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sdd --> /backup --> 0x3600d0230000000000e11404639558cc5
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```
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##### Wrapping Up
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In this tutorial, we’ve shown you how to check LUN presented from SAN with underlying OS disk and associated Filesystem on Linux.
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If you have any questions or feedback, feel free to comment below.
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--------------------------------------------------------------------------------
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via: https://www.2daygeek.com/map-san-lun-physical-disk-filesystem-linux/
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作者：[Rasool Cool][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/rasool/
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[b]: https://github.com/lujun9972
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[1]: https://www.2daygeek.com/find-san-disk-lun-id-linux/
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[2]: https://www.2daygeek.com/shell-script-map-oracle-asm-disks-physical-disk-lun-in-linux/
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[3]: https://www.2daygeek.com/wp-content/uploads/2023/06/map-san-lun-physical-disk-filesystem-linux-1a-1024x364.jpg
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