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LVM volume management and quota settings

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Case study: LVM volume management and quota setup

Experimental environment: The company is ready to build a mail server (REHL5 system platform) in the Internet, providing e-mail space for employees and some VIPK customers across the country. Plan to add two SCSI hard drives and build LVM logical volumes to hold mail data, given the need for dynamic scaling and limit the user's mailbox space by disk quotas.

Requirements Description: Using LVM Disk Management scheme

Set up and enable disk quotas

Recommended steps:

1 adding disk devices and establishing a LLVM Disk Management scheme

Add two SCSI HDD devices and complete hard drive detection and partitioning

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FDISK/DEV/SDB: Access to interactive partition interface

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N: New partition P: List disk partition condition T: Change partition type w: Save partition operation

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And so on, complete the/DEV/SDC partition

Partprobe: Enables the operating system to detect a new partition table condition (after changing the partition settings of the disk, it is advisable to restart the system or perform "Partprobe/dev/sdb")

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Fdisk–l: Can be viewed. Confirm the device name and location of the new drive

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Convert/DEV/SDB1 and/DEV/SDC1 oh partitions to physical volumes

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Consolidate two physical volumes to create a volume group named Mail_store

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Use the MKFS command to format the logical volume MBOX, create the EXT3 file system, and mount it to the/mailbox directory

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2 Adding quota support

In the REHL5 system, the kernel has a disk quota function for the Linux file system, and the quota package is installed by default in the system

Confirm the installation of the quota package, and the list to view the Quota Manager program for the quota package installation

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Modify mount settings in the Etc/fstab file, add usrquota grpquota parameters

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Re-mount the logical volume MBOX to the mailbox directory, adding Usrquota Grpquota quota support

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Using the Quotasheck command to establish quota support in the/mailbox file system

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3 Set up and enable disk quotas

Set disk quotas for Terry users and ACCP groups using the Edquota command

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Compiling quotas for user Terry

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Compiling the ACCP Group

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Use the quota command to enable the disk quotas feature

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4 Verifying the disk quotas feature

Switch to the/mailbox directory using the user account login system in the Jerry User ACCP group and use the DD command to verify the quota function

Testing with the DD conversion tool

The DD command is a device conversion and replication command

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Use the Requota command to view disk quota usage for the/mailbox file system

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LVM volume management and quota settings

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