xfsquota：一个便捷的管理xfs磁盘配额的命令行工具

2022-04-23 22:20 约 606 字预计阅读 2 分钟

动机

在Linux有一个xfs_quota（在xfsprogs工具包下）命令行工具，为什么还用golang实现了？

主要是要因为最近要实现磁盘quota的控制，同时觉得看了docker内的源码，都是利用cgo的方式来实现的，如果直接用xfs_quota的方式查看配额，无法直观的看到某一个目录下的配额，只能列出所有，并且没有具体目录，类似如下结果，在设置了docker 容器的quota之后查看每个容器的配额，只有Project ID无法判别到具体某个目录：

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 # xfs_quota -x -c "report" /data
 Project quota on /data (/dev/vdb)
                               Blocks
Project ID       Used       Soft       Hard    Warn/Grace
---------- --------------------------------------------------
#0            7394256          0          0     00 [--------]
#2                  8   52428800   52428800     00 [--------]
#3                  8   52428800   52428800     00 [--------]
#4                  8   52428800   52428800     00 [--------]
#5               2360   52428800   52428800     00 [--------]
#6                  8   52428800   52428800     00 [--------]
#7                  8   52428800   52428800     00 [--------]
#8                  8   52428800   52428800     00 [--------]
#9              10568   52428800   52428800     00 [--------]
#10                 0   52428800   52428800     00 [--------]
#11                 0   52428800   52428800     00 [--------]
#12                 0   52428800   52428800     00 [--------]
#13                 0   52428800   52428800     00 [--------]
#14                 0   52428800   52428800     00 [--------]
#15                 0   52428800   52428800     00 [--------]
#16                 0   52428800   52428800     00 [--------]
#17                 0   52428800   52428800     00 [--------]
#18                 0   52428800   52428800     00 [--------]
#19                 0   52428800   52428800     00 [--------]

所有用cgo的方式，可以实现对某个目录的quota查看。

主要功能

support set quota
support get quota
clean quota

Usage

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xfsquota is a tool for managing XFS quotas

Usage:
  xfsquota [command]

Available Commands:
  clean       clean quota information
  completion  Generate the autocompletion script for the specified shell
  get         Get quota information
  help        Help about any command
  set         Set quota information
  version     get version

Flags:
  -h, --help   help for xfsquota

Use "xfsquota [command] --help" for more information about a command.

Set Quota

set quota size 1MiB ,inodes 20 for path /data/test/quota

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> xfsquota set /data/test/quota  -s 1MiB -i 20

set quota success, path: /data/test/quota, size:1MiB, inodes:20

Get Quota

get quota for path /data/test/quota

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> xfsquota get /data/test/quota

quota Size(bytes): 1048576
quota Inodes: 20
diskUsage Size(bytes): 0
diskUsage Inodes: 1

Clean Quota

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xfsquota clean /data/test/quota