设置XFS文件系统Quota

C/C++ , Comments

CentOS7开始默认XFS文件系统, 所以之前的旧代码需要一些更改.

查询XFS文件系统Quota的几个命令

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# xfs_quota -x -c 'report -h' /home

# xfs_quota -x -c report /home

# xfs_quota -c 'df -h' /PATH/TO/QUOTA

# xfs_quota -c 'df -ih' /PATH/TO/QUOTA    // 节点inode

需要安装xfs的头文件:

yum install xfsprogs-devel

Sample Code:

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#include <sys/types.h>
#include <sys/quota.h>
#include <sys/statfs.h>
#include <linux/quota.h>
#include <linux/magic.h>
#include <xfs/xqm.h>

void set_xfs_quota (int u_id, int limit)

{

    fs_disk_quota_t xfsquota;

    if (quotactl(QCMD(Q_XGETQUOTA, USRQUOTA), "/dev/mapper/centos-home", u_id, (caddr_t)&xfsquota) != 0)

     {
          string errStr(strerror(errno));

          cout << " errno("<< errno << "):" << errStr << endl;

     }

    //  设置limit MB的Quota

    xfsquota.d_fieldmask = FS_DQ_LIMIT_MASK;

    xfsquota.d_blk_hardlimit = limit * 1024 * 2;   // 要乘以2

    xfsquota.d_blk_softlimit = limit * 1024 * 2;

    if (quotactl(QCMD(Q_XSETQLIM, USRQUOTA), "/dev/mapper/centos-home", u_id, (caddr_t)(&xfsquota)) != 0)

    {
        string errStr(strerror(errno));

        cout << " errno("<< errno << "):" << errStr << endl;
    }
}