linux – XFS添加配额 – 首次挂载/启动时跳过配额检查

发布时间：2020-12-13 17:16:43 所属栏目：Linux 来源：网络整理

导读：我们在集群上运行14TB XFS文件服务器,并希望添加配额支持.这是在CentOS 6.3(最终版)下运行3.9.2-1.el6.elrepo.x86_64内核. 问题是当我们卸载XFS RAID并重新安装它添加配额支持时,mount命令会挂起. Sever IS响应并且无法访问XFS安装点.还原/ etc / fstab中的

我们在集群上运行14TB XFS文件服务器,并希望添加配额支持.这是在CentOS 6.3(最终版)下运行3.9.2-1.el6.elrepo.x86_64内核.

问题是当我们卸载XFS RAID并重新安装它添加配额支持时,mount命令会挂起. Sever IS响应并且无法访问XFS安装点.还原/ etc / fstab中的更改以删除配额选项没有挂起挂起.

我怀疑在重新安装时,XFS正在对14TB RAID运行配额检查.我的问题是：如何禁用初始配额检查,以便它可以正确安装并在后台运行配额检查？

/ etc / fstab条目：

/dev/sdb      /w1      xfs     defaults,noatime,usrquota,grpquota 1 2

/ var / log / messages输出：

Jun  6 11:37:43 nas-2-1 kernel: XFS (sdb): Mounting Filesystem
Jun  6 11:37:43 nas-2-1 kernel: XFS (sdb): Ending clean mount
Jun  6 11:37:43 nas-2-1 kernel: XFS (sdb): Quotacheck needed: Please wait.

当挂载点处于活动状态时,我不介意高CPU使用率或性能下降,但让它不可用不是我们想要坚持的选项.我怀疑在14TB运行配额检查需要大约整整一个工作日.

解决方法

如果你使用xfs,你将始终遇到这个问题：

(quotaon手册页)

"XFS filesystems are a special case - XFS considers quota information as
   filesystem  metadata  and  uses  journaling  to  provide a higher level
   guarantee of consistency.  There are two components  to  the  XFS  disk
   quota  system:  accounting  and  limit  enforcement.   XFS  filesystems
   require that quota accounting be  turned  on  at  mount  time.   It  is
   possible  to  enable and disable limit enforcement on an XFS filesystem
   after quota accounting is already turned on.  The default is to turn on
   both accounting and enforcement."

另外,从xfs_quota手册页：

disable [ -gpu ] [ -v ] Disables quota enforcement,while leaving quota accounting active. The -v option (verbose) displays the state after the operation has completed. off [ -gpu ] [ -v ] Permanently switches quota off for the filesystem identified by the current path. **Quota can only be switched back on subse

（编辑：李大同）

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