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什么是WAFL scan status命令?

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core<a>Data ONTAP 7</a><a> Data ONTAP 8.x</a><a> Data ONTAP 9.x</a><a> 1004238</a>
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可不使用  

适用场景

  • Data ONTAP 8
  • ONTAP 9

问题解答

  • WAFL使用各种后台扫描程序来执行文件系统操作
  • 通常、创建或删除快照是两种最常见的扫描程序
  • 要运行此命令:
    1. ::> node run -node node1
    2. ::> priv set advanced
    3. ::> wafl scan status
  • 扫描ID -这是与扫描关联的进程ID。如果此过程从未完成或停止、则此ID不会更改

注意:wafl scan status 对于Data ONTAP 7-模式和更高版本的集群模式Data ONTAP系统、此命令都需要高级权限。建议仅供NetApp人员使用

扫描类型: 

  • 活动位图重新排列: 对WAFL数据结构执行优化的扫描程序。从ONTAP 9开始不再需要
  • 容器块回收: 按卷清理最近释放的WAFL块的扫描。此扫描程序执行的工作有助于计算卷中的可用空间。这通常在删除快照期间运行
  • Inode to parent: 将Inode编号映射到相对路径名称、可在Data ONTAP 7-模式的fpolicy中使用。有关详细信息、请参见 如何在卷上启用或禁用I2P一文
  • deswzzling: 在Data ONTAP 7-模式和ONTAP 9 DP模式的SnapMirror目标卷上、此扫描会将聚合(物理)块位置映射到卷块位置、因为传输不包括物理磁盘块位置。有关详细信息、请参见我们有关deswzzling的文章
  • Snap create摘要更新: 创建卷快照时用于更新内部元数据的扫描
  • Blocks" Used Summary update: 创建卷快照时更新快照空间使用量的内部元数据的扫描
  • WAFL布局测量重新分配过程的一部分
  • 散热: FabricPool技术的一部分、将块标记为可分层的散热
  • 分层: FabricPool技术的一部分、用于将热数据分层到冷存储
  • 非活动数据报告: 构建用于生成冷块报告的扫描可了解每个卷的数据访问模式

注意: 扫描类型更多、但这些是最常见的扫描类型

 

追加信息

示例: 以下是在ONTAP 9上运行WAFL扫描状态的示例。对于7-模式、语法相同、但第一行除外

::*> wafl scan status Volume vol1: Scan id Type of scan progress 131021 container block reclamation block 245 of 673 (fbn 666) Volume vol2: Scan id Type of scan progress 131015 container block reclamation block 410 of 1050 (fbn 305) Volume vol3: Scan id Type of scan progress 131013 container block reclamation block 2463 of 4038 (fbn 3586) Volume vol4: Scan id Type of scan progress 131017 container block reclamation block 32 of 97 (fbn 63) Volume vol5: Scan id Type of scan progress 130504 WAFL layout measurement public inode 1599012 of 9074660, block 765 of 1996 Volume vol6: Scan id Type of scan progress 131029 container block reclamation block 5 of 20 (fbn 17) Volume vol7: Scan id Type of scan progress 131024 volume deswizzling snap 911, inode 4068843 of 6198122. level 1 of normal files. Totals: Normal files: L1:5/179926 L2:4/33564 L3:1/1237 L4:0/0 Inode file: L0:0/0 L1:0/0 L2:0/0 L3:0/0 L4:0/0 131023 container block reclamation block 1229 of 2019 (fbn 268) Volume vol8: Scan id Type of scan progress 131038 container block reclamation block 3 of 17 (fbn 6) Volume vol9: Scan id Type of scan progress 131020 volume deswizzling snap 910, inode 1822107 of 13286210. level 1 of normal files. Totals: Normal files: L1:14/95800 L2:8/169379 L3:1/10743 L4:0/0 Inode file: L0:0/0 L1:0/0 L2:0/0 L3:0/0 L4:0/0 131019 container block reclamation block 3684 of 8144 (fbn 6565)

 

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