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【OLK 6.6】io卡死没有hungtask告警
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#IAAQ73
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Li Lingfeng
Opened this issue
2024-07-04 22:14
社区为了避免因为io完成慢，超过了hung task的检测阈值而导致的hung task误报，合入了如下补丁，以避免在下同步io时检测hung task： commit 4b1977698ceb4c4caa800d475127139da49966f9 Author: Mark Lord <kernel@teksavvy.com> Date: Fri Sep 24 09:51:13 2010 -0400 block: Prevent hang_check firing during long I/O commit e6249cdd46e43a7d3bdb8cce5fe24565d6c11e94 Author: Ming Lei <ming.lei@redhat.com> Date: Sun May 3 09:54:22 2020 +0800 block: add blk_io_schedule() for avoiding task hung in sync dio commit de6a78b601c529398ad1448e3bffcade1fcf5a70 Author: Ming Lei <ming.lei@redhat.com> Date: Wed Mar 18 11:43:36 2020 +0800 block: Prevent hung_check firing during long sync IO 社区为了避免针对io完成较慢场景hungtask的误报，直接将hungtask的检测禁掉了，这将会导致io因为内核中块层或者驱动层的bug hang住时，原本存在的hungtask告警也没有了。有部分下游依赖于该hungtask告警进行异常场景的检测和恢复。
社区为了避免因为io完成慢，超过了hung task的检测阈值而导致的hung task误报，合入了如下补丁，以避免在下同步io时检测hung task： commit 4b1977698ceb4c4caa800d475127139da49966f9 Author: Mark Lord <kernel@teksavvy.com> Date: Fri Sep 24 09:51:13 2010 -0400 block: Prevent hang_check firing during long I/O commit e6249cdd46e43a7d3bdb8cce5fe24565d6c11e94 Author: Ming Lei <ming.lei@redhat.com> Date: Sun May 3 09:54:22 2020 +0800 block: add blk_io_schedule() for avoiding task hung in sync dio commit de6a78b601c529398ad1448e3bffcade1fcf5a70 Author: Ming Lei <ming.lei@redhat.com> Date: Wed Mar 18 11:43:36 2020 +0800 block: Prevent hung_check firing during long sync IO 社区为了避免针对io完成较慢场景hungtask的误报，直接将hungtask的检测禁掉了，这将会导致io因为内核中块层或者驱动层的bug hang住时，原本存在的hungtask告警也没有了。有部分下游依赖于该hungtask告警进行异常场景的检测和恢复。
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