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passthrough If an error is returned from a lower device, the block layer is written to OOS and the error is passed to the upper layer. The error block is usually retried I / O by the upper layer, and if it succeeds at the time of retry, the OOS will be resolved naturally, otherwise the OOS will be recorded and left. This is the default for bsr.
call-local-io-error Call the local-io-error handler (see the handlers section).
detach Detach a low-level device and put it into diskless state. In diskless state, I / O cannot be performed and failover is required immediately.
max-passthrough-count
When on-io-error is the pass-through policy, repeating pass-throughs more than a certain number of times is considered a permanent disk failure. Specify a numeric threshold here. It is used only on Linux and defaults to 100.
resync-after res-name/volume
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