Handle FLUSH errors as "expected" #16110
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Before openzfs#16061 zio_vdev_io_done() was not used for FLUSH requests. Addition of it triggers reprobe each TXG for vdevs not supporting them. Since those errors are often expected, they are normally handled by individual vdev drivers and should be ignored here. Signed-off-by: Alexander Motin <[email protected]> Sponsored by: iXsystems, Inc.
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@robn Would you take a look, please. |
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Before openzfs#16061 zio_vdev_io_done() was not used for FLUSH requests. Addition of it triggers reprobe each TXG for vdevs not supporting them. Since those errors are often expected, they are normally handled by individual vdev drivers and should be ignored here. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Rob Norris <[email protected]> Signed-off-by: Alexander Motin <[email protected]> Sponsored by: iXsystems, Inc. Closes openzfs#16110
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Before #16061 zio_vdev_io_done() was not used for FLUSH requests. Addition of it triggers reprobe each TXG for vdevs not supporting them. Since those errors are often expected, they are normally handled by individual vdev drivers and should be ignored here.
How Has This Been Tested?
Running simple write test on FreeBSD on NVMes without volatile cache generates hundred of read requests per second per SSD, that I traced to vdev reprobe logic, triggered by flush requests errors. This patch removes them.
Types of changes
Checklist:
Signed-off-by.