forked from luck/tmp_suning_uos_patched
3407ef5262
This target is the same as the linear target except that it returns I/O errors periodically. It's been found useful in simulating failing devices for testing purposes. I needed a dm target to do some failure testing on btrfs's raid code, and Mike pointed me at this. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
18 lines
708 B
Plaintext
18 lines
708 B
Plaintext
dm-flakey
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=========
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This target is the same as the linear target except that it returns I/O
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errors periodically. It's been found useful in simulating failing
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devices for testing purposes.
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Starting from the time the table is loaded, the device is available for
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<up interval> seconds, then returns errors for <down interval> seconds,
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and then this cycle repeats.
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Parameters: <dev path> <offset> <up interval> <down interval>
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<dev path>: Full pathname to the underlying block-device, or a
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"major:minor" device-number.
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<offset>: Starting sector within the device.
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<up interval>: Number of seconds device is available.
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<down interval>: Number of seconds device returns errors.
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