Cache: L2ARC Errors
This statistic shows L2ARC error statistics.
This may be useful to leave enabled when using cache devices, for when
troubleshooting L2ARC issues beyond the standard statistics.
Available breakdowns:
Table 57 A Breakdown of L2ARC Errors
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error
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L2ARC error type. See table below.
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L2ARC error types:
Table 58 L2ARC Error Types
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memory abort
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The L2ARC choose not to populate for a one second interval due
to a shortage of system memory (DRAM) which holds the L2ARC
metadata. Continual memory aborts will prevent the L2ARC from
warming up.
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bad checksum
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A read from a cache device failed the ZFS ARC checksum. This
may be an indicator that a cache device is beginning to
fail.
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io error
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A cache device returned an error. This may be an indicator
that a cache device is beginning to fail.
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