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Subject: [Bug 198242] [zfs] L2ARC degraded. Checksum errors, I/O errors
Date: Tue, 17 Mar 2015 09:18:26 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198242

Lehel Bernadt <lehel.bernadt@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lehel.bernadt@gmail.com

--- Comment #4 from Lehel Bernadt <lehel.bernadt@gmail.com> ---
I'm having the same problem. L2ARC is on a Samsung 840 PRO SSD.

------------------------------------------------------------------------
ZFS Subsystem Report                            Tue Mar 17 10:12:30 2015
------------------------------------------------------------------------

L2 ARC Summary: (DEGRADED)
        Passed Headroom:                        79.34m
        Tried Lock Failures:                    8.06m
        IO In Progress:                         934
        Low Memory Aborts:                      33
        Free on Write:                          2.38k
        Writes While Full:                      8.99k
        R/W Clashes:                            243
        Bad Checksums:                          5.83m
        IO Errors:                              768.49k
        SPA Mismatch:                           21.27b

L2 ARC Size: (Adaptive)                         76.25   GiB
        Header Size:                    0.26%   200.69  MiB

L2 ARC Evicts:
        Lock Retries:                           11
        Upon Reading:                           0

L2 ARC Breakdown:                               35.31m
        Hit Ratio:                      31.74%  11.21m
        Miss Ratio:                     68.26%  24.11m
        Feeds:                                  1.59m

L2 ARC Buffer:
        Bytes Scanned:                          1.36    PiB
        Buffer Iterations:                      1.59m
        List Iterations:                        101.39m
        NULL List Iterations:                   994.41k

L2 ARC Writes:
        Writes Sent:                    100.00% 40.13k

------------------------------------------------------------------------

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