Sun Storage 3510 FC Array
 
Sun Storage 3511 SATA Array
 

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When a Sun StorEdge 3510 JBOD or 3511 RAID array (with firmware 3.2x or later) is connected using a series LP10000 Host Bus Adapter (HBA), the array may experience periodic I/O interruption indicated by excessive filesystem activity. If misdiagnosed, this condition could lead to unnecessary hardware replacement.

This issue can occur on the following platforms:

• Sun StorEdge 3510 JBOD or 3511 RAID array with firmware 3.2x or later

Notes:

1. The 3510 RAID array is NOT subject to this issue.

2. This issue will only occur with the LP 10000 HBA in a direct attach (point to point) connection with the 3510 JBOD or 3511 RAID array. I/O interruption will be isolated to ports 0 and 1 on the array.

3. The issue is due to an incompatibility between the LP 10000 and the Port Bypass Circuitry (PBC) used on channels 0/1 of the 3510 JBOD or 3511 RAID array.

To determine the firmware version on the 3511, the following command can be run:

sccli> show inquiry
Vendor: SUN
Product: StorEdge 3511
Revision: 423A

Output from iostat(1M) will appear similar to the following; on some devices showing 100% busy on the file system:

    dd if=/dev/zero of=/dev/rdsk/c9t40d0s0 bs=1048576
          extended device statistics
    r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
    0.5 0.0 1.5 0.0 0.0 0.0 0.0 5.1 0 0 d3
    0.5 0.0 1.5 0.0 0.0 0.0 0.0 5.1 0 0 d13
    0.5 0.0 1.5 0.0 0.0 0.0 0.0 5.0 0 0 c1t0d0
    12.0 126.0 128.0 643.5 0.0 0.1 0.0 0.5 0 6 c2t0d1
    4.5 126.0 44.0 643.5 0.0 0.1 0.0 0.5 0 5 c3t0d0
    5.0 2.0 40.0 20.0 0.0 0.0 0.0 4.5 0 3 c4t0d0
    3.0 2.0 24.0 40.0 0.0 0.0 0.0 2.1 0 1 c4t1d0
    0.0 3.5 0.0 3.0 0.0 0.0 0.0 2.5 0 0 c4t1d1
    7.5 5.5 60.0 52.0 0.0 0.1 0.0 8.4 0 6 c8t0d0
    604.0 7.0 4831.8 23.7 0.0 1.5 0.0 2.4 2 90 c8t1d0
    0.0 4.0 0.0 38.2 0.0 0.0 0.0 6.5 0 1 c8t0d1
    126.0 12.0 1008.0 148.0 0.0 1.0 0.0 6.9 0 49 c8t1d1
    13.0 0.0 104.0 0.0 0.0 0.1 0.0 7.0 0 9 c8t0d2
    51.0 11.0 408.0 44.0 0.0 0.5 0.0 7.9 0 38 c8t1d2
    0.0 4.0 0.0 20.7 0.0 0.0 0.0 0.4 0 0 c2t0d3
    1.0 1.0 8.0 6.0 0.0 0.0 0.0 11.2 0 2 c8t0d3
    3.0 0.5 24.0 4.0 0.0 0.0 0.0 6.3 0 2 c8t0d4
    0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0 100 c9t40d0 <---
          extended device statistics
    r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
    2.0 0.0 13.5 0.0 0.0 0.0 0.0 3.1 0 1 d3
    0.5 25.5 4.0 29.2 0.2 0.8 8.4 31.4 22 23 d7
    1.0 0.0 8.0 0.0 0.0 0.0 0.0 0.3 0 0 d13
    0.5 26.5 4.0 29.7 0.0 0.2 0.0 8.9 0 9 d17
    1.0 0.0 5.5 0.0 0.0 0.0 0.0 5.8 0 1 d23
    0.0 25.5 0.0 29.2 0.0 0.8 0.0 31.5 0 22 d27
    1.5 26.5 12.0 29.7 0.0 0.2 0.0 8.6 0 9 c1t0d0
    1.0 40.0 5.5 36.5 0.0 1.2 0.0 28.1 0 27 c1t1d0
    5.5 108.5 60.0 615.5 0.0 0.1 0.0 0.9 0 5 c2t0d1
    1.5 111.0 16.0 614.2 0.0 0.1 0.0 1.1 0 4 c3t0d0
    12.0 2.5 96.5 20.0 0.0 0.0 0.0 3.2 0 5 c4t0d0
    21.0 1.5 152.5 4.0 0.0 0.1 0.0 3.5 0 8 c4t1d0
    22.5 0.0 180.0 0.0 0.0 0.1 0.0 6.5 0 15 c8t0d0
    412.0 5.0 3295.8 84.0 0.0 0.9 0.0 2.1 1 82 c8t1d0
    36.0 0.0 288.0 0.0 0.0 0.2 0.0 4.3 0 15 c8t0d1
    193.5 20.5 1547.9 208.0 0.0 2.0 0.0 9.5 1 86 c8t1d1
    3.0 0.0 24.0 0.0 0.0 0.0 0.0 9.7 0 3 c8t0d2
    53.0 14.0 424.0 112.0 0.0 0.8 0.0 11.3 0 56 c8t1d2
    2.0 0.0 16.0 0.0 0.0 0.0 0.0 10.9 0 2 c2t0d3
    14.0 3.0 96.5 22.0 0.0 0.1 0.0 8.3 0 14 c8t0d3
    14.0 2.0 96.5 16.0 0.0 0.1 0.0 7.3 0 12 c8t0d4
    0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0 100 c9t40d0 <---
    ...

To work around the described issue:

A) Do not use the LP 1000 HBA for 3510 JBOD or 3511 RAID array configurations.

B) Use a fabric switch, No direct connection (HBA-Array).

http://www.emulex.com/ts/downloads/lp10000/lp10000.html

References

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