3.错误代码:D5385D18

在AIX 5200-04环境中,遇到FCP_ARRAY_ERR4错误标识D5385D18。问题源于rw_timeout值设置过大,通过修改`chdev -l hdisk6 -a rw_timeout=1000`为更合适的值,解决了频繁出现的错误提示。该问题并非由盘阵或交换机故障引起,调整rw_timeout参数是有效解决方案。

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解决方法:实际上,盘阵上也没有报硬盘的错误,交换机也正常,经过检查,最后修改了chdev -l hdisk6 -a rw_timeout=1000(这个值有点偏大)解决了此问题


环境是AIX5200-04,DS4300盘阵,F08光纤交换机
故障现象:
   升级AIX的5200-06的补丁之后,系统开始频繁地报
LABEL:  FCP_ARRAY_ERR4
IDENTIFIER: D5385D18
Date/Time:       Thu Mar  9 07:31:15 BEIS
Sequence Number: 729
Machine Id:      0056A67D4C00
Node Id:         hrip_mz
Class:           H
Type:            TEMP
Resource Name:   hdisk6          
Resource Class:  disk
Resource Type:   array
Location:        U0.1-P2-I5/Q1-W200500A0B816965B-L0
Description
ARRAY OPERATION ERROR
Probable Causes
ARRAY DASD MEDIA  
ARRAY DASD DEVICE
Failure Causes
DASD MEDIA
DISK DRIVE
Recommended Actions
PERFORM PROBLEM DETERMINATION PROCEDURES
这样的错误,实际上,盘阵上也没有报硬盘的错误,交换机也正常,经过检查,最后修改了chdev -l hdisk6 -a rw_timeout=1000(这个值有点偏大)解决了此问题.经过求证,在网上找到一个类似的说明:
Early vendor support recommendation is to increase rw_timeout, as they judge it as characteristic of a long fibre connection, but cables are only 15 metre, and due to its nature, we are loathe to start performing outages just to tweak settings that shouldn't be causing issue. 
[ 0.717511] dw_mmc fffd0000.sdhc0: IDMAC supports 32-bit address mode. [ 0.724643] dw_mmc fffd0000.sdhc0: Using internal DMA controller. [ 0.730786] dw_mmc fffd0000.sdhc0: Version ID is 270a [ 0.735864] dw_mmc fffd0000.sdhc0: DW MMC controller at irq 40,32 bit host data width,256 deep fifo [ 0.765243] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 400000Hz, actual 396825HZ div = 63) [ 0.795249] dw_mmc fffd0000.sdhc0: 1 slots initialized [ 0.800444] Unable to handle kernel paging request at virtual address 00007000, epc == 80197c6e [ 0.809124] Oops: 00000000 [ 0.811819] [ 0.811819] CURRENT PROCESS: [ 0.811819] [ 0.817640] COMM=swapper PID=1 [ 0.820680] PC: 0x80197c6e [ 0.823375] orig_a0: 0x00007300 [ 0.826510] PSR: 0x80140340 [ 0.829294] a0: 0x00007300 a1: 0x024080c0 a2: 0x00000000 a3: 0x000000cc [ 0.836147] r4: 0x80111d18 r5: 0xbe001d00 r6: 0x024080c0 r7: 0x8011d7cc [ 0.843337] r8: 0x00000000 r9: 0x00000006 r10: 0x80118fb4 r11: 0x80118f94 [ 0.850536] r12 0xbefb8200 r13: 0xbe001a80 r15: 0x80367962 [ 0.856267] r16:0x80118fb4 r17: 0x0000001c r18: 0x800a0340 r19: 0x000004ca [ 0.863717] r20 0x00000004 r21: 0x0000004f r22: 0x00000007 r23: 0x00000000 [ 0.871176] r24 0x00000000 r25: 0x0000008c r26: 0x00000000 r27: 0x00000000 [ 0.878634] r28 0x00000000 r29: 0x00000000 r30: 0x00000000 tls: 0x00000001 [ 0.886091] hi 0x000000c7 lo: 0x112e8000 [ 0.890426] CODE: 80197c50: e3ff6c17 c400fe59 6d034820 6420c007 80197c60: 8000ea03 e906698c 0421002c d0409545 80197c70: c000082d c0806021 95407020 2000d982 80197c80: 08056702 2001d982 0c04670e 6420c001 [ 0.909364] KERNEL STACK: be037db8: be039d34 00000000 be037db8 803b8ab0 be037dc8: be0140d9 804cf074 804cf688 000007be be037dd8: be0140d2 80111d18 be001d00 024080c0 be037de8: 8011d7cc 00000000 00000006 8011e870 be037df8: 00000001 80367962 80197c6e 80140340 be037e08: 02142004 00007300 00007300 024080c0 be037
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03-20
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