RE: lpfc RAID1 device panics when one device goes away

From: Hamilton Andrew (Andrew.Hamilton_at_afccc.af.mil)
Date: 01/28/04

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    To: redhat-list@redhat.com
Date: Wed, 28 Jan 2004 15:44:16 -0500

    What's your SAN? Why don't you configure your raid1 on the SAN and let it
    publish that raid group as 1 LUN? Are you using a any kind of fibre switch
    between your cards and your SAN?

    Drew

    -----Original Message-----
    From: Bruen, Mark [mailto:mbruen@trilegiant.com]
    Sent: Wednesday, January 28, 2004 3:28 PM
    To: redhat-list@redhat.com
    Subject: lpfc RAID1 device panics when one device goes away

    I'm running RedHat AS 3.0 kernel 2.4.21-4.ELsmp on a Dell 1750 with 2 Emulex

    LP9002DC-E HBAs. I've configured a RAID1 device called /dev/md10 from 2 SAN
    based LUNs /dev/sdc and /dev/sde. Everything works fine until I disable one
    of
    the HBA paths to the disk. Here's the console output:
    [root@reacher root]# !lpfc1:1306:LKe:Link Down Event received Data: x2 x2 x0
    x20
      I/O error: dev 08:40, sector 69792
    raid1: Disk failure on sde, disabling device.
             Operation continuing on 1 devices
    md10: vno@ pspar2e! d?i@
                             s@kq tAo rec@oqnAst`rIu/Oc
                                                       t AaqArra@qyA!@ -v-@
    cpont
    inI/uOinhgr oihn de_g_r_a_m@vqA@`@ 70288
      I/O error: dev 08`I/O sector 70536
      I/O error: dev 08:40, sector 70784
      I/O error: dev 08:40, sector 71032
      I/O error: dev 08:40, sector 71280
      I/O error@qA@v@p2!?@
                          AqA@qA`I/O
                                    BqA@qA@v@p I/Oh 7h____mv@`dev 08:40, sector
    72024
      `I/Oerror: dev 08:40, sector 72272
      I/O error: dev 08:40, sector 72520
      I/O error: dev 08:40, sector 72768
      I/O error: dev 08:40, sector 73@qA@v@p2!?@
                                                BqA@qA`I/O
                                                          CqA@qA@v@p
    I/Ohdeh____mv@`2
      I/O error: dev 08:40, `I/Oor 73760
      I/O error: dev 08:40, sector 74008
      I/O error: dev 08:40, sector 74256
      I/O error: dev 08:40, sector 74504
      I/O error: dev@qA@v@p2!?@
                               CqA@qA`I/O
                                         DqA@qA@v@p I/Oh0
    h____mv@`8:40, sector 75248
      I/O e`I/O: dev 08:40, sector 75496
      I/O error: dev 08:40, sector 75744
      I/O error: dev 08:40, sector 75992
      I/O error: dev 08:40, sector 76240
    <@qA@v@p2!?@
                 DqA@qA`I/O
                           EqA@qA@v@p I/Oh8:h____mv@` I/O error: dev 08:40,
    secto`I/O984
      I/O error: dev 08:40, sector 77232
      I/O error: dev 08:40, sector 77480
      I/O error: dev 08:40, sector 77728
      I/O error: dev 08:4@qA@v@p2!?@
                                    EqA@qA`I/O
                                              FqA@qA@v@p I/Oh Ih____mv@` sector
    78352
      I/O error:`I/O 08:40, sector 78600
      I/O error: dev 08:40, sector 78848
      I/O error: dev 08:40, sector 79096
      I/O error: dev 08:40, sector 79344
      I/@qA@v@p2!?@
                   FqA@qA`I/O
                             GqA@qA@v@p I/Oh sh____mv@`error: dev 08:40, sector
    800`I/O4> I/O error: dev 08:40, sector 80336
      I/O error: dev 08:40, sector 80584
      I/O error: dev 08:40, sector 80832
      I/O error: dev 08:40, se@qA@v@p2!?@
                                         GqA@qA`I/O
                                                   HqA@qA@v@p I/Oherh____mv@`or
    81576
      I/O error: dev `I/O0, sector 81824
      I/O error: dev 08:40, sector 82072
      I/O error: dev 08:40, sector 82320
      I/O error: dev 08:40, sector 82568
      I/O err@qA@v@p2!?@
                        HqA@qA`I/O
                                  IqA@qA@v@p I/Ohorh____mv@`: dev 08:40, sector
    83312
    <4`I/OO error: dev 08:40, sector 83560
      I/O error: dev 08:40, sector 83808
      I/O error: dev 08:40, sector 84056
    Unable to handle kernel paging request at virtual address a0fb8488
      printing eip:
    c011f694
    *pde = 00000000
    Oops: 0000
    lp parport autofs tg3 floppy microcode keybdev mousedev hid input usb-ohci
    usbcore ext3 jbd raid1 raid0 lpfcdd mptscsih mptbase sd_mod scsi_mod
    CPU: -1041286984
    EIP: 0060:[<c011f694>] Not tainted
    EFLAGS: 00010087

    EIP is at do_page_fault [kernel] 0x54 (2.4.21-4.ELsmp)
    eax: f55ac544 ebx: f55ac544 ecx: a0fb8488 edx: e0b3c000
    esi: c1ef4000 edi: c011f640 ebp: 000000f0 esp: c1ef40c0
    ds: 0068 es: 0068 ss: 0068
    Process Dmu (pid: 0, stackpage=c1ef3000)
    Stack: 00000000 00000002 022c1008 c1eeee4c c1eff274 00000000 00000000
    a0fb8488
            c17c4520 f58903f4 00000000 c1efd764 c1eee5fc f7fe53c4 00030001
    00000000
            00000002 022c100c c1efd780 c1eeba44 00000000 00000000 00000003
    c1b968ec
    Call Trace: [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4178)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef419c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef41b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4278)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef429c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef42b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4378)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef439c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef43b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4478)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef449c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef44b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4578)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef459c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef45b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4678)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef469c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef46b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4778)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef479c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef47b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4878)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef489c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef48b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4978)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef499c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef49b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4a78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4a9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef4ab4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4b78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4b9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef4bb4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4c78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4c9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef4cb4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4d78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4d9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef4db4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4e78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4e9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef4eb4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4f78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef4f9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef4fb4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5078)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef509c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef50b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5178)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef519c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef51b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5278)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef529c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef52b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5378)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef539c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef53b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5478)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef549c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef54b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5578)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef559c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef55b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5678)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef569c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef56b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5778)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef579c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef57b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5878)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef589c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef58b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5978)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef599c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef59b4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5a78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5a9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef5ab4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5b78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5b9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef5bb4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5c78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5c9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef5cb4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5d78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5d9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef5db4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5e78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5e9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef5eb4)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5f78)
    [<c011f640>] do_page_fault [kernel] 0x0 (0xc1ef5f9c)
    [<c011f694>] do_page_fault [kernel] 0x54 (0xc1ef5fb4)

    Code: 8b 82 88 c4 47 c0 8b ba 84 c4 47 c0 01 f8 85 c0 0f 85 46 01

    Kernel panic: Fatal exception

    Any Ideas?
    Thanks.
            -Mark 

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