Serviços de rede de aplicativos : Mecanismos de cache Cisco 500 Series

Recuperando um disco perdido na matriz de discos do mecanismo de cache da Cisco

19 Setembro 2015 - Tradução por Computador
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Índice


Introdução

Este documento descreve como recuperar um disco dentro de um arranjo de armazenamento que perca seu setor boot no Cisco Cache Engine.

Pré-requisitos

Requisitos

Não existem requisitos específicos para este documento.

Componentes Utilizados

As informações neste documento são baseadas nestas versões de software e hardware:

  • Mecanismo de cache Cisco 590 em um ambiente de laboratório com configurações esclarecida

  • Soquete da interface de sistema de um pequeno computador (SCSI)

  • Arranjo de armazenamento de Cisco

  • Software Cisco Cache versão 2.3

As informações neste documento foram criadas a partir de dispositivos em um ambiente de laboratório específico. Todos os dispositivos utilizados neste documento foram iniciados com uma configuração (padrão) inicial. Se a sua rede estiver ativa, certifique-se de que entende o impacto potencial de qualquer comando.

Convenções

Para obter mais informações sobre convenções de documento, consulte as Convenções de dicas técnicas Cisco.

Como ler a configuração

Nesta configuração, o motor de 590 esconderijos conecta a um arranjo de armazenamento através do soquete scsi. A memória Flash contém o Software Cisco Cache versão 2.3.

Initializing memory.� Please wait. 
Cisco Robin II:� Selected Console. 
BIOS Version: C9 
BIOS Build date: 06/26/00 
Symbios, Inc. SDMS (TM) V4.0 PCI SCSI BIOS, PCI Rev. 2.0, 2.1 
Copyright 1995, 1998 Symbios, Inc. 
PCI-4.11.00 

HBA ID LUN VENDOR�� PRODUCT��������� REV� SYNC WIDE INT13� CYL/ HD/SEC 
--- -- --- -------- ---------------- ---- ---- ---- ----- ------------ 
�0�� 0� 0� IBM����� DMVS18D��������� 0100 80.0� 16�� BOOT 1024/255/63 
�0�� 1� 0� QUANTUM� VIKING II 9.1SCA 5520 80.0� 16�� 81h� 1024/255/63 
�0�� 7� 0� Symbios� SYM53C895������� 0002 80.0� 16 
�0�� 8� 0� SEAGATE� ST318404LC������ 0002� NO�� 16�� 82h� 1024/255/63 
�0�� 9� 0� SEAGATE� ST318404LC������ 0002� NO�� 16�� 83h� 1024/255/63 
�0� 10� 0� SEAGATE� ST318404LC������ 0002� NO�� 16�� 84h� 1024/255/63 
�0� 11� 0� SEAGATE� ST318404LC������ 0002� NO�� 16�� 85h� 1024/255/63 
�0� 12� 0� SEAGATE� ST318404LC������ 0002� NO�� 16�� 86h� 1024/255/63 
�0� 13� 0� SEAGATE� ST318404LC������ 0002� NO�� 16�� 87h� 1024/255/63 
�0� 15� 0� EuroLogc ESM 0205� NO��� 8

O motor BIOS do esconderijo vê todos os discos rígidos do arranjo de armazenamento:

Symbios, Inc. PCI boot ROM successfully installed! 
Cisco CE Booting From Flash. 

Cisco Cache Engine Boot.  Version: 5.3.1 
Creation date: May  2 2000, 11:49:05 

Press any key to stop auto-boot... 
 0 
auto-booting... 

 boot device (flash,net) [            flash]: 
           ;     file name [ ce590-cache-230.bin]: 
        cache IP address [      172.17.241.108]: 
         IP network mask [       255.255.255.0]: 
       server IP address [      172.17.247.195]: 
      gateway IP address [        172.17.241.1]: 
 protocol (rcp,ftp,tftp) [            tftp]: 
           ;      username [           anonymous]: 
           ;      password [       gfa@cisco.com]: 
           ;         flags [            0]: 

Starting at 0x108000... 

#!ImageInfo 
# 
#    +--------------------+ 
#    |   CISCO CE image   | 
#    +--------------------+ 
# 
SUPPORTED_PRODUCTS=CE590 
UNCOMPRESSED_CKSUM=0x6925ea3 
UNCOMPRESSED_SIZE=0x355198 
COMPRESSED_CKSUM=0x9199a6d6 
COMPRESSED_SIZE=0x167175 
# 

Self decompressing the image : ###########################################################################
######################### [OK] 
Launching the image, please wait... 
.................. 

Console IO Initialized 
Attaching network interface lo0... done. 
 

           ;    Restricted Rights Legend 


Use, duplication, or disclosure by the Government is 
subject to restrictions as set forth in subparagraph 
(c) of the Commercial Computer Software - Restricted 
Rights clause module_register_init name sym func 0x1ecdf8 data 0x44bb94 
acompat_pci_handler: sym probing... 
895: found 
t Fsym0: No NVRAM, ID 7, Fast-40, LVD, parity checking 
AR sec. 52.227-19 and subparagraph 
(c) (1) (ii) of the Rights in Technical Data and Computer 
Software clause at DFARS sec. 252.227-7013. 

           ; Cisco Systems, Inc. 
           ; 170 West Tasman Drive 
           ; San Jose, California 95134-1706 

Cisco Content Engine 
Copyright (c) 1986-2000 by Cisco Systems, Inc. 
Software Release: CE ver 2.30 (Build: FCS  11/09/00) 
Compiled: 19:57:30 Nov  9 2000 by bbalagot 
Image text-base 0x108000, data_base 0x43515c 

System restarted by Power Up 
The system has been up for 6 seconds. 
System booted from "flash" 

SVCINIT - phase complete 
895: attached unit 0 
Waiting 2 seconds for SCSI devices to settle 
pt0 at sym0 bus 0 target 15 lun 0 
pt0: <EuroLogc ESM 0205> Removable Processor SCSI-3 device 
pt0: 3.300MB/s transfers 
da0 at sym0 bus 0 target 0 lun 0 
da0: <IBM DMVS18D 0100> Fixed Direct Access SCSI-3 device 
da0: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da0: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) 
da1 at sym0 bus 0 target 1 lun 0 
da1: <QUANTUM VIKING II 9.1SCA 5520>Fixed Direct Access SCSI-2 device 
da1: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da1: 8709MB (17836668 512 byte sectors: 255H 63S/T 1110C)

Esta lista contém todos os discos rígidos do arranjo de armazenamento que o driver SCSI do motor do esconderijo encontra:

da6 at sym0 bus 0 target 12 lun 0 
da6: <SEAGATE ST318404LC 0002> Fixed Direct Access SCSI-3 device 
da6: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da6: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) 
da5 at sym0 bus 0 target 11 lun 0 
da5: <SEAGATE ST318404LC 0002> Fixed Direct Access SCSI-3 device 
da5: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da5: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) 
da4 at sym0 bus 0 target 10 lun 0 
da4: <SEAGATE ST318404LC 0002> Fixed Direct Access SCSI-3 device 
da4: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da4: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) 
da3 at sym0 bus 0 target 9 lun 0 
da3: <SEAGATE ST318404LC 0002> Fixed Direct Access SCSI-3 device 
da3: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da3: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) 
da2 at sym0 bus 0 target 8 lun 0 
da2: <SEAGATE ST318404LC 0002> Fixed Direct Access SCSI-3 device 
da2: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da2: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C) 
da7 at sym0 bus 0 target 13 lun 0 
da7: <SEAGATE ST318404LC 0002> Fixed Direct Access SCSI-3 device 
da7: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing En 
da7: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C)

Todas as movimentações são reconhecidas corretamente. Abaixo, a linha no negrito indica que o sistema operacional tem um problema com a montagem de /c0t4d0s3. A estrutura lógica do disco rígido foi corrompida.

SCSI initialization complete 
DEVINIT - phase complete 
FSINIT - phase complete 
Configuring from NVRAM... 
Attaching network interface fei0... done. 

It is recommended to set restrictions that allow or deny HTTPS traffic to 
Destination Ports. Default settings may not provide the desired security le 

----------------------------------------------------------- ----------- 
"admin" super-user account is NOT password protected 
SECURITY ALERT: Please password protect the above super-user accounts! 
----------------------------------------------------------- ----------- 
CONF - phase complete 
NTP: Waiting (2 minutes) for network initialization 
SNMP: Waiting (2 minutes) for network initialization 
Fri Mar 24 13:31:00 2000: CFS volume /c0t4d0s3 mount failed S_partlib_INVALOTSECT 
Fri Mar 24 13:31:00 2000: dns-cache turned ONLINE due to dependency on nameer 

Aqui, o texto no negrito indica que o setor boot deste disco está perdido. Não há estrutura de partição.

START - phase complete 

Username: admin 
Password: 
Please set a password for this user account to aid security! 
disaster# show disks 
�����/c0t0d0� (scsi bus 0, unit 0, lun 0) 
�����/c0t1d0� (scsi bus 0, unit 1, lun 0) 
�����/c0t2d0� (scsi bus 0, unit 2, lun 0) 
�����/c0t3d0� (scsi bus 0, unit 3, lun 0) 
�����/c0t4d0� (scsi bus 0, unit 4, lun 0) 
�����/c0t5d0� (scsi bus 0, unit 5, lun 0) 
�����/c0t6d0� (scsi bus 0, unit 6, lun 0) 
�����/c0t7d0� (scsi bus 0, unit 7, lun 0) 
disaster# show disk-parti /c0t2d0 
Disk size� : 35843670 sectors 
Partition 1: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
Partition 2: CISCO_BFS_1,�� offset������� 10 sectors, size����� 1024 sector 
Partition 3: CISCO_CFS_1,�� offset����� 1044 sectors, size� 35842616 sector 
Partition 4: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
disaster# show disk-parti /c0t3d0 
Disk size� : 35843670 sectors 
Partition 1: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
Partition 2: CISCO_BFS_1,�� offset������� 10 sectors, size����� 1024 sector 
Partition 3: CISCO_CFS_1,�� offset����� 1044 sectors, size� 35842616 sector 
Partition 4: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
disaster# show disk-parti /c0t4d0 
Unable to show disk partitions for /c0t4d0, errno S_partlib_INVALID_BOOTSEC
�
disaster# show disk-parti /c0t5d0 
Disk size� : 35843670 sectors 
Partition 1: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
Partition 2: CISCO_BFS_1,�� offset������� 10 sectors, size����� 1024 sector 
Partition 3: CISCO_CFS_1,�� offset����� 1044 sectors, size� 35842616 sector 
Partition 4: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
disaster# show disk-parti /c0t6d0 
Disk size� : 35843670 sectors 
Partition 1: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
Partition 2: CISCO_BFS_1,�� offset������� 10 sectors, size����� 1024 sector 
Partition 3: CISCO_CFS_1,�� offset����� 1044 sectors, size� 35842616 sector 
Partition 4: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
disaster# show disk-parti /c0t7d0 
Disk size� : 35843670 sectors 
Partition 1: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
Partition 2: CISCO_BFS_1,�� offset������� 10 sectors, size����� 1024 sector 
Partition 3: CISCO_CFS_1,�� offset����� 1044 sectors, size� 35842616 sector 
Partition 4: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 

Você precisa de recrear a estrutura do diretório com o comando disk manufature. Este comando flexível cria a estrutura do diretório direita. Também, quando você o usa em /c0t0d0, cria o sistema de arquivos DOS também.

disaster# disk manufacture /c0t4d0
total size of disk = 35843670 
CISCO_UVFAT_1 vol /c0t4d0s1 part_off 0 part_siz 0 
Skipping creation of DOS partition for SCSI device 

A separação DOS é saltada porque não é necessário.

CISCO_BFS_1 vol /c0t4d0s2 part_off 10 part_siz 1024 
CISCO_CFS_1 vol /c0t4d0s3 part_off 1044 part_siz 35842616 
disaster#sho disk-parti /c0t4d0 
Disk size� : 35843670 sectors 
Partition 1: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 
Partition 2: CISCO_BFS_1,�� offset������� 10 sectors, size����� 1024 sector 
Partition 3: CISCO_CFS_1,�� offset����� 1044 sectors, size� 35842616 sector 
Partition 4: UNUSED,������� offset�������� 0 sectors, size�������� 0 sector 

O disco rígido com falha retornou on-line.

Filesystem Statistics for volume /c0t4d0s3�� Status: mounted 
����Data Bytes Max����� 17907227 KB 
����Data Bytes Used����������� 0 KB ( 0% full) 
����Disk Wraps 0 
����Inode Hits 0 
����Inode Misses 0 
����CFS Read error 0 
����CFS Write error 0 
����Inode Load error 0 
����Attribute Load error 0 
����CFS Object Truncations 0 
����Truncated CFS Object Flushes 0 
����Volume Clears 0 
����Format time�� Fri Mar 24 13:33:21 2000 
����Mount time��� Fri Mar 24 13:33:44 2000 
����Unmount time� Fri Mar 24 13:33:19 2000 

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Document ID: 12562