我的linux服务器需要一个多小时才能启动.建议？

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前端之家收集整理的这篇文章主要介绍了我的linux服务器需要一个多小时才能启动.建议？，前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。
我正在构建一个CentOS 5.4系统,该系统使用模拟IDE驱动器的读卡器启动紧凑型闪存卡.它真的需要一个小时才能启动.当Grub加载内核时会发生超慢速部分.完成后,其余的启动过程只需大约一分钟即可到达登录提示.有没有人有什么建议？

我怀疑它可能与UDMA有关.我的BIOS中与IDE相关的所有内容似乎都要结帐.读取性能hdparm告诉我1.77 MB / s.哎哟! (但即使按照这个速度,它仍然不需要一个小时来解压缩并加载内核)

  1. [root@server ~]# hdparm -tT /dev/hdc
  2.  
  3. /dev/hdc:
  4.  Timing cached reads:   2444 MB in  2.00 seconds = 1222.04 MB/sec
  5.  Timing buffered disk reads:    6 MB in  3.39 seconds =   1.77 MB/sec

尝试启用DMA是不可取的：

  1. [root@server ~]# hdparm -d1 /dev/hdc
  2.  
  3. /dev/hdc:
  4.  setting using_dma to 1 (on)
  5.  Hdio_SET_DMA Failed: Operation not permitted
  6.  using_dma    =  0 (off)

以下是一些可能有用的命令输出：

系统

  1. [root@server ~]# uname -a
  2. Linux server.localdomain 2.6.18-164.el5xen #1 SMP Thu Sep 3 04:47:32 EDT 2009 i686 i686 i386 GNU/Linux

PCI信息：

  1. [root@server ~]# lspci -v
  2. 00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
  3.         Subsystem: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub
  4.         Flags: bus master,fast devsel,latency 0
  5.         Capabilities: [e0] Vendor Specific Information
  6.  
  7. 00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
  8.         Subsystem: Intel Corporation 82945G/GZ Integrated Graphics Controller
  9.         Flags: bus master,latency 0,IRQ 10
  10.         Memory at fdf00000 (32-bit,non-prefetchable) [size=512K]
  11.         I/O ports at ff00 [size=8]
  12.         Memory at d0000000 (32-bit,prefetchable) [size=256M]
  13.         Memory at fdf80000 (32-bit,non-prefetchable) [size=256K]
  14.         Capabilities: [90] Message Signalled Interrupts: 64bit- Queue=0/0 Enable-
  15.         Capabilities: [d0] Power Management version 2
  16.  
  17. 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01) (prog-if 00 [UHCI])
  18.         Subsystem: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1
  19.         Flags: bus master,medium devsel,IRQ 16
  20.         I/O ports at fe00 [size=32]
  21.  
  22. 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01) (prog-if 00 [UHCI])
  23.         Subsystem: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2
  24.         Flags: bus master,IRQ 17
  25.         I/O ports at fd00 [size=32]
  26.  
  27. 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01) (prog-if 00 [UHCI])
  28.         Subsystem: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3
  29.         Flags: bus master,IRQ 18
  30.         I/O ports at fc00 [size=32]
  31.  
  32. 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01) (prog-if 00 [UHCI])
  33.         Subsystem: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4
  34.         Flags: bus master,IRQ 19
  35.         I/O ports at fb00 [size=32]
  36.  
  37. 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) (prog-if 20 [EHCI])
  38.         Subsystem: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller
  39.         Flags: bus master,IRQ 16
  40.         Memory at fdfff000 (32-bit,non-prefetchable) [size=1K]
  41.         Capabilities: [50] Power Management version 2
  42.         Capabilities: [58] Debug port
  43.  
  44. 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) (prog-if 01 [Subtractive decode])
  45.         Flags: bus master,latency 0
  46.         Bus: primary=00,secondary=01,subordinate=01,sec-latency=32
  47.         I/O behind bridge: 0000d000-0000dfff
  48.         Memory behind bridge: fde00000-fdefffff
  49.         Prefetchable memory behind bridge: 00000000fdd00000-00000000fdd00000
  50.         Capabilities: [50] #0d [0000]
  51.  
  52. 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
  53.         Subsystem: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge
  54.         Flags: bus master,latency 0
  55.         Capabilities: [e0] Vendor Specific Information
  56.  
  57. 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01) (prog-if 80 [Master])
  58.         Subsystem: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller
  59.         Flags: bus master,66MHz,IRQ 17
  60.         I/O ports at <unassigned>
  61.         I/O ports at <unassigned>
  62.         I/O ports at <unassigned>
  63.         I/O ports at <unassigned>
  64.         I/O ports at f800 [size=16]
  65.         Capabilities: [70] Power Management version 2
  66.  
  67. 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
  68.         Subsystem: Intel Corporation 82801G (ICH7 Family) SMBus Controller
  69.         Flags: medium devsel,IRQ 17
  70.         I/O ports at 0500 [size=32]
  71.  
  72. 01:04.0 Ethernet controller: Realtek Semiconductor Co.,Ltd. RTL-8139/8139C/8139C+ (rev 10)
  73.         Subsystem: Realtek Semiconductor Co.,Ltd. RTL-8139/8139C/8139C+
  74.         Flags: bus master,latency 32,IRQ 18
  75.         I/O ports at de00 [size=256]
  76.         Memory at fdeff000 (32-bit,non-prefetchable) [size=256]
  77.         Capabilities: [50] Power Management version 2
  78.  
  79. 01:06.0 Ethernet controller: Realtek Semiconductor Co.,IRQ 17
  80.         I/O ports at dc00 [size=256]
  81.         Memory at fdefe000 (32-bit,non-prefetchable) [size=256]
  82.         Capabilities: [50] Power Management version 2
  83.  
  84. 01:07.0 Ethernet controller: Realtek Semiconductor Co.,IRQ 19
  85.         I/O ports at da00 [size=256]
  86.         Memory at fdefd000 (32-bit,non-prefetchable) [size=256]
  87.         Capabilities: [50] Power Management version 2

hdparm输出：

  1. [root@server ~]# hdparm  /dev/hdc   
  2.  
  3. /dev/hdc:
  4.  multcount    =  0 (off)
  5.  IO_support   =  0 (default 16-bit)
  6.  unmaskirq    =  0 (off)
  7.  using_dma    =  0 (off)
  8.  keepsettings =  0 (off)
  9.  readonly     =  0 (off)
  10.  readahead    = 256 (on)
  11.  geometry     = 8146/16/63,sectors = 8211168,start = 0
  12.  
  13. [root@server ~]# hdparm -I /dev/hdc
  14.  
  15. /dev/hdc:
  16.  
  17. ATA device,with non-removable media
  18.         Model Number:       InnoDisk Corp. - iCF4000 4GB            
  19.         Serial Number:      20091023AACA70000753
  20.         Firmware Revision:  081107  
  21. Standards:
  22.         Supported: 5 
  23.         Likely used: 6
  24. Configuration:
  25.         Logical         max     current
  26.         cylinders       8146    8146
  27.         heads           16      16
  28.         sectors/track   63      63
  29.         --
  30.         CHS current addressable sectors:    8211168
  31.         LBA    user addressable sectors:    8211168
  32.         device size with M = 1024*1024:        4009 MBytes
  33.         device size with M = 1000*1000:        4204 MBytes (4 GB)
  34. Capabilities:
  35.         LBA,IORDY(can be disabled)
  36.         Standby timer values: spec'd by Vendor
  37.         R/W multiple sector transfer: Max = 2   Current = 2
  38.         DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 
  39.              Cycle time: min=120ns recommended=120ns
  40.         PIO: pio0 pio1 pio2 pio3 pio4 
  41.              Cycle time: no flow control=120ns  IORDY flow control=120ns
  42. Commands/features:
  43.         Enabled Supported:
  44.            *    Power Management feature set
  45.            *    WRITE_BUFFER command
  46.            *    READ_BUFFER command
  47.            *    NOP cmd
  48.            *    CFA feature set
  49.            *    Mandatory FLUSH_CACHE
  50. HW reset results:
  51.         CBLID- above Vih
  52.         Device num = 0
  53. CFA power mode 1:
  54.         enabled and required by some commands
  55.         Maximum current = 100ma
  56. Checksum: correct

编辑：大约需要5分钟才能通过“GRUB loading stage 2 …”消息.我得出结论,问题可能是：bootloader,BIOS /固件或硬件问题.我玩了所有相关的BIOS设置没有任何运气,并取代我的IDE电缆,以防我有一个坏的.我订购了一个新的紧凑型闪存卡(一个不同的品牌),但它会在它到达之前的几天.我目前还在运行Memtest86,看看我的内存是否有奇怪的问题.完成后,我会看看我的主板是否有可用的固件更新.

解决方法

问题解决了！

奇怪的是,在BIOS中禁用UDMA修复了问题.

感谢this Ubuntu thread获得答案.并感谢大家在这里提出的建议！

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