Chinaunix

标题: debian(squeeze)mdadm建立的raid崩溃求助 [打印本页]
作者: ljwsy    时间: 2015-11-12 12:20
标题: debian(squeeze)mdadm建立的raid崩溃求助
debian squeeze的系统，用mdadm建立raid1，跑有近两年无问题。前两天感觉不对去终端看发现报有fs inode方面的错误一大堆（具体没记下来），登陆不行，热键启动不行……只有强断电，然后就再也启不了。启动报错为文件系统错误。

这是另一台类似机上的环境：
  1. root@s-ii:~# uname -a
  2. Linux s-ii 2.6.32-5-686-bigmem #1 SMP Sun Sep 23 10:27:25 UTC 2012 i686 GNU/Linux

  4. root@s-ii:~# df -h
  5. Filesystem            Size  Used Avail Use% Mounted on
  6. /dev/md0              942M  578M  317M  65% /
  7. tmpfs                 4.0G     0  4.0G   0% /lib/init/rw
  8. udev                  4.0G  280K  4.0G   1% /dev
  9. tmpfs                 4.0G     0  4.0G   0% /dev/shm
  10. /dev/md3              312G   25G  272G   9% /home
  11. /dev/md5              110G   72G   34G  69% /mnt/nxp/disk
  12. /dev/md8               36G  177M   34G   1% /mnt/nxp/swap
  13. /dev/md7               37G  177M   35G   1% /mnt/nxp/user
  14. /dev/md6               19G  253M   18G   2% /mnt/nxp/wks
  15. /dev/md2              1.9G   35M  1.8G   2% /tmp
  16. /dev/md4               19G  898M   17G   6% /usr
  17. /dev/md1               12G  773M  9.7G   8% /var


  20. root@s-ii:~# cat /proc/mdstat
  21. Personalities : [raid0] [raid1]
  22. md8 : active raid0 sda13[0] sdb13[3] sda14[2] sdb14[1]
  23.       37302528 blocks 64k chunks
  24.       
  25. md7 : active raid0 sda11[0] sdb11[3] sda12[2] sdb12[1]
  26.       39069696 blocks 64k chunks
  27.       
  28. md6 : active raid0 sda10[0] sdb10[1]
  29.       19534848 blocks 64k chunks
  30.       
  31. md5 : active raid0 sda8[0] sdb8[3] sda9[2] sdb9[1]
  32.       117177600 blocks 64k chunks
  33.       
  34. md4 : active raid1 sda7[0] sdb7[1]
  35.       19534912 blocks [2/2] [UU]
  36.       
  37. md3 : active raid1 sda6[0] sdb6[1]
  38.       332031296 blocks [2/2] [UU]
  39.       
  40. md2 : active raid1 sda5[0] sdb5[1]
  41.       1951744 blocks [2/2] [UU]
  42.       
  43. md1 : active raid1 sda3[0] sdb3[1]
  44.       11719296 blocks [2/2] [UU]
  45.       
  46. md0 : active raid1 sda1[0] sdb1[1]
  47.       979840 blocks [2/2] [UU]
  48.       
  49. unused devices: <none>


复制代码
为了要出里面的数据，新做了一台debian _Jessie_，挂上一只坏盘，这是分区情况：
  1. root@ljwsy:~# fdisk -l /dev/sdc

  3. Disk /dev/sdc: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
  4. Units: sectors of 1 * 512 = 512 bytes
  5. Sector size (logical/physical): 512 bytes / 4096 bytes
  6. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  7. Disklabel type: dos
  8. Disk identifier: 0x00017d93

  10. Device     Boot     Start        End    Sectors   Size Id Type
  11. /dev/sdc1  *           63    1959929    1959867   957M 83 Linux
  12. /dev/sdc2         1959930   17591174   15631245   7.5G 82 Linux swap / Solaris
  13. /dev/sdc3        17591175   56661254   39070080  18.6G 83 Linux
  14. /dev/sdc4        56661255 1953520064 1896858810 904.5G  5 Extended
  15. /dev/sdc5        56661318   60565049    3903732   1.9G 83 Linux
  16. /dev/sdc6        60565113   78140159   17575047   8.4G 83 Linux
  17. /dev/sdc7        78140223   97675199   19534977   9.3G 83 Linux
  18. /dev/sdc8        97675263  839862134  742186872 353.9G 83 Linux
  19. /dev/sdc9       839862198 1953520064 1113657867   531G 83 Linux



复制代码
然后加个新盘多方尝试不成功（下面的md0是拿来试水的，其他区没动）,sdb是新盘：

  2. root@ljwsy:~# cat /proc/mdstat
  3. Personalities : [raid1]
  4. md0 : active raid1 sdc1[2] sdb1[0]
  5.       979392 blocks super 1.2 [2/2] [UU]
  6.       
  7. md3 : inactive sdc6[2](S)
  8.       8786499 blocks super 1.2
  9.       
  10. md6 : inactive sdc9[2](S)
  11.       556827909 blocks super 1.2
  12.       
  13. md1 : inactive sdc3[2](S)
  14.       19534016 blocks super 1.2
  15.       
  16. md2 : inactive sdc5[2](S)
  17.       1950842 blocks super 1.2
  18.       
  19. md5 : inactive sdc8[2](S)
  20.       371092412 blocks super 1.2
  21.       
  22. md4 : inactive sdc7[2](S)
  23.       9766464 blocks super 1.2
  24.       
  25. unused devices: <none>

  27. root@ljwsy:~# mdadm -E /dev/sdc1
  28. /dev/sdc1:
  29.           Magic : a92b4efc
  30.         Version : 1.2
  31.     Feature Map : 0x0
  32.      Array UUID : f9d4b320:c4922ad9:17645e56:897e8cb5
  33.            Name : ljwsy:0  (local to host ljwsy)
  34.   Creation Time : Thu Nov 12 11:21:59 2015
  35.      Raid Level : raid1
  36.    Raid Devices : 2

  38. Avail Dev Size : 1958811 (956.61 MiB 1002.91 MB)
  39.      Array Size : 979392 (956.60 MiB 1002.90 MB)
  40.   Used Dev Size : 1958784 (956.60 MiB 1002.90 MB)
  41.     Data Offset : 1056 sectors
  42.    Super Offset : 8 sectors
  43.    Unused Space : before=968 sectors, after=27 sectors
  44.           State : clean
  45.     Device UUID : 4145857f:81c186e8:0a782966:e12dfc71

  47.     Update Time : Thu Nov 12 11:22:40 2015
  48.   Bad Block Log : 512 entries available at offset 72 sectors
  49.        Checksum : f57c2b1 - correct
  50.          Events : 19


  53.    Device Role : Active device 1
  54.    Array State : AA ('A' == active, '.' == missing, 'R' == replacing)

  56. root@ljwsy:~# mdadm -E /dev/sdb1
  57. /dev/sdb1:
  58.           Magic : a92b4efc
  59.         Version : 1.2
  60.     Feature Map : 0x0
  61.      Array UUID : f9d4b320:c4922ad9:17645e56:897e8cb5
  62.            Name : ljwsy:0  (local to host ljwsy)
  63.   Creation Time : Thu Nov 12 11:21:59 2015
  64.      Raid Level : raid1
  65.    Raid Devices : 2

  67. Avail Dev Size : 1958880 (956.64 MiB 1002.95 MB)
  68.      Array Size : 979392 (956.60 MiB 1002.90 MB)
  69.   Used Dev Size : 1958784 (956.60 MiB 1002.90 MB)
  70.     Data Offset : 1056 sectors
  71.    Super Offset : 8 sectors
  72.    Unused Space : before=968 sectors, after=96 sectors
  73.           State : clean
  74.     Device UUID : 8c21a15c:dad6feed:64f78efc:c6a07396

  76.     Update Time : Thu Nov 12 11:22:40 2015
  77.   Bad Block Log : 512 entries available at offset 72 sectors
  78.        Checksum : acc8a6d7 - correct
  79.          Events : 19


  82.    Device Role : Active device 0
  83.    Array State : AA ('A' == active, '.' == missing, 'R' == replacing)

复制代码
挂接时：

  2. root@ljwsy:~# mount /dev/md0 /mnt/tmp
  3. mount: wrong fs type, bad option, bad superblock on /dev/md0,
  4.        missing codepage or helper program, or other error

  6.        In some cases useful info is found in syslog - try
  7.        dmesg | tail or so.

复制代码
按其提示dmesg没见有异常。

再来，针对没动过的区：

  2. root@ljwsy:~# mdadm -E /dev/sdc3
  3. /dev/sdc3:
  4.           Magic : a92b4efc
  5.         Version : 1.2
  6.     Feature Map : 0x0
  7.      Array UUID : 70b21eb6:3fb9ddaa:e06afa2a:236955e2
  8.            Name : wb:1
  9.   Creation Time : Tue Jan 15 20:25:33 2013
  10.      Raid Level : raid1
  11.    Raid Devices : 2

  13. Avail Dev Size : 39068032 (18.63 GiB 20.00 GB)
  14.      Array Size : 19533944 (18.63 GiB 20.00 GB)
  15.   Used Dev Size : 39067888 (18.63 GiB 20.00 GB)
  16.     Data Offset : 2048 sectors
  17.    Super Offset : 8 sectors
  18.    Unused Space : before=1968 sectors, after=144 sectors
  19.           State : clean
  20.     Device UUID : ec182df4:009d6cb4:b71fa16a:a5d02009

  22.     Update Time : Wed Nov 11 09:03:16 2015
  23.        Checksum : 10eec90d - correct
  24.          Events : 1804


  27.    Device Role : Active device 0
  28.    Array State : AA ('A' == active, '.' == missing, 'R' == replacing)
  29. root@ljwsy:~# mdadm -D /dev/md1
  30. /dev/md1:
  31.         Version : 1.2
  32.      Raid Level : raid0
  33.   Total Devices : 1
  34.     Persistence : Superblock is persistent

  36.           State : inactive

  38.            Name : wb:1
  39.            UUID : 70b21eb6:3fb9ddaa:e06afa2a:236955e2
  40.          Events : 1804

  42.     Number   Major   Minor   RaidDevice

  44.        -       8       35        -        /dev/sdc3

  46. root@ljwsy:~# mount /dev/md1 /mnt/tmp
  47. mount: wrong fs type, bad option, bad superblock on /dev/md1,
  48.        missing codepage or helper program, or other error

  50.        In some cases useful info is found in syslog - try
  51.        dmesg | tail or so.

  53. root@ljwsy:~# dmesg
  54. ……
  55. [ 3691.999867] EXT4-fs (md1): unable to read superblock
  56. [ 3691.999955] EXT4-fs (md1): unable to read superblock
  57. [ 3692.000533] EXT4-fs (md1): unable to read superblock
  58. root@ljwsy:~# fsck.ext3 /dev/md1
  59. e2fsck 1.42.12 (29-Aug-2014)
  60. fsck.ext3: Invalid argument while trying to open /dev/md1

  62. The superblock could not be read or does not describe a valid ext2/ext3/ext4
  63. filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
  64. filesystem (and not swap or ufs or something else), then the superblock
  65. is corrupt, and you might try running e2fsck with an alternate superblock:
  66.     e2fsck -b 8193 <device>
  67. or
  68.     e2fsck -b 32768 <device>
  69. root@ljwsy:~# e2fsck -b 8193 /dev/md1
  70. e2fsck 1.42.12 (29-Aug-2014)
  71. e2fsck: Invalid argument while trying to open /dev/md1

  73. The superblock could not be read or does not describe a valid ext2/ext3/ext4
  74. filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
  75. filesystem (and not swap or ufs or something else), then the superblock
  76. is corrupt, and you might try running e2fsck with an alternate superblock:
  77.     e2fsck -b 8193 <device>
  78. or
  79.     e2fsck -b 32768 <device>


复制代码
没思路了，哪位同学指点一二，非常感谢你们的帮助。
作者: EeeLo    时间: 2015-12-18 10:23
我感觉文件系统崩溃主要跟你强制断电原因关系比较大，我一次也是强制断电，文件系统就崩溃了。
具体怎么恢复不太懂
作者: ljwsy    时间: 2015-12-22 11:08
回复 2# EeeLo


    是跟断电相关。昨天的０点左右机房断电，６:１０又来电，问电工及其他人，回答是没人动过。心中暗想：机房有女鬼，这是第二次了，吓死宝宝！！！中午正在做工突然UPS又叫，打电话给电工，他们也是没有什么动作，开灯一看，有电。晕，闸没跳呀。拉闸再上，电正常了。原来没有女鬼，失望之中……




欢迎光临 Chinaunix (http://bbs.chinaunix.net/) Powered by Discuz! X3.2