arrays中的一个硬盘已经死了，我不确定它是raid0还是raid1，我试图实现的是挂载工作驱动器并对剩下的东西进行备份。
如果我挂载/dev/md127那么我只能看到一些grub文件，总大小为100mb。
如果我尝试mount /dev/md1我会得到：
root@rescue:~# mount /dev/md1 /mnt mount: /dev/md1: can't read superblock
一些输出：
root@rescue:~# fdisk -l Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0001f015 Device Boot Start End Blocks Id System /dev/sdb1 * 63 208844 104391 fd Linux raid autodetect /dev/sdb2 208845 16787924 8289540 fd Linux raid autodetect /dev/sdb3 16787925 2930272064 1456742070 fd Linux raid autodetect Disk /dev/md127: 106 MB, 106823680 bytes 2 heads, 4 sectors/track, 26080 cylinders, total 208640 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/md127 doesn't contain a valid partition table root@rescue:~# cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] [faulty] md127 : active raid1 sdb1[1] 104320 blocks [2/1] [_U] unused devices: <none> root@rescue:~# mdadm --examine /dev/sdb2 /dev/sdb2: Magic : a92b4efc Version : 0.90.00 UUID : fca66a1e:c6aba1f7:ace437e0:ae545265 Creation Time : Thu Oct 21 01:57:07 2010 Raid Level : raid0 Raid Devices : 2 Total Devices : 2 Preferred Minor : 1 Update Time : Thu Oct 21 01:57:07 2010 State : active Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Checksum : 6138e9b8 - correct Events : 1 Chunk Size : 256K Number Major Minor RaidDevice State this 1 8 18 1 active sync /dev/sdb2 0 0 8 2 0 active sync 1 1 8 18 1 active sync /dev/sdb2
如果任何人都可以共享，如何正确安装驱动程序，以便能够访问数据（最好在只读模式，所以我不会搞砸任何事情，如果可能的话）…
root@rescue:~# mdadm --examine --scan ARRAY /dev/md127 UUID=0464b5c4:d777ef5e:17b64c46:2e5e61c3 ARRAY /dev/md1 UUID=fca66a1e:c6aba1f7:ace437e0:ae545265 ARRAY /dev/md2 UUID=46c22b6d:dc9668a4:13d0e329:c7b8b0ca
和
root@rescue:~# mdadm --detail /dev/md126 mdadm: cannot open /dev/md126: No such file or directory
和
root@rescue:~/dd_rescue# mdadm --detail /dev/md1 mdadm: md device /dev/md1 does not appear to be active. root@rescue:~/dd_rescue# root@rescue:~/dd_rescue# root@rescue:~/dd_rescue# root@rescue:~/dd_rescue# mdadm --detail /dev/md2 mdadm: md device /dev/md2 does not appear to be active.
聪明
root@rescue:~# smartctl -a /dev/sda smartctl 5.41 2011-06-09 r3365 [i686-linux-3.2.2-xxxx-std-ipv6-32] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: ST_M13FQBL Serial Number: QNR_BFW Firmware Version: 1117F38F User Capacity: 4,142,054,400 bytes [4.14 GB] Sector Size: 512 bytes logical/physical Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 6 ATA Standard is: ATA/ATAPI-6 T13 1410D revision 2 Local Time is: Thu May 16 01:37:37 2013 CEST SMART support is: Available - device has SMART capability. SMART support is: Enabled Error SMART Values Read failed: scsi error aborted command Smartctl: SMART Read Values failed. === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: UNKNOWN! SMART Status, Attributes and Thresholds cannot be read. Error SMART Error Log Read failed: scsi error aborted command Smartctl: SMART Error Log Read Failed Error SMART Error Self-Test Log Read failed: scsi error aborted command Smartctl: SMART Self Test Log Read Failed Device does not support Selective Self Tests/Logging
如果其中一个驱动器死了，您将无法再挂载/ dev / md1 – 您必须在仍然存在的驱动器上挂载一个分区：/ dev / sdb2或/ dev / sdb3
您可以使用mdadm --examine /dev/sdb2获取更多信息
如果sdb2和sdb3运行RAID0，那么这些分区上的所有数据都将丢失。
安装分区时必须指定文件系统types，例如
mount -o ro -t ext3 /dev/sdb2 /mnt
如果你知道它的ext3。 ro – 安装只读。