mdadm --examine显示与--detail不同的东西

我应该信任谁来填写我的/etc/mdadm/mdadm.conf？ mdadm --examine --scan返回，/dev/md/0而显然它/dev/md0正在重建

我应该在/etc/mdadm/mdadm.conf中添加什么？

ARRAY /dev/md0 metadata=1.2 UUID=e7c87d29:37d0d6b4:9a336d4f:0e239a13 name=bigbenn:0

要么

ARRAY /dev/md/0 metadata=1.2 UUID=e7c87d29:37d0d6b4:9a336d4f:0e239a13 name=bigbenn:0

➜  ~  sudo mdadm --detail /dev/md0
[sudo] password for lotso: 
/dev/md0:
    Version : 1.2
  Creation Time : Tue Nov  6 15:41:25 2012
     Raid Level : raid5
     Array Size : 7813527552 (7451.56 GiB 8001.05 GB)
  Used Dev Size : 1953381888 (1862.89 GiB 2000.26 GB)
   Raid Devices : 5
  Total Devices : 5
    Persistence : Superblock is persistent

    Update Time : Sun Dec 14 22:05:35 2014
      State : clean, degraded, recovering 
 Active Devices : 4
Working Devices : 5
 Failed Devices : 0
  Spare Devices : 1

     Layout : left-symmetric
     Chunk Size : 512K

 Rebuild Status : 84% complete

       Name : bigbenn:0  (local to host bigbenn)
       UUID : e7c87d29:37d0d6b4:9a336d4f:0e239a13
     Events : 188171

    Number   Major   Minor   RaidDevice State
       6       8       33        0      spare rebuilding   /dev/sdc1
       7       8       81        1      active sync   /dev/sdf1
       5       8       97        2      active sync   /dev/sdg1
       4       8        1        3      active sync   /dev/sda1
       8       8       49        4      active sync   /dev/sdd1
➜  ~  sudo mdadm --examine --scan 
ARRAY /dev/md/0  metadata=1.2 UUID=e7c87d29:37d0d6b4:9a336d4f:0e239a13 name=bigbenn:0

— euri10
source

$ ls -l /dev/md
total 0
lrwxrwxrwx 1 root root 6 Apr  5  2014 0 -> ../md0
lrwxrwxrwx 1 root root 6 Apr  5  2014 1 -> ../md1
lrwxrwxrwx 1 root root 6 Aug 11 14:20 2 -> ../md2

如您所见，该/dev/md/0条目只是一个符号链接/dev/md0。

似乎mdadm软件更喜欢这种/dev/md/0形式，所以我会选择它。两者都应该有效。

— wurtel
source