我有问题试图带回一个RAID5 3磁盘arrays，看来2个磁盘过时了。
root@mindstorm4: mdadm -E /dev/sd[bcd] /dev/sdb: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : 6a243319:84b8f9a9:355f027e:58b8a6fb Name : md_stripey Creation Time : Sun Feb 23 22:08:02 2014 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 3907028992 (1863.02 GiB 2000.40 GB) Array Size : 3907028992 (3726.03 GiB 4000.80 GB) Data Offset : 16 sectors Super Offset : 8 sectors Unused Space : before=0 sectors, after=160 sectors State : clean Device UUID : 7299f928:b1105a5c:f89d8600:0f944324 Update Time : Sun Jun 5 09:43:12 2016 Checksum : efcdeccc - correct Events : 4375 Layout : parity-last Chunk Size : 512K Device Role : Active device 0 Array State : AAA ('A' == active, '.' == missing, 'R' == replacing) /dev/sdc: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : 6a243319:84b8f9a9:355f027e:58b8a6fb Name : md_stripey Creation Time : Sun Feb 23 22:08:02 2014 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 3907028992 (1863.02 GiB 2000.40 GB) Array Size : 3907028992 (3726.03 GiB 4000.80 GB) Data Offset : 16 sectors Super Offset : 8 sectors Unused Space : before=0 sectors, after=160 sectors State : clean Device UUID : f403f8da:b4eec381:fbcf9628:b562ad94 Update Time : Wed Feb 1 00:15:25 2017 Checksum : 60f42d25 - correct Events : 574913 Layout : parity-last Chunk Size : 512K Device Role : Active device 2 Array State : ..A ('A' == active, '.' == missing, 'R' == replacing) /dev/sdd: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : 6a243319:84b8f9a9:355f027e:58b8a6fb Name : md_stripey Creation Time : Sun Feb 23 22:08:02 2014 Raid Level : raid5 Raid Devices : 3 Avail Dev Size : 3907028992 (1863.02 GiB 2000.40 GB) Array Size : 3907028992 (3726.03 GiB 4000.80 GB) Data Offset : 16 sectors Super Offset : 8 sectors Unused Space : before=0 sectors, after=160 sectors State : active Device UUID : a69bf0c5:49d75e40:2ad555a4:fe6d68c3 Update Time : Wed Feb 1 00:13:22 2017 Checksum : b504bd62 - correct Events : 574909 Layout : parity-last Chunk Size : 512K Device Role : Active device 1 Array State : .AA ('A' == active, '.' == missing, 'R' == replacing) 当我尝试激活时;
root@mindstorm4: mdadm -A --scan -v mdadm: looking for devices for further assembly <snip> mdadm: no RAID superblock on /dev/sda mdadm: /dev/sdd is identified as a member of /dev/md/md_stripey_0, slot 1. mdadm: /dev/sdc is identified as a member of /dev/md/md_stripey_0, slot 2. mdadm: /dev/sdb is identified as a member of /dev/md/md_stripey_0, slot 0. mdadm: added /dev/sdb to /dev/md/md_stripey_0 as 0 (possibly out of date) mdadm: added /dev/sdd to /dev/md/md_stripey_0 as 1 (possibly out of date) mdadm: added /dev/sdc to /dev/md/md_stripey_0 as 2 mdadm: /dev/md/md_stripey_0 assembled from 1 drive - not enough to start the array. mdadm: looking for devices for further assembly mdadm: No arrays found in config file or automatically
但是，设备文件/ dev / md / md_stripey_0不存在，所以我不能使用–detail检出数组状态。
此外，我担心运行mdadm -A --force ...因为手册页说这是潜在的破坏性。