试图将两个磁盘从raid1更改为raid0我将其中一个从arrays中删除后标记为失败，后来因为我不能删除第二个我有坏的想法，通过Webpipe理器重新安装的Linux映像。 我通过腻子访问服务器，没有物理访问。
结果：现在我只能在救援模式下访问shell。 还没有find任何方法来重新添加删除的磁盘。 几乎所有我尝试返回一个“设备忙”类错误消息。
这里有一些输出：
root@rescue ~ # cat /proc/mdstat Personalities : [raid1] [raid0] md3 : inactive sdb4[0] sda4[1](S) 3694957447 blocks super 1.2 md2 : active raid1 sdb3[0] sda3[1] 1073610752 blocks super 1.2 [2/2] [UU] bitmap: 0/8 pages [0KB], 65536KB chunk md1 : active raid1 sdb2[0] sda2[1] 523712 blocks super 1.2 [2/2] [UU] md0 : active raid1 sdb1[0] sda1[1] 8380416 blocks super 1.2 [2/2] [UU] unused devices: <none> root@rescue ~ # mdadm --detail /dev/md3 /dev/md3: Version : 1.2 Creation Time : Sat Feb 11 21:04:29 2017 Raid Level : raid0 Raid Devices : 1 Total Devices : 2 Persistence : Superblock is persistent Update Time : Sat Feb 18 23:50:30 2017 State : active, Not Started Active Devices : 1 Working Devices : 2 Failed Devices : 0 Spare Devices : 1 Chunk Size : 64K Name : rescue:3 (local to host rescue) UUID : 22a8c922:44560691:9e731044:73ff2645 Events : 4390 Number Major Minor RaidDevice State 0 8 20 0 active sync /dev/sdb4 1 8 4 - spare /dev/sda4 root@rescue ~ # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdb 8:16 0 2.7T 0 disk ├─sdb4 8:20 0 1.7T 0 part ├─sdb2 8:18 0 512M 0 part │ └─md1 9:1 0 511.4M 0 raid1 ├─sdb5 8:21 0 1M 0 part ├─sdb3 8:19 0 1T 0 part │ └─md2 9:2 0 1023.9G 0 raid1 └─sdb1 8:17 0 8G 0 part └─md0 9:0 0 8G 0 raid1 loop0 7:0 0 2G 1 loop sda 8:0 0 2.7T 0 disk ├─sda4 8:4 0 1.7T 0 part ├─sda2 8:2 0 512M 0 part │ └─md1 9:1 0 511.4M 0 raid1 ├─sda5 8:5 0 1M 0 part ├─sda3 8:3 0 1T 0 part │ └─md2 9:2 0 1023.9G 0 raid1 └─sda1 8:1 0 8G 0 part └─md0 9:0 0 8G 0 raid1 root@rescue ~ # mdadm -a /dev/md3 /dev/sda4 mdadm: Cannot open /dev/sda4: Device or resource busy root@rescue ~ # mdadm --stop /dev/md3 mdadm: Cannot get exclusive access to /dev/md3:Perhaps a running process, mounted filesystem or active volume group? root@rescue ~ # mdadm --assemble --force /dev/md3 /dev/sd[ab]4 mdadm: /dev/sda4 is busy - skipping mdadm: /dev/sdb4 is busy - skipping root@rescue ~ # mdadm --assemble --force /dev/md3 /dev/sd[a]4 mdadm: /dev/sda4 is busy - skipping root@rescue ~ # cat /etc/mdadm/mdadm.conf # mdadm.conf # # Please refer to mdadm.conf(5) for information about this file. # # by default (built-in), scan all partitions (/proc/partitions) and all # containers for MD superblocks. alternatively, specify devices to scan, using # wildcards if desired. #DEVICE partitions containers # auto-create devices with Debian standard permissions CREATE owner=root group=disk mode=0660 auto=yes # automatically tag new arrays as belonging to the local system HOMEHOST <system> # instruct the monitoring daemon where to send mail alerts MAILADDR root # definitions of existing MD arrays ARRAY /dev/md/0 metadata=1.2 UUID=c3c0b75a:8735901e:f41e750c:3dd667c2 name=rescue :0 ARRAY /dev/md/1 metadata=1.2 UUID=d760489f:0bd0b506:d60e62f6:1f9dc848 name=rescue :1 ARRAY /dev/md/2 metadata=1.2 UUID=c479d9a0:bc0ef6d0:29f2fcac:097a8f73 name=rescue :2 ARRAY /dev/md/3 metadata=1.2 UUID=22a8c922:44560691:9e731044:73ff2645 name=rescue :3 spares=1 # This configuration was auto-generated on Sun, 19 Feb 2017 20:14:21 +0100 by mkco nf ARRAY /dev/md/0 metadata=1.2 UUID=c3c0b75a:8735901e:f41e750c:3dd667c2 name=rescue :0 ARRAY /dev/md/1 metadata=1.2 UUID=d760489f:0bd0b506:d60e62f6:1f9dc848 name=rescue :1 ARRAY /dev/md/2 metadata=1.2 UUID=c479d9a0:bc0ef6d0:29f2fcac:097a8f73 name=rescue :2 ARRAY /dev/md/3 metadata=1.2 UUID=22a8c922:44560691:9e731044:73ff2645 name=rescue :3 spares=1 root@rescue ~ # fdisk -l Disk /dev/ram0: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram1: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram2: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram3: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram4: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram5: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram6: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram7: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram8: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram9: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram10: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram11: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram12: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram13: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram14: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/ram15: 64 MiB, 67108864 bytes, 131072 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/loop0: 2 GiB, 2097152000 bytes, 4096000 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 /dev/sda: 2.7 TiB, 3000592982016 bytes, 5860533168 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 Disklabel type: gpt Disk identifier: 60B4E04F-942D-4D1C-85FF-B23FE5128994 Device Start End Sectors Size Type /dev/sda1 4096 16781311 16777216 8G Linux RAID /dev/sda2 16781312 17829887 1048576 512M Linux RAID /dev/sda3 17829888 2165313535 2147483648 1T Linux RAID /dev/sda4 2165313536 5860533134 3695219599 1.7T Linux RAID /dev/sda5 2048 4095 2048 1M BIOS boot Partition table entries are not in disk order. Disk /dev/sdb: 2.7 TiB, 3000592982016 bytes, 5860533168 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 Disklabel type: gpt Disk identifier: 34C3C1CE-55FF-40E6-92E5-237952263F27 Device Start End Sectors Size Type /dev/sdb1 4096 16781311 16777216 8G Linux RAID /dev/sdb2 16781312 17829887 1048576 512M Linux RAID /dev/sdb3 17829888 2165313535 2147483648 1T Linux RAID /dev/sdb4 2165313536 5860533134 3695219599 1.7T Linux RAID /dev/sdb5 2048 4095 2048 1M BIOS boot Partition table entries are not in disk order. Disk /dev/md0: 8 GiB, 8581545984 bytes, 16760832 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 /dev/md1: 511.4 MiB, 536281088 bytes, 1047424 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 /dev/md2: 1023.9 GiB, 1099377410048 bytes, 2147221504 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 这个问题我花了一整天的时间。 任何帮助欢迎。