Raised the server to debian8, installed the system on a separate disk. WD took two disks with synology. There they were in raid1. I would like without erasing information from disks again to include disks in raid1. Tell me how to do it. if this is not possible, then at least extract information from the disks.

cat /proc/mdstat Personalities : [raid1] md2 : active raid1 sdc5[0] 2925531648 blocks super 1.2 [2/1] [U_] unused devices: <none> fdisk -l /dev/sdc /dev/sdb Disk /dev/sdc: 2.7 TiB, 3000592982016 bytes, 5860533168 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 Disklabel type: gpt Disk identifier: 4ECEA6BB-8B09-43FC-9C8A-21FDF196DE0A Device Start End Sectors Size Type /dev/sdc1 256 4980735 4980480 2.4G Linux RAID /dev/sdc2 4980736 9175039 4194304 2G Linux RAID /dev/sdc5 9453280 5860519007 5851065728 2.7T Linux RAID Disk /dev/sdb: 2.7 TiB, 3000592982016 bytes, 5860533168 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 Disklabel type: gpt Disk identifier: C70DB86E-61C2-467C-87A5-98D4A0D372E0 Device Start End Sectors Size Type /dev/sdb1 256 4980735 4980480 2.4G Linux RAID /dev/sdb2 4980736 9175039 4194304 2G Linux RAID /dev/sdb5 9453280 5860519007 5851065728 2.7T Linux RAID
  • Do you need raid0 for size or speed? - gbg
  • sdb for some reason you are not in the raid. I doubt that 1 can be turned into 0 without losing information. At the moment I see that sdc5 is one disk from the mirror. mount / dev / md2 somewhere and quietly talk off of it - Mike
  • wrong. I need to collect in raid1 (mirroring). I wanted to mount md2 and copy, but it does not work: / dev / md2 / mnt / sdc ext3 user, auto, rw 0 0 bash: / dev / md2: Permission denied sudo mount / dev / md2 mount: can't find / dev / md2 in / etc / fstab sudo mount / dev / sdb5 mount: can't find / dev / sdb5 in / etc / fstab - Roman Zhuravskiy
  • 1. In the comments, multi-line output is unreadable. add it to the question. 2. attach the output of the sudo fdisk -l /dev/md2 . 3. Correct the issue by clicking edit below the question text. - aleksandr barakin
  • @RomanZhuravskiy: "at least extract information from disks" - but now, isn't there any access to the data? If sdc5 to mount - it is impossible to count data from it? And you can add a disk back to the software array through mdadm -a /dev/md2 /dev/sdb5 ( wiki.dieg.info/mdadm ). But I would first copy the data from the existing disk, and then return the second one, figs it from what it fell off. - MANKK

0