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sudo mdadm --assemble --run /dev/md0 /dev/sdc1 mdadm: /dev/sdc1 is busy - skipping

id flag

I am able to mount /dev/md0 device but not sdc1. While mounting sdc1 getting below error.

sudo mount /dev/sdc1 /mnt/s1/
mount: /mnt/s1: unknown filesystem type 'linux_raid_member'.
janardha@saankhya-virtual-machine:~$ sudo mdadm --assemble
ng flag
There are many confusing things here. You have RAID inside a virtual machine? And why are you trying to mount component drives directly? This breaks your RAID data.
Nikita Kipriyanov avatar
za flag
In addition to that, please provide the output of `lsblk`.
Janardha Veeramreddy avatar
id flag
Yes, I am trying raid inside virtual Machine. I copied some data to my raid device(/dev/md0), I want to check same data is copied to component drives(/dev/sdc1) or not. lsblk info: sda 8:0 0 96G 0 disk ├─sda1 8:1 0 64G 0 part / └─sda2 8:2 0 1M 0 part sdb 8:16 0 16G 0 disk └─sdb1 8:17 0 7.2G 0 part └─md0 9:0 0 7.2G 0 raid1 sdc 8:32 0 16G 0 disk └─sdc1 8:33 0 7.2G 0 part └─md0 9:0 0 7.2G 0 raid1
Janardha Veeramreddy avatar
id flag
Raid command I used: sudo mdadm --verbose --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1
Janardha Veeramreddy avatar
id flag
lsblk info: sda 8:0 0 96G 0 disk ├─sda1 8:1 0 64G 0 part └─sda2 8:2 0 1M 0 part sdb 8:16 0 16G 0 disk └─sdb1 8:17 0 7.2G 0 part └─md0 9:0 0 7.2G 0 raid1 sdc 8:32 0 16G 0 disk └─sdc1 8:33 0 7.2G 0 part └─md0 9:0 0 7.2G 0 raid1
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