i now do it like this Link
i delete array and added like in example. No errors found.
I can see that it is monuted
Code:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/johnas--vg-root 223G 1.4G 210G 1% /
/dev/md0 1.8T 898M 1.7T 1% /mnt/md0
Code:
lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT
NAME SIZE FSTYPE TYPE MOUNTPOINT
sda 232.9G disk
└─sda1 232.9G LVM2_member part
├─johnas--vg-root 227G ext4 lvm /
└─johnas--vg-swap_1 5.9G swap lvm [SWAP]
sdb 1.8T linux_raid_member disk
└─md0 1.8T ext4 raid1 /mnt/md0
sdc 1.8T linux_raid_member disk
└─md0 1.8T ext4 raid1 /mnt/md0
I am now waiting to sync and try again to deattach disks and try to copy for example to /home/johnas/something, to see if it is good to go or not.
Just one question.
If I deattach one disk, and restart, it should be also in md0 because i added it in fstab.
Quote:
Originally Posted by Aia
I do not know if you have tried already any of the following commands to fail a drive, instead of forcefully removing it.
Code:
mdadm /dev/md0 -f /dev/sdc
Check the result
Code:
mdadm --detail /dev/md0
Remove the failed drive
Code:
mdadm /dev/md0 -r /dev/sdc
Check the result
Code:
mdadm --detail /dev/md0
Afterward you can add it back and check the result again and see it recover.
Code:
mdadm /dev/md0 -a /dev/sdc
[CODE]
Code:
mdadm /dev/md0 -a /dev/sdc
[/QUOTE]
Code:
root@myuser:/home/myuser# mdadm /dev/md0 -f /dev/sdc
mdadm: set /dev/sdc faulty in /dev/md0
root@myuser:/home/myuser# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Fri Aug 31 14:17:31 2018
Raid Level : raid1
Array Size : 1953383488 (1862.89 GiB 2000.26 GB)
Used Dev Size : 1953383488 (1862.89 GiB 2000.26 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sat Sep 1 16:42:36 2018
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 1
Spare Devices : 0
Name : myuser:0 (local to host myuser)
UUID : bb96aaed:688c6f5c:970569cb:092e37f9
Events : 3655
Number Major Minor RaidDevice State
0 8 16 0 active sync /dev/sdb
- 0 0 1 removed
1 8 32 - faulty /dev/sdc
root@myuser:/home/myuser# mdadm /dev/md0 -r /dev/sdc
mdadm: hot removed /dev/sdc from /dev/md0
root@myuser:/home/myuser# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Fri Aug 31 14:17:31 2018
Raid Level : raid1
Array Size : 1953383488 (1862.89 GiB 2000.26 GB)
Used Dev Size : 1953383488 (1862.89 GiB 2000.26 GB)
Raid Devices : 2
Total Devices : 1
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sat Sep 1 16:42:48 2018
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Name : myuser:0 (local to host myuser)
UUID : bb96aaed:688c6f5c:970569cb:092e37f9
Events : 3656
Number Major Minor RaidDevice State
0 8 16 0 active sync /dev/sdb
- 0 0 1 removed
root@myuser:/home/myuser# mdadm /dev/md0 -a /dev/sdc
mdadm: re-added /dev/sdc
root@myuser:/home/myuser# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Fri Aug 31 14:17:31 2018
Raid Level : raid1
Array Size : 1953383488 (1862.89 GiB 2000.26 GB)
Used Dev Size : 1953383488 (1862.89 GiB 2000.26 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sat Sep 1 16:43:29 2018
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : myuser:0 (local to host myuser)
UUID : bb96aaed:688c6f5c:970569cb:092e37f9
Events : 3660
Number Major Minor RaidDevice State
0 8 16 0 active sync /dev/sdb
1 8 32 1 active sync /dev/sdc
Code:
root@myuser:/home/myuser# mdadm /dev/md0 -f /dev/sdb
mdadm: set /dev/sdb faulty in /dev/md0
root@myuser:/home/myuser# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Fri Aug 31 14:17:31 2018
Raid Level : raid1
Array Size : 1953383488 (1862.89 GiB 2000.26 GB)
Used Dev Size : 1953383488 (1862.89 GiB 2000.26 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sat Sep 1 16:46:27 2018
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 1
Spare Devices : 0
Name : myuser:0 (local to host myuser)
UUID : bb96aaed:688c6f5c:970569cb:092e37f9
Events : 3672
Number Major Minor RaidDevice State
- 0 0 0 removed
1 8 32 1 active sync /dev/sdc
0 8 16 - faulty /dev/sdb
root@myuser:/home/myuser# mdadm /dev/md0 -r /dev/sdb
mdadm: hot removed /dev/sdb from /dev/md0
root@myuser:/home/myuser# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Fri Aug 31 14:17:31 2018
Raid Level : raid1
Array Size : 1953383488 (1862.89 GiB 2000.26 GB)
Used Dev Size : 1953383488 (1862.89 GiB 2000.26 GB)
Raid Devices : 2
Total Devices : 1
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sat Sep 1 16:46:37 2018
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Name : myuser:0 (local to host myuser)
UUID : bb96aaed:688c6f5c:970569cb:092e37f9
Events : 3673
Number Major Minor RaidDevice State
- 0 0 0 removed
1 8 32 1 active sync /dev/sdc
root@myuser:/home/myuser# mdadm /dev/md0 -a /dev/sdb
mdadm: re-added /dev/sdb
root@myuser:/home/myuser# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Fri Aug 31 14:17:31 2018
Raid Level : raid1
Array Size : 1953383488 (1862.89 GiB 2000.26 GB)
Used Dev Size : 1953383488 (1862.89 GiB 2000.26 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sat Sep 1 16:46:55 2018
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : myuser:0 (local to host myuser)
UUID : bb96aaed:688c6f5c:970569cb:092e37f9
Events : 3677
Number Major Minor RaidDevice State
0 8 16 0 active sync /dev/sdb
1 8 32 1 active sync /dev/sdc
and login to share folder via Windows, and put, download and delete files, and then add disk, then try again, then do it with /dev/sdb, and everything went ok.
So, from how i can see, it it ok.
------ Post updated at 09:57 AM ------
So from this i can be sure that files are on the disks? Can I check it somehow? Or this is a good test for it.
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