Questions tagged [raid]
RAID - Redundant Array of Independent Disks. A Storage technology to provide redundancy and performance, to reduce I/O bottlenecks involved in using multiple disks for large storage.
842 questions
0 votes
1 answer
37 views
Can I combine raid1 and dup BTRFS profiles?
In essence I want to have two mirror devices but also two copies of the data on each device. Will something like this work and behave as I expect? btrfs balance start convert=raid1,dup,soft /mnt/sdxn/
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1 vote
1 answer
141 views
mdadm --monitor --program option not working
I am trying to make mdadm call into a simple bash script which writes a message in the kernel log in case of a state change. I am running on a VM (qemu). The VM is running debian 12.5, and kernel ...
- 63
0 votes
0 answers
60 views
mdadm: Cannot get array info for /dev/md127
i have one problem. I created RAID1 with two discs, then i simulated failure of one of the discs. It was sdb1. I restared the VM with one disc working in RAID array. Then i added new fresh disc to add ...
1 vote
1 answer
74 views
How to merge two directories with failover?
Lets say I have two devices: /dev/sda1 mounted to / (system partition) /dev/sdb1 mounted to /media/data (data partition, usb device may be unplugged) I want to merge/overlay/raid two directories ...
- 550
0 votes
1 answer
74 views
Troubleshooting RAID1 unbootable disks after CMOS reset
I've been running a RAID1 setup using two Samsung 970 EVO 500GB NVMEs on an Asus Z390 Maximus XI Formula motherboard for the last two years. This is my home server running Ubuntu 22.04 and I chose ...
- 101
0 votes
0 answers
84 views
Recovering a RAID6
We experienced a power outage last Thursday morning. Luckily the OMV server is on battery backup, so I was able to shut the server down. Once power was restored, I restarted the server and the RAID ...
1 vote
1 answer
71 views
Remove a disk from a Raid1 array and use it as cold backup?
My RAID1 array is currently running with 3 disks (2x6TB and 1x3TB). I want to remove the smaller disk and wonder if it makes sense to put it in the safe as cold backup. The idea is to be able to mount ...
- 313
2 votes
0 answers
376 views
Mdadm array is inactive, how to fix?
I have a RAID5 array configured with MDADM in Ubuntu 24.04 LTS. The array consists of five 8TB drives, and there have been no changes to it recently. Today I noticed that the array is not accessible. ...
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