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Questions tagged [mdadm]

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A linux utility used to manage software RAID devices.

603 questions
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5 votes
1 answer
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I'm using a RAID level 5 array on Kubuntu 25.10. It uses 5 HGST disks and has been active since 2015. This array have survived a hardware migration to a new motherboard as well as continual Linux ...
David Fuller's user avatar
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0 votes
0 answers
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I have ordered few ubuntu servers from one provider and need to change raid 1 to raid 0 on system partition Usualy new server has a disc structure And I do a change by following commands from running ...
demon101's user avatar
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1 vote
1 answer
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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 ...
Haris's user avatar
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5 votes
1 answer
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I am facing an issue with my RAID 1 (mdadm softraid) on an AlmaLinux/CloudLinux OS server, which is a production server with live data. Here's the chronology of events: Initially, I created a RAID 1 ...
Hendra Setyawan's user avatar
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0 votes
1 answer
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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 ...
Rikardny's user avatar
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This is more informational than a question though someone may have a better answer than the solution I came up with. This was a fresh install of Ubuntu server, literally nothing done other than ...
GrnEyedDvl's user avatar
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1 vote
1 answer
79 views

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 ...
treuss's user avatar
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1 vote
0 answers
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This is on a Iomega IX200 NAS which had been expanded to 4TB disks from the original 2TB. It all looks good. But when I try to save data to a new file I get the "No space left on device error&...
Pro West's user avatar
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1 vote
1 answer
480 views

I have a debian host configured as a NAS using 6 disks in a RAID 5 setup. The current configuration is as follows: # mdadm -D /dev/md0 /dev/md0: Version : 1.2 Creation Time : Fri Mar ...
Frederik Hoeft's user avatar
  • 65
2 votes
0 answers
434 views

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. ...
T Shoaf's user avatar
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0 answers
59 views

I'm still relatively inexperienced in Linux and this is my first post here. I configured mdadm raid 10 far acording to archlinux RAID wiki page but with custom chunk size 64K. It contains 2 older ...
Dmk's user avatar
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2 votes
1 answer
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Edit: Both /dev/sdd and /dev/sde are missing super blocks. I assume this cannot be fixed. I am whipping the drives and starting over. I just finished coping 8TB worth of data to a new raid5 array. I ...
Scott Mayo's user avatar
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1 vote
0 answers
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I suspect that the answer is no. I also had the UUID of /dev/md0 so I tried to update the mdadm.conf file by adding the line: ARRAY /dev/md/0 metadata=1.2 UUID=b431e078-5d6d-43db-9631-fd1c827406d5 I ...
JackL's user avatar
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1 vote
1 answer
107 views

I have created software raid5 using mdadm in Debian Linux. Now I want to switch to OpenBSD and interested if I will be able to mount my raid5 under new system?
gio's user avatar
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1 answer
323 views

I found several places suggesting to use btrfs under mdraid (mdadm) or LVM Raid. But nobody expands on how that works when you have data checksum issues! My main concern of not using btrfs native raid,...
gcb's user avatar
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