All Questions
27
questions
0
votes
0
answers
15
views
Using mdadm to perform no-downtime backupd
I have a server running Ubuntu 23.10. It contains several RAID 1 arrays created using mdadm. One of these holds the virtual machine disk images of my web-servers. Currently, to backup these images, I ...
- 1
0
votes
0
answers
128
views
mdadm lost RAID5 after new motherboard and processor
I moved my mdadm RAID5 to a different motherboard/processor, same boot drive.
The array is no longer found during a mdadm --assemble --scan
The motherboard was previously running INTEL RAID, so when ...
- 56
0
votes
1
answer
437
views
Why MDADM removes disk with no errors from array and marks it as failed
I have a Raid6 that keeps automatically marking a disk (/dev/sdi) as Failed and removing it from the array even though the long test does not show any errors:
Test results
sudo smartctl -l selftest /...
- 121
0
votes
2
answers
3k
views
How to restore my RAID5 after mistakenly failing one of the drives?
I have a RAID5 on Xubuntu 20.04, created with mdadm. I failed one of the three drives by mistake. The array is still working, but I get errors or responses I do not understand from my attempts to ...
- 183
0
votes
1
answer
241
views
mdadm completely re-syncs the raid5 member but looses every time after reboot
While installing win10 I might have accidentally overwritten on a raid5 member (3 disk setup). So used ubuntu livecd to re-add the disk and re-sync it (took 6 hours). But after I reboot the disk is ...
- 361
3
votes
0
answers
744
views
MD RAID 6 with XFS Periodic Kernel Panic -- Possible Kernel Bug?
This now appears to be a bug with the combination of MD and XFS after finding similar kernel panic reports elsewhere. A bug report with Ubuntu has been filed here ( https://bugs.launchpad.net/ubuntu/+...
- 715
2
votes
0
answers
2k
views
Recovering a Synology Raid 0 from Ubuntu (Healthy drives)
I am trying to remount a Synology raid 0 with 3x2GB drives. As far as I know, the drives are in healthy condition.
I simply don't have enough space to do a full image of these before I proceed, so I ...
- 21
1
vote
3
answers
9k
views
MDADM raid "lost" after reboot
I am kind of scared right now, so I hope you can bring light on my problem!
A few weeks ago, I bought a new 2TB drive and decided to setup a software RAID 5 with MDADM on my HTPC (drive sdb, sdc and ...
- 315
0
votes
1
answer
2k
views
Can I read a single MDADM RAID 1 disk from the software RAID array and/or from another computer?
I've been using a HPE MicroServer Gen10 for a while, and I'm about to setup a RAID 1 configuration for my OwnCloud storage. The server is running Ubuntu 17.10.
The disks are simply two Western ...
1
vote
1
answer
1k
views
MDADM Raid Recovery and Questions
I've been working through this in my head for the entire day, and wanted to branch out and get some feedback/opinions on this setup, and how I can handle it if it ever happens to fail.
I have a ...
- 115
3
votes
1
answer
17k
views
Linux mdadm does not assemble array, but recreation of array does it
Maybe i'm not very clear in the title. When i'm trying to assemble my raid1 array with mdadm:
sudo mdadm --assemble /dev/md0 /dev/sdc /dev/sdd
It tells me that
mdadm: Cannot assemble mbr metadata ...
- 45
1
vote
1
answer
2k
views
MDADM rebuild raid 6 with 3 'failed' drives
I've ran into the following problem:
My Raid 6 (/dev/md6) failed after 3 disks fell out of the array.
One of the disks must have been out for a while (in SMART, 5 of the 6 disks have an uptime of ...
- 111
0
votes
2
answers
696
views
Ubuntu RAID 10 - unable to assemble
Here's a brief history of how I got here:
4x disk Ubuntu 12.04 software RAID10 with 5x partitions (md0 - md4)
1x disk died
mdadm --fail > mdadm --remove > physically removed drive and replace
mdadm --...
0
votes
1
answer
2k
views
I reinstalled ubuntu and now I don't see my RAID drive
I originally had a Ubuntu 12.04 system with RAID5 array that I built using mdadm.
Due to issues with graphics drivers, the 12.04 system crashed and I had to reinstall the operating system. After ...
- 270
0
votes
1
answer
1k
views
mdadm large memory consumption
Hi i'm build mdadm RAID 6 (8 WD Red 3 Tb) on ubuntu 13.10x64 server with ext4 fs
When i download torrent on the array, server RAM is filled for maximum cap (8 Gb)
memory is free when i manualy enter
...
