All Questions
53
questions with no upvoted or accepted answers
2
votes
1
answer
4k
views
Mounting a raid1 device - no suitable drives found
I'm having some problems with my disks; long story.. but right now I'm trying to mount a device that was part of a 2-disk raid1. For that, I tried to assemble it into a new array, but...
% mdadm -Av /...
- 121
2
votes
0
answers
3k
views
mdadm: hot remove failed
My RAID1 is degraded and I need to replace /dev/sdb. However, I could mark /dev/sdb5 (in /dev/md1) as failed and removed it, but I can't do the same with /dev/sdb1 (/dev/md0 which is mounted on /):
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- 123
2
votes
2
answers
1k
views
Recover Linux software RAID5 array after server upgrade
I recently upgraded a server from Fedora 6 to Fedora 14. In addition to the main hard drive where the OS is installed, I have 3 1TB hard drives configured for RAID5 (via software). After the upgrade, ...
- 121
2
votes
1
answer
229
views
Gentoo Linux -> Ubuntu: Can I Preserve My LVM/RAID Devices, Or Do I Need To Reformat?
I've got a Gentoo box that I'm interested in switching over to an Ubuntu box.
I currently have the partitions laid out using a mixture of RAID (mdadm) and LVM2, as specified in this document [1].
...
- 2,964
1
vote
1
answer
297
views
Clean up left-over around a RAID5 coming from a QNAP NAS
I just moved a 12TB RAID5 (4 disks of 4TB) from my QNAP NAS into my Linux Server (/dev/md0), and I noticed that there are three "left-over" partitions on each disk (/dev/sd*1, /dev/sd*2, /...
- 31
1
vote
0
answers
219
views
Is it possible to create a RAID from only partial disk?
We have a dual boot system where we install firmare on two partitions, additionally we have a data partition. We have two disks on the system and I wonder if we can create a raid for the data ...
- 121
1
vote
1
answer
623
views
Way to monitor progress of RAID10 rebuilding disks, when RAID does not show in /proc/mdstat?
I have an inactive RAID 10, and the output of mdadm --assemble --scan -v |& tail -17 is:
mdadm: /dev/sdn1 is identified as a member of /dev/md/10, slot 5.
mdadm: /dev/sdk1 is identified as a ...
- 1,163
1
vote
2
answers
2k
views
How to migrate mdadm RAID10 with 4 disks to RAID5?
I have a software RAID10 based on Linux’ mdadm under Debian Buster. Originally I found RAID10 had best performance. But I need more space and accept to trade some write performance for +50% space.
# ...
- 845
1
vote
0
answers
569
views
Error when trying to reduce number of drives in a Linux RAID array
I’ve got a Synology NAS that I’m trying to reduce a RAID6 array from 12 drives down to 11 drives.
I’ve already reduced the size of the file system and logical volume, but when I try to reduce the ...
- 11
1
vote
0
answers
23
views
Remounting imperfect RAID 6 after clean install
I am running a small laboratory server (intermediate logins and data storage). It has 5 physical drives: one (sda) for /, and 4-drive RAID 6 (sd[b-e]) for /home. Due to a hardware fault, I had to ...
1
vote
0
answers
373
views
reassemble mdadm raid6 with 3 of 5 disks showing possibly out of date?
Not sure what happened but my raid 6 serving as xfs storage stopped to work
First I checked SMART of all devices but non of them showed an error.
cat /proc/mdstat
Personalities : [raid6] [raid5] [...
- 111
1
vote
0
answers
543
views
One RAID1 missing after reboot
I'm using Open Media Vault 3 that is based on Debian 8.
I already have a RAID1 of 2x4TB WD Caviar Red, and now I'm tring to build a RAID1 with two Seagate Ironwolf 6TB.
Whe I build it anything is ...
- 21
1
vote
1
answer
558
views
Can't find RAID1 after reboot
I have Debian8 with Open Media Vault on it.
I'm tring to build a RAID1 with two Seagate Ironwolf 6TB.
I can build the RAID1, create an ext4 partition on it and use it without a problem.
The problem ...
- 21
1
vote
0
answers
1k
views
mdadm partiton not large enough to join array
I've used Linux on and off for the last many years, mainly as dual boot or as Virtual Machines, but when I decided to build a Dev Laptop I though I'd bite the bullet and put Linux on as the base OS.
...
1
vote
0
answers
77
views
Is there a safe way to move a partition beneath a linux software RAID5 using mdadm?
Suppose, for example, that you have a RAID5 across multiple disks and you would like to retire the oldest of the disks and replace it with something from this decade. I know I can fail the partition ...
- 372