All Questions
Tagged with mdadm software-raid
105
questions
35
votes
10
answers
238k
views
How to get an inactive RAID device working again?
After booting, my RAID1 device (/dev/md_d0 *) sometimes goes in some funny state and I cannot mount it.
* Originally I created /dev/md0 but it has somehow changed itself into /dev/md_d0.
# mount /...
- 5,780
34
votes
3
answers
207k
views
How do I reactivate my MDADM RAID5 array?
I've just moved house which involved dismantling my server and re-connecting it. Since doing so, one of my MDADM RAID5 arrays is appearing as inactive:
root@mserver:/tmp# cat /proc/mdstat
...
- 2,607
28
votes
4
answers
65k
views
How-to change the name of an MD device (mdadm)
Here is the output from mdadm -Esv:
ARRAY /dev/md127 level=raid0 num-devices=2 UUID=d89d9d45:9a420812:c44c77eb:7ee19756
devices=/dev/sdb8,/dev/sda8
This is a v0.90 array. The question is as ...
- 1,469
11
votes
3
answers
16k
views
mdadm RAID Fast Setup with Empty Drives?
I am recreating some RAID5 disks as RAID6 with mdadm. There is no data on the drives that I care about.
Setting up RAID takes a while to setup the shape - I accept that when there there is data that ...
- 60.3k
9
votes
3
answers
4k
views
Can I use an entire drive for as a software raid member?
Can I use /dev/sda and /dev/sdb for my RADI1 configuration?
Or do I first have to partition both with a single Linux raid partition?
- 730
8
votes
3
answers
21k
views
How do I mount a software RAID1 (mirror) created by Windows in Linux using mdadm?
I'm switching my Windows server to Ubuntu and am trying to get my software RAID1 (mirror) that I created in Windows to show up in Ubuntu. I have read that this is possible here using mdadm, but I'm ...
- 972
8
votes
3
answers
7k
views
Raid1 with active and spare partition
I am having the following problem with a RAID1 software raid partition on my Ubuntu system (10.04 LTS, 2.6.32-24-server in case it matters).
One of my disks (sdb5) reported I/O errors and was ...
- 81
6
votes
3
answers
24k
views
Creating a RAID1 partition with mdadm on Ubuntu
I'm trying to set up a RAID1 partition on my Ubuntu 9.10 workstation.
On this dual-boot system, Ubuntu is running from a separate drive (/dev/sdc - an SSD that is quite small, which is why I need ...
- 5,780
6
votes
1
answer
504
views
mdadm: Win7-install created a boot partition on one of my RAID6 drives. How to rebuild?
My problem happened when I attempted to install Windows 7 on it's own SSD. The Linux OS I used which has knowledge of the software RAID system is on a SSD that I disconnected prior to the install. ...
- 191
5
votes
4
answers
15k
views
New mdadm RAID vanish after reboot
I have problems with mdadm after reboot, I can't reassemble /dev/md0 .
I work on debian wheezy.
I have done the following steps::
sudo mdadm --create --verbose /dev/md0 --level=6 --raid-devices=4 /...
- 51
5
votes
2
answers
11k
views
Convert RAID 1 to RAID 10 in mdadm
In my current Ubuntu server, I have 2x 2TB Western Digital RED hard drives in a RAID 1, using mdadm. I would like to add 2 more 2TB RED drives, and convert it to a RAID 10. I realize I would have to ...
- 24.4k
5
votes
0
answers
2k
views
mdadm RAID monitoring no DegradedArray email
So, I have a couple of MDADM RAID arrays and I want to set up monitoring with email notifications for drive failures through sSMTP but I can't seem to get it working.
The system in question is a ...
- 171
4
votes
1
answer
4k
views
MDADM RAID-0 does not increased size after grow on AWS Linux with EBS
I wanted to grew a Raid0 from 2 disks to 3 (each 1TB EBS on Amazon AWS) but the size did not change thereafter. The RAID started with two disks sdc and sdd and the new one was sdf.
Here is the grow-...
- 193
4
votes
1
answer
2k
views
Can I create a degraded mdadm raid10-near (raid 1e) array?
I have three drives in my current system (all 1TB). The current setup is:
sdb - raid0 member (failing soon)
sdd - raid0 member
sde - backup
I'd like to change it so all three drives are part of a ...
- 191
4
votes
1
answer
13k
views
Does mdadm record array event history?
I received an automated email from the mdadm daemon:
A Fail event had been detected on md device /dev/md0.
It could be related to component device /dev/sdh.
I find the wording strange. "could be"? ...
- 358