All Questions
Tagged with mdadm software-raid
105
questions
1
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0
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548
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Is `dmsetup remove` safe with respect to contained data?
I have a "lost" SW RAID array as described in this question: https://askubuntu.com/questions/311024/raid1-array-lost-after-upgrade-from-ubuntu-11-10-to-13-04. I have now identified a way to mount one ...
CommunityBot
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1
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0
answers
404
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Upon reboot, Linux software raid fails to include one device of a RAID1 array
One of my four Linux software raid arrays drops one of its two devices when I reboot my system. The other three arrays work fine. I am running RAID1 on kernel version 2.6.32-5-amd64 (Debian Squeeze). ...
- 111
0
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1
answer
2k
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Adjusting mdadm priority on Ubuntu
I have Ubuntu 12.04 running on my new server, and it is setup to run off of one drive, then 2 drives that are mirrored using mdadm. When streaming files or media from it, it is extremely slow. I was ...
- 514
2
votes
1
answer
5k
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Degraded RAID5 and no md superblock on one of remaining drive
This is actually on a QNAP TS-509 NAS. The RAID is basically a Linux RAID.
The NAS was configured with RAID 5 with 5 drives (/md0 with /dev/sd[abcde]3). At some point, /dev/sde failed and drive was ...
- 65.3k
1
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1
answer
812
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how to boot without assemblying raid arrays (or assembling them correctly)
I had one debian 6 system with two harddisks on raid1 set up via mdadm. built on simple partitions (/dev/sdb3, /dev/sdc3). at least on the old system, everything is tied up via UUIDs.
then i inserted ...
- 5,021
1
vote
1
answer
528
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Paritions "appear" in my raid 1 array after reboot, and the partitions in the array have changed names
I am moving my Ubuntu install to lvm over raid 1. I created the arrays with only 1 disk initially, planning to add the second disk later. I got the files moved and the system booted up succesfully on ...
- 21
8
votes
3
answers
7k
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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 ...
CommunityBot
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0
votes
1
answer
159
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Linux RAID Re-Shape Stopped
For the past 8 hours my mdadm re-shape process has been stuck. The output is:
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md0 : active raid6 sdo[11] sdn[12]...
- 858
0
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0
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70
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Do a Re-Build During a Re-Shape?
On my Linux software RAID 6 array, I'm currently mid-reshape and 2 drives have been marked as failed. I've swapped them out and added new ones to the array, which are currently marked as spares. The ...
- 858
0
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1
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2k
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How do I reinitialise a failed RAID 5 drive using terminal on Ubuntu Server
I've currently put together a new system and part of that has been creating a software RAID 5 using 'mdadm' in Ubuntu Server.
I successfully got to the point where I create the array using:
sudo ...
- 2,867
6
votes
3
answers
24k
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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 ...
CommunityBot
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2
votes
0
answers
3k
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mdadm raid5 read error not correctable
I have a software raid5 setup existing of 4 disks.
sda, sdb, sdc, sdd
Since everything was up and running I wanted to test the array. To do this I pulled the plug on one of the disks (sdd).
Everything ...
- 456
0
votes
1
answer
229
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How to identify raid1 disks
I would like to know how mdadm identifies physical disks of raid1 .
I think it is managed by uuids not device file like /dev/sdc2 /dev/sdd2.
But I can`t confirm such information of raid1.
1
vote
1
answer
2k
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degraded mdadm RAID5 array
My /dev/md0 array just died last night. I got this email
This is an automatically generated mail message from mdadm running on
A Fail event had been detected on md device /dev/md0.
It ...
CommunityBot
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1
vote
1
answer
959
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CentOS - mdadm raid1 drive won't mount to default location
I'm running CentOS 5.5, the system, boot, swap, etc. is all on /dev/sda and I have two identical single-partition drives /dev/sdb1 /dev/sdc1 that are configured in RAID1 (using mdadm). It was working ...
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