The raid1 tag has no wiki summary.
2
votes
1answer
57 views
mdadm - Accidentally ran “mdadm --create” on an existing raid-1. The superblock is now corrupt and I am unable to recover data. Did I bork my data?
I have /dev/sdb1 and /dev/sdc2 that were previously setup into a RAID-1 with mdadm, but then I reinstalled and lost the old configuration. Out of idiocy, I ran
sudo mdadm --create /dev/md0 --level=1 ...
0
votes
2answers
85 views
Need to Break RAID 1 on Linux Server
On one of our server Hardware RAID1(mirroring) is configured. Now we need to break the RAID1 and simply use the other Hard disk separated from RAID to extend the LVM on that server.
Can some one tell ...
0
votes
2answers
173 views
Can disks be accessed independently in a RAID-1 volume?
I want to create a RAID-1 array with Debian 6. This array will contain 6 disks, 3 for the OS and 3 mirrors.
I used this RAID before but on windows, and maybe I didn't do it good at all, because I ...
1
vote
1answer
121 views
How to rebuild a two drive raid 1 array on Linux?
I need to rebuild a two drive (160x2) raid 1 (mirror) array. It was an Intel raid from a 7 year old Dell computer (Windows). Both drives are assumed to be functioning. The raid was created with an ...
1
vote
1answer
186 views
convert /dev/md0 to /dev/sda1
I used a Software-RAID I and want to access the data without RAID now.
After
mdadm --fail /dev/md0 /dev/sda1
mdadm --remove /dev/md0 /dev/sda1
I tried
mount -t ext4 /dev/sda1 /mnt
but dmesg ...
1
vote
2answers
183 views
Can't remount local file systems for read-write (RAID1)
I assembled a new machine on Asus P9X79 motherboard, using its RAID controller to create a RAID1 array of two 500Gb drives.
When booting Arch from an external drive I am able to work fine with ...
1
vote
2answers
1k views
How to set up disk mirroring in Ubuntu?
I have a computer with two WD 1TB drives and I want to configure disk mirroring on it.
I tried setting up RAID during the installation by creating RAID partitions but that does not work for me.
Is ...
1
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0answers
57 views
Ubuntu 10.04 LTS hangs at 43% of preparing to partition raid 1drives
I have set up hardware raid 1 with two SAS drives using the Adptec 6405E controller. I am having a problem when installing Ubuntu 10.04 LTS as it hangs at 43 % when partitioning disk drives. So far ...
3
votes
2answers
87 views
RAID Lag-Behind Burst Write
I would like to setup RAID1 so that a ramdisk in the RAID configuration has occasional synchronisation with a physical disk (that is very battery intensive to run, so I hope to let it spinout).
Is ...
2
votes
1answer
221 views
“error: no such device” at boot in Ubuntu Server 11.10 with Raid1
I have a configuration of 4 HDD's as Raid1 2 pairs of 2 HDD's. First Raid1 pair is for system, so I just made an 40GB space for swap, and the rest of it for the root, the second pair of Raid1 is for ...
2
votes
1answer
799 views
Why does btrfs allow to create a raid1 with mismatched drives?
I'm creating a btrfs using
sudo mkfs.btrfs -m raid1 -d raid1 <small-disk> <large-disk> or
sudo mkfs.btrfs -m raid1 -d raid1 <large-disk> <small-disk>
it creates the fs with ...
2
votes
1answer
289 views
What are the advantages of swap on a raid-1 (mirror) device?
What are the advantages of swap on a raid-1 (mirror) device?
(in a server environment running linux)
I mean, you can just use multiple disk devices in linux for swap. And with swap devices that have ...
4
votes
1answer
6k views
mdadm raid1 and what chunksize (or blocksize) on 4k drives?
I want to use two 3 TB drives in a mdadm raid1 setup (using Debian Sequeeze).
The drives use 4k hardware sectors instead of the traditional 512 byte ones.
I am a bit confused because on the one hand ...
4
votes
5answers
2k views
Backup whole hard disk Linux
I am looking for a method to backup a whole disk in case something is screwed up...
I don't even know what to install on some special devices of the server, and every time it is not the same.
...
