All Questions
Tagged with mdadm software-raid
105
questions
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answers
257
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mdadm.conf: mdadm -E --scan *vs* mdadm -D --scan, which is correct to use?
I have two questions:
It's not clear which flag to use when generating mdadm.conf.
I've seen people and documentation use
mdadm -E --scan
I've also seen mdadm -D --scan.
Which is correct to use?
...
- 1
0
votes
1
answer
46
views
I added 5 drives to mdadm raid array, then I noticed 3 had partitions on them already. What is going to happen?
I have a 15 drive raid6 array using MDADM on ubuntu linux 18.04.2 server. I installed 5 more drives and added them to the raid array, and it started reshaping. However, after that I noticed that three ...
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116
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Computer crashed, raid array in trouble
I arrived home today to find my home server was off (not idea why). Turned it back on again and the raid array was failing to mount.
/proc/mdstat shows:
Personalities :
md0 : inactive sdh[7](S) sdc[...
- 1
0
votes
1
answer
190
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AMD SP5100 Raid 0 rebuild
I was using an onboard AMD SP5100 raid controller for a Raid 0 on two 1TB drives. The motherboard has failed. I have two questions - firstly if I replace with an identical motherboard, will I be able ...
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votes
1
answer
83
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Software RAID0+1 using 3 disks
Is it possible to use mdadm to do RAID0+1 using 3 disks?
My scenario is 1x2TB disk and 2x1TB disks. Not interested in the RAID0 performance boost, just want to combine them so I can mirror them with ...
0
votes
1
answer
78
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Need to recover RAID0 disks from failed linux box
I have two drives from a failed old Linux box that were configured as RAID0.
I have created two dd image files using the following commands on my Mac:
dd if=/dev/disk3 of=disk0.img.dd bs=512
dd if=/...
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votes
2
answers
266
views
RAID0 data recovery & recovery strategy validation
I have a Synology expansion (DX213) connected to my NAS. It houses 2 disks of 2TB and they are in a RAID0 configuration (awful idea, I know and I don't need a reminder ;) ). Last weekend, the array ...
- 101
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votes
1
answer
45
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Linux software Raid5 DegradedArray with mdadm
So I changed my case and I don't know why but one my SATA port does not work anymore. So only 5 of my 6 RAID5 disks were recognized. The volume was automounted anyway and I already wrote new files on ...
- 25
0
votes
1
answer
188
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Unable to assemble mdadm array due to lack of errors
My virtual machine host system is running Debian 8.4. I had to restart the system yesterday and did not yet manage to get my mdadm array up and running again. I can boot up normally, but no array (or ...
- 1
0
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0
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511
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Hybrid Raid-1 HDD + SSD -- Write Intent Bitmap
I am currently running a laptop with 1 HDD and 1SSD.
I currently am using mdadm to put some partitions in a raid 1 configuration with --perfer-write set on the HDD. I have this working correctly ...
- 229
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votes
1
answer
1k
views
Recover software RAID
I built a RAID-1 with two hard drives using mdadm. Command used was:
mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb /dev/sdc
it went fine, I create partition table and partitions in it, ...
- 101
0
votes
0
answers
70
views
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
votes
1
answer
159
views
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
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1
answer
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 ...
- 211
0
votes
1
answer
826
views
Adding sda1 vs. sda to a linux software raid
I'm running a Linux md software RAID 6 on several USB hard-drives. Each drive is partitioned to contain one partition of type fd (linux raid). My RAID is built on these partitions, i.e. it uses sda1, ...
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