All Questions
122
questions
3
votes
1
answer
249
views
SSD failed, mdadm thinks the RAID0 array is fine
I have a RAID0 array created using mdadm in Debian. sdf is the drive that died.
$ cat /proc/mdstat
md4 : active raid0 sdf1[1] sde1[0]
468859904 blocks super 1.2 512k chunks
$ mdadm --misc --...
- 161
3
votes
1
answer
2k
views
Documentation for mdadm bad block support
I've read a bit about that mdadm (and the kernel) now have bad block support but I am having a hard time finding any useful documentation on this subject.
Is the bad block list for disk X duplicated ...
- 1,260
2
votes
1
answer
1k
views
Ubuntu server remove extra partition and resize current larger in mdadm RAID1
I am running an Ubuntu Server. Currently, I have the hard drive configuration shown below:
I want to remove the /mnt/winback partition and add the extra space to the /mnt/data partition. What is the ...
- 241
2
votes
1
answer
2k
views
"ext4lazyinit" running since 6 days on a new RAID5 array
I know there are a lot of "ext4lazyinit" topics. But they are all about 4-6TB HDD, and poster stating that it has in the end been completed after a few hours.
On my side i have a newly ...
- 293
2
votes
1
answer
6k
views
Assembling an mdadm array with "possibly out of date" disks
I've recently moved house and have had some power problems after switching on my file server that's using a mdadm RAID5 set up. The file system I'm using is ext4.
It seems that at some point two (of ...
- 21
2
votes
1
answer
2k
views
Linux raid10 on btrfs
I've read that BTRFS requires at least 4 disks (https://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices).
Indeed, Linux mdadm raid10 requires only 2 disks (http://en.wikipedia.org/...
- 21
2
votes
1
answer
184
views
How to recover a RAID 5 after deleting the partition table and fstab?
I have a RAID5 set up for my storage drives on my Nixos 23.11 machine. I followed this guide to set up the RAID (and I followed it very closely).
I have just reinstalled Linux on my boot drive (...
- 41
2
votes
1
answer
2k
views
how is mdadm executed during startup?
I think I read documentation/internet left to right, but I cannot see anywhere information, how is mdadm invoked during system startup. I cannot see anything in /etc/rcX.d, I cannot see any systemd ...
- 583
2
votes
1
answer
2k
views
Why did mdadm disable a disk on my raid array?
In syslog I see:
Jun 3 15:07:12 storage kernel: [36518.430143] md/raid1:md0: Disk failure on sdd1, disabling device.
Jun 3 15:07:12 storage kernel: [36518.430143] md/raid1:md0: Operation continuing ...
- 147
2
votes
3
answers
2k
views
RAID-1 and regular drive removal (using RAID-1 as a backup measure)
Is using mdadm's RAID-1 of 2 partitions (one on laptop's internal HDD, one on external HDD) a good idea.
I want the system to work as RAID-1 if both drives are present, work as regular volume (...
- 17.3k
2
votes
0
answers
145
views
Mounting External Intel Raid Device on Linux Failing, No Suitable Superblock and Read Past End
I have a hard-disk from a dead machine that I'm trying to mount on my Linux machine. For reference, I'm using Fedora 39 and mdadm v4.2. First, I tried just mounting it, correctly showing it's a RAID ...
- 221
2
votes
0
answers
445
views
Mayhem with partitions and GPT: mdadm RAID overwritten by Windows partition - possible to fix partition table?
dear Community,
I’m writing as I may have wrecked my system up.
I launched disk manager in Windows; as one of my disks was not recognized, and as Windows kindly suggested me to initialize the-said ...
- 21
2
votes
0
answers
266
views
Raid6 mdadm reshape operation interrupted - now cannot mount or examine
Edit: Once the reshape finished the drive became fully accessible again.
I had a power failure while a raid6 array was being reshaped, and now certain operations cannot be run against it, including ...
- 279
2
votes
0
answers
52
views
Sata 2 vs Cacheless SAS6G JBOD Performance
I have some "old" servers here, using Asus P9D-MH/SAS/10G-DUAL
https://www.asus.com/Commercial-Servers-Workstations/P9DMHSAS10GDUAL/
This board comes with a SAS 6Gbps controller, an LSI SAS2308 ...
- 37
2
votes
1
answer
3k
views
mdadm shows inactive raid0 array instead of degraded raid6 after disk failure
I've been running an Ubuntu 18.04 system with an 8-disk raid 6 array, that crashed while having a faulty disk (I only noticed that there was a faulty disk after the crash). The raid array has survived ...
- 21