Questions tagged [raid]
RAID - Redundant Array of Independent Disks. A Storage technology to provide redundancy and performance, to reduce I/O bottlenecks involved in using multiple disks for large storage.
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How can I recover from a failed drive in a BTRFS RAID1 array: devid uuid .... missing
I have a BTRFS disk from a two-disk raid1 array. When I try to mount the drive, I get
sd 0:0:0:0: [sda] Attached SCSI disk
BTRFS info (device sda2): using crc32c (crc32c-intel) checksum algorithm
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How can I encrypt a ZFS pool?
Preface: I used to run TrueNAS (SCALE) which is where I originally created the tank pool.
On Ubuntu Server, I'm trying to assign/change the key of a newly created pool but I am getting the error Key ...
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How to recover data from a RAID 5 array of a non-working Dell Perc H310 controller [duplicate]
Good afternoon!!!
I have a raid 5 array on a Dell Perc H310 controller.
After the lights went out it stopped starting. Most likely the disc is gone or there is some kind of failure. In this case I ...
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Is possible to rename /dev/md126 to /dev/md0 and at the same time maintain the alias on /dev/md?
This is my /etc/mdadm/mdadm.conf
ARRAY /dev/md/root metadata=1.2 name=root UUID=331728d9:c4d12r4f:f589d3ze:01ab3c17
ARRAY /dev/md/backup metadata=1.2 name=backup UUID=429845f1:d5e24f5g:8135dgte:...
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Debian, how to change md name using initramfs script and not livecd?
Is possible to change an md name while the md is still active? AFAIK is not possible
mdadm -A --update=name --name=ibmlinux-root /dev/md126
ls /dev/md/126_0
/dev/md/126_0
ls /dev/md/ibmlinux-root
...
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Updating NAS distro from Debian 9 to 12 while preserving software raid
I need to upgrade my pc used as nas from debian 9 to 12, but I would like to do a fresh installation rather than an upgrade.
My machine have:
1 ssd for boot (sda)
2 hd raid 1 (sdb + sdc)
2 hd raid 1 (...
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Raid0+1 - Unexpected results with dmraid
I have 4x 1.8 TB HDD ( 2 TB ) in an existing Raid0 array. /dev/md127
/dev/md127:
Version : 1.2
Creation Time : Fri Mar 31 21:34:58 2017
Raid Level : raid0
Array Size : ...
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Recover data from old working RAID 1 disk
I am running a system with Debian 12. /root/ is on a RAID1 array with mdadm with 2 mirrored SSD (let's call them disks A and B). All disks are perfectly functioning.
I wanted to replace the two A and ...
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resize disk partition which is used by RAID
I need to shrink the sdb4 partition, which currently occupies the entire 7TB of my sdb drive, in order to create an sdb5 partition for my application. The challenge lies in the fact that there is a ...
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How to format NVMe drive in Linux suitable for raid 1 and lvm on xen Host
I want to create a software raid on two identical SSDs
How do I create partitions and format them optimal?
lsblk
nvme0n1 259:0 0 953.9G 0 disk
nvme1n1 259:1 0 953.9G 0 ...
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Is possible that Software RAID 6 kick the / partition without automatically re-arrange array?
I have a Raid 6 configuration with 14 HD (16Tb each one)
They are configured in this way:
/dev/md0 /swap
/dev/md1 /boot
/dev/md2 /
/dev/md3 /home
and drives are:
sda,sdb,sdc...sdn
Each unity is ...
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Best way to swap out two drives in Linux software RAID6 array
I've been running an 8x2TB RAID 6 mdadm array on Debian for several years. Last array check found no errors, but SMART data for a couple of the drives is indicating some bad sectors. I'd like to swap ...
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create physical volume from multipath raid system
I currently want to mount an existing raid system. The rack is connected via multipath. With the command multipath -ll all racks are correctly shown and the mapper are present under /dev.
My first ...
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Did my array go away or is the partion not mounting correctly after reboot
I had created a raid-1 array for two drives (sde and sdf) using the normal mdadm process and had created it under md1 and mounted it to /mnt/storage. After a reboot md1 no longer exists. My /mnt/...
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Does BTRFS raid 10, support the failure of 2 devices?
According to this answer
The guarantee that BTRFS offers, which makes it looks like regular raid 10, is that each piece of data is guaranteed to exist on two distinct drives, so the filesystem will ...
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Raid1 in Bios but only see one partition in Disks
My PC has 2 Disks, each one is 256GB. I set up RAID 1 in BIOS and installed Ubuntu.
When I check the Disks program from Ubuntu, I see overall 3 disks. Number 1 and 2 are the physical disks and they ...
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Extending a software RAID1 configuration
There is a system with 2 equivalent HDDs (both are 4TB), and they are "bind" together with raid1:
$ sudo mdadm --query --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time ...
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How to move a mdadm software raid-5 attached to a 5 bay NAS enclosure from one PC to another?
I have a 40TB (32TB available, RAID-5) 5-bay Yottamaster NAS enclosure that I was able to setup on one of my work linux stations. The NAS enclosure uses a USB type C to transfer data (up to 10Gbps).
...
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RAID array setup - same drives in different arrays
I'm trying to finish configuring and mounting a RAID array on a machine I've become responsible for. I feel the previous owner tried and failed to set up the array, but I don't know how to be sure. My ...
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What's the best method to raid1 a btrfs and efi boot drive?
I have two NVME drives, one of which is already working as I want and I boot off of it: it has two partitions one for EFI, one for the BTRFS Linux filesystem.
Device Start End ...
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What is a btrfs "5 disk RAID 10" (or raid 10 with odd number disks)?
In this video the author says he went from four disk BTRFS raid 10 array to a five disk RAID 10 and it took about a week. But I'm confused, how does a five disk RAID 10 work? Raid 10 is two or more ...
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can lvmcache have split read and write cache?
I'm doing some reading on lvmcache-ing, but didn't really find out if you can have split LVs for read and write. Ideally I'd have a nvme based volume for read cache, and a mirror ssd for writeback. ...
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Why isn't it possible to convert an existing striped / raidz zfs pool to one with increased parity by adding one or more disks?
Just to be clear, I am talking about taking an existing striped (i.e. RAID0) zfs pool and converting it to raidz1 (RAID5) or raidz2 (RAID6) after adding one or two new devices respectively and ...
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LVM mirror disk failed, can't be removed, so LV can't be accessed
I'm trying to help someone resurrect a RAID1 mirrored LVM logical volume on an old server running Fedora 20 (lvm2-2.0.2.106, linux 3.19.8-100). One of the disks in the mirror is dead. The LV is ...
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Rebuilt RAID6 Array Mounting Issue
Having succssfully imaged the 7 hard disk drives from a failed Thecus N7700 Pro NAS and having apparently successfully rebuilt the RAID6 array from backed images I'm getting an old PV header warning ...
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Imaging Hdds from Failed 7-Bay NAS RAID 6
I have a failed Thecus 7700 Pro v1 NAS unit, that is completely inaccssible over the network and has no video output (- tried connecting a stripped VGA cable to the empty VGA socket on the motherboard ...
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Problems accessing files on a RAID1+LVM from failed QNAP
Brief context
I have a QNAP TS-451. The NAS has failed, but I'm pretty sure the drives are still fine. I have a new QNAP TS-462 to try to replace it and I'd like to ensure my data is intact in the ...
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How to install and get RAID 0 to work on Rocky Linux 8.7 using AMD controller
Running this command I can see the RAID controllers for my motherboard in Rocky Linux 8.7
[root@richardserver ~]# lspci -nn|grep RAID
03:00.1 RAID bus controller [0104]: Advanced Micro Devices, Inc. [...
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How to reassemble s/w RAID 10 in ubuntu after a disk failure? Currently it has only 3 disks and is showing as RAID 0-Inactive
After a disk failure my RAID 10 system got degraded to RAID 0 - Inactive. It is running on ubuntu 18.04 with components (/dev/sda, /dev/sdb, /dev/sdc, /dev/sdd). How can I replace the failed disk (/...
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Which RAID levels and related are supported by bcachefs and how to configure?
2023-10-31, Bcachefs Merged Into The Linux 6.7 Kernel:
https://www.phoronix.com/news/Bcachefs-Merged-Linux-6.7
https://web.archive.org/web/20231103095158/https://www.phoronix.com/news/Bcachefs-Merged-...
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Does my disk support SMART?
I'm confused about this smartctl output. It says SMART status is not supported, but then it says it PASSED.
# sudo smartctl -H -d megaraid,24 /dev/sdb
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10....
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Reading an image with dd from a hard disk connected to a raid controller does not make it over 4GB
I am trying to create an image of a HDD connected to a Promise Fastrack TX2300.
I am trying to do this with the live Linux 'grml'.
The hardware on which this is taking place is long past its best days:...
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linux mdadm dm0 assembly error: md: cannot handle concurrent replacement and reshape. (machine reboot while reshaping)
I have an issue with my linux raid setup and I hope somebody here could help me get my raid active again without data loss.
I have a debian 11 system with one raid array (6x 1TB hdd drives, raid level ...
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Raid is not captured when rocky8 is installed on hp 10th generation server
Hello? I am currently working with a ProLiant DL20 Gen10 server.
In spite of doing the following, there was a problem that Raid was not normally caught when installing Rocky 8.
Raid-1 two 1TB HDDs ...
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specifying linux kernel md not checking v1.2 superblock
I am trying to boot a Linux software raid array without an initramfs.
I am passing md=0,/dev/nvme0n1p1,/dev/nvme1n1p1 root=/dev/md0 to the kernel.
I have also tried md=d0,.. to no avail.
Examining the ...
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RAID6 unable to mount EXT4-fs: bad geometry: block count exceeds size of device
On my server, I had an SSD as the boot drive with 11 6TB HDDs in a RAID6 setup as additional storage. However, after running into some issues with the motherboard, I switched the motherboard to one ...
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How should the EFI partition be handled in a software raid?
I am trying to install Arch onto a computer, I have two storage devices.
I partitioned the drives identically as I would if I were installing to one storage device on efi dekstop.
sda
sda1 (boot ...
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Is it possible to expand a RAID 0+1 created with mdadm?
I have this raid, it is a raid01 (a mirror of two stripes).
This is the original situation:
cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
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Recover data from deleted (still intact) raid 5
So through a shell script gone sideways I accidentally deleted my mdadm raid5 (3 HDDs) and the partitions from the disks (so disks still connected according to lsblk as {sdb|sdc|sdd}).
I have not ...
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How to mount the BTRFS top sub-volume on Synology?
To track space that hasn't been reclaimed on large BTRFS raids there is a helpful tool called BTDU.
To run it the top-level subvolume (-o subvol=/,subvolid=5) needs to be mounted.
So I'm wondering:
...
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replacing hot swap disk on same controller DL380
I have a DL380 G9 server with RAID card and a few RAID LD setups. IT has some unassigned drives too. These are on the same SAS controller.
I know that when disk fails I can remove it and plug in a &...
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Recover mdadm raid1 built with full disks (overwritten partition data)
While setting up my new PC I also setup a new RAID 1 with 2 drives with LUKS on top.
After copying all the data to it I made sure everything was usable and afterwards shredded the old drive.
But now I ...
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How to mount after raid5 assemble?
I had some raid problems where the raid5 setup in my PR4100 seems to be lost.
I tried everything and ended up manually rebuilding the raid:
mdadm --create --assume-clean --level=raid5 --raid-devices=4 ...
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Is multipathd required?
Do we need this daemon to run all the time on Ubuntu if we are not using any scsi or remote storage?
e.g. I have softraid1 NVMe as / and boot partition and softraid SSD as storage /backup mount.
If ...
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Raid profile missing or gone after drive replacement
I have a 5 year old PR4100 with 4 x 2TB WD red's. It was always configured in the default Raid1 setting. A week ago, my PR4100 showed a red led on the first drive. My files were still accessible and ...
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Multiple mdadm raid rebuild in parallel
I wonder is there any procedure to initiate concurrent rebuild of two or more separate arrays?
while one is rebuilding, another stays in status:
md2 : active raid10 sdf5[4] sdd5[6] sdc5[5] sda5[7]
...
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QNAP TS-251+ does not recognize data disk configuraiton after hard resetting without the disk in
I have a QNAP TS-251+ NAS server with two bays. This is for home use and cloud function with mobile applications, with full disk LUKS encryption system and 2 shared and encrypted folders, I know the ...
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Recently added drive not showing full capacity
I've been running a JBOD raid with a hardware controller and recently added two new drives. The partition was set up to span the full set of disks, and the RAID rebuilt fine. The trouble i'm having ...
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ZFS pool corrupted, shows /dev/sdb twice as disk used
Woke up to a nasty surprise a couple of days ago to see that my zpool couldn't be imported. After discovering that sdb had faulted I assumed it was time to replace the drive, so I hot swapped it. ...
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1
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Creating a new raid1 mdadm luks device creates two unwanted partitions
I am trying to create a raid1 (with mdadm) device with luks. However, it creates two partitions instead of one as you can see below:
sde 8:64 0 3,6T 0 disk
`-sde1 8:65 ...
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