#raid1

Deekshith Allamanenidsoft@techhub.social
2025-06-16

Excited for Btrfs RAID1's "preferred read device" feature in Linux 6.14. This allows to have one fast device, example SSD backed bcache device and other slow cheap hard drive. We can set the bcache deice as preferred read device so reads are always fast.
It also wears down only one disk reducing the chance of both the disks evenly wearing out which increases the chances of both of them failing around the same time.

From the pull request:

> more read IO balancing strategies (experimental config), add two new
ways how to select a device for read if the profiles allow that (all RAID1*),
the current default selects the device by pid which is good on average
but less performant for single reader workloads
- select preferred device for all reads (namely for testing)
- round-robin, balance reads across devices relevant for the requested IO
range

Source: lore.kernel.org/lkml/cover.173

#btrfs #linux #linux_6_14 #filesystems #bcache #raid #raid1 #nas #selfhosting #selfhost

Just… Josh :BlobCatTrashed:jlw_the_jobber@polymaths.social
2025-06-06

Oh boy, setting up this #RAID array is gonna be an overnight ordeal πŸ€ͺ

Last time I manually set up raid (specifically #raid1) was with two 4 Tb drives. Which I do not recall taking too long; maybe an hour or two. Now I am doing four 12 Tb in #raid5. Good thing I am on summer break πŸ˜…

2025-05-10

@var it’s nice to have a separate dedicated computer for managing the backup. You really need to have all backup disks attached to SATA. USB is not reliable for backup purposes because is likely to lose data when a sudden power outage occurs. So if you have (for example) 4 disks that all attach to SATA, that is a lot of IO happening, which you really don’t want when you are using your computer for other things that may need that IO, especially games or multimedia. You’ll notice the performance hit if it is backups are happening on a computer that you use for other things.

Also, it’s nice that the NAS comes with software that takes care of things like software RAID-1 or #ZFS for you. Some #NAS products will do #RAID1 in hardware for you.

#tech #hardware #selfhosting

Sami Lehtinensl@pleroma.envs.net
2025-05-04
AI has gotten some training clearly from programmers? "It's not a bug or flaw. It's an artifact." - Great answer!!! - Why running "mount -a" repeatedly ignores all other mounted file systems, but for an #Btrfs #RAID1 mounts it gives an error (exit level 32) that it's already mounted. Ok? What's the logic here? #mount #linux
2025-04-12

Time to sort out my data backups accumulated over time and purge the unneeded old ones πŸ™ƒ

I was also thinking replacing them with SSDs but don't see much benefit atm, only cost.

Better if I make a NAS from the old miniITX system laying around (even if it's quite underpowered and missing some parts 😬 ) and use 2 of those HDDs in a RAID1... When I will feel myself not too lazy ofc πŸ˜€

#springcleanup #databackup #hdd #ssd #NAS #raid1

Couple of 2.5" HDDs with different labels "backup" on them
Petrus Hilariusphf@mastodon.de
2025-03-15

So ... I've been looking for a small machine that I can slap two SATA SSDs in for a long time. And I never even considered Mac Minis before. But apparently their "Server" range has space and cabling for two SATA3 disks. Do I have anyone "in reach" here who has experience with these boxes? Looking at "Late 2012 Server" right now because it has USB3 as well. Are they prone to overheating or otherwise exploding? Do they take Linux reasonably well? #macmini #raid1 #apple

Francesco Yoshi Gobbo :linux:frayoshi@qoto.org
2025-03-12

and this is what happens when a #lizard waltz around your #SATA cables :)
here a #repairing #scrub from the #RAID1 #BTRFS array of #HDD .

#Beware the lizards!! 🦎
#computer #computers #systems #linux #FS

2025-02-27

How I switched us.slackware.nl from lilo to grub

Today I finally switched my US server from lilo to grub as its bootloader.

The reason for doing it now, is that I usually do not have a remote IP console (KVM) to that physical server which is located in a US datacenter whereas I live in Europe. This server's storage is configured as software RAID1

alien.slackbook.org/blog/how-i

#Slackware #Software #gdisk #gpt #grub #lilo #mbr #raid #raid1

2025-02-04

Trying to get some decent perf out of an old HP Microserver with hybrid Linux #RAID1 (ssd+sata). It can be done!

nux.ro/Hybrid_RAID1_performanc

Robert Dahlemrobertdahlem
2024-12-02

@samurro
I had to ditch LVM. You just can't remove a drive and boot without manual intervention in initramfs.

The complete process is described here: dahlem-consulting.de/install-d

2024-11-22

I tried this solution serverfault.com/a/1144562 at least the installer goes through without a grub error, but the system still doesn't boot after the installation is through. Installing #debian 12 on a software #raid1 with #uefi seems like a high ask of the debian installer...

2024-11-21

@robertdahlem The question is how do I get a raid on my installation partition going. I want to have a #raid1 across two smaller disks where root is installed, the installer now fumbled (grub error) when I tried to do it manually.

2024-11-21

I am looking for a tutorial/advice/best-practice on how to setup a #debian server with multiple disks on #ext4. Machine for now should just be used as a fileserver until we integrate the #infrastructure into #proxmox. Still I am unsure how to format the disks. Looking at previous setups we used #raid1 for the root partition and #raid6 for all additional disks. I am just not sure how or where #lvm should come into play...

OggCampoggcamp
2024-10-13

Are you still RAID0-ing your OggCamp tee? Come and see @JonTheNiceGuy at our merch stand and consider adding some redundancy to your collection!

2024-10-06

Struggling to get #fedora #fedora40 server to install with root mountpoint on a #BTRFS #RAID1 file system.

Perhaps it's just not allowed? Perhaps grub can't handle it this early?

discussion.fedoraproject.org/t

Kevin Karhan :verified:kkarhan@infosec.space
2024-07-26

@ascherbaum yeah, makes sense...

Usually the system should resync /boot shortly after mounting in the pre-#dmraid #RAID1 configuration...

Kevin Karhan :verified:kkarhan@infosec.space
2024-07-26

@ascherbaum Reminds me.of non-#dmraid/preboot #RAID1 which I did setup on multiple occasions...

Bluszcz πŸ‡΅πŸ‡± 🌱πŸŽ₯πŸ“·πŸš²πŸ‘¨β€πŸ’»βž‘οΈπŸ¦Œbluszcz@pol.social
2024-06-18

O kurwa, dwa tygodnie? :D #raid #raid1 to #raid5

2024-05-27

pvmove 要移動 lvm raid 1 ζ™‚οΌŒδΈθƒ½η›΄ζŽ₯ `pvmove -n myvg/myraidlv /dev/sdz1`οΌŒθ€Œζ˜―θ¦ζ˜Žη’Ίε―«ε‡Ίθ¦η§»ε‹•ηš„ raid1 εˆ†ε€εοΌŒεƒ `pvmove -n myvg/myraidlv_rimage_0 /dev/sdz1` 。
εΎŒδΎ†ζƒ³ζƒ³ε¦‚ζžœζ˜―θ¦ζΈ…η©ΊοΌŒη›΄ζŽ₯ `pvmove /dev/sdz1` ζ‡‰θ©²δΉŸε―γ€‚
#lvmraid #raid1

Multi Purr Puss :verified:platymew@layer8.space
2024-04-22

Am i doing this right? πŸ€“

I want to convert a running #Ubuntu server, installed on encrypted #LVM, into a #RAID1 mirror.

This is what i ended up with, so far.

This is a test vm;
vda and vdb are zvols on the vm host
nmon shows 3 disk groups, 1 for both, and 1 for each

…it certainly looks like i'm actually mirroring / writing twice. πŸ‘

I have yet to massage /etc/crypttab, i'm aware. πŸ˜‰

my setup cheat sheet for the LVM mirror conversioncreating a large amount of random data on the freshly converted RAID1 mirror, and watching what the test vm storage does from the outside

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