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Btrfs Will Finally "Strongly Discourage" You When Creating RAID5 / RAID6 Arrays
I use ZFS because of issues like these. no regrets.
Thanked by 1that_guy
Then you have not been reading the stories of losing ZFS arrays.
The ‘bug’ (more incomplete implementation) with raid 5/6 is well known at this point, and raid 5/6 are a dying breed with modern large disks. Doesn’t seem like a particularly good reason to choose ZFS.
It’s an interesting situation where the public perception might be better if they didn’t support raid 5/6 at all. You see the same thing in video games, developers intentionally nerf capabilities so that people can feel better about themselves when their systems can run games on Ultra.
If you want a good reason to think twice about BTRFS, the ‘bug’ with BTRFS raid in conjunction with nodatacow/chattr +C is at least as bad and less well known.
And I say this as a happy btrfs user - great filesystem when you know its limits, and I prefer its design and tools to ZFS. I’m a bit surprised they chose to advertise the well known raid 5/6 issue and not the less well known raid+nodatacow issue
there should be no other raid then raid 10.
I have not most what iv heard is ZFS updating but DKMS module is lagging behind and causing issues.
or where people use the FUSE module
My oldest array is 5ish years strong now. no hickups besides updating.
Do many people even use software RAID5 or 6? I thought people that use those RAID levels primarily use hardware RAID...
Why would someone use a copy-on-write file system and then explicitly disable copy-on-write? 🤔
they fail and fail so hard to the point you won't find a controller to replace them. hardware RAID left a very bad taste in my mouth a few months ago.
Isn't the whole idea behind striped arrays is the ability to lose any n drives where n is the number of drives being used as striped storage.
Raid 10 if you lose the wrong pair of drives the data becomes lost.
Wouldn't it be better to be able to lose 2 any drives?