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disko

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disko - declarative disk partitioning - https://github.com/nix-community/disko101 Servers

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6 Jul 2025
@s:consortium.chatshelvacu

I cannot use Disko to add it to the existing pool and rebalance declaratively

I believe that's correct. I don't know of any tool that can do that, maybe you should make one!

06:54:45
@magic_rb:matrix.redalder.orgmagic_rbYeah disko cant do that sadly, such a tool would be extremely difficult to sell people on imo. One mistake and your whole pool goes poof10:36:10
@sigmasquadron:matrix.orgFernando Rodriguesi would appreciate an append-only tool that synced a disko configuration with the current partitioning layout. If you added a new disk to a pool, it'd handle the necessary setup for you, but if you removed a disk from the config, it wouldn't do anything.10:43:49
@lassulus:lassul.uslassulusin theory format does that, you can run it multiple times and it will do some of the actions (like adding a new disk if there is an empty new disk) or adding a new dataset to a zfs pool or adding an lv to an lvm vg11:01:45
@lassulus:lassul.uslassulusalthough that is a bit experimental and I didn't have the time to setup a full test suite yet11:02:04
@sigmasquadron:matrix.orgFernando Rodrigues running disko format on a working system is not something that screams "this is safe, don't worry wink wink" to anyone. 11:03:48
@lassulus:lassul.uslassulusit shouldn't :D (yet)11:05:16
@lassulus:lassul.uslassulusbut if someone has time and motivation to work on it, I can give guidance, or just wait until I'm done with the other things on my questlog :)11:06:09
@musicmatze:beyermatthi.as@musicmatze:beyermatthi.asI have the same issue with ZFS and datasets and so on. What I do is, use Disko to generate the shell scripts to create new datasets and then manually apply them. If I would add another disk, I would do the same steps.14:21:40
@musicmatze:beyermatthi.as@musicmatze:beyermatthi.as So far that worked nicely 14:21:47
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7 Jul 2025
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@vladexa:matrix.orgVladislav Grechannik Does anybody run multiple bcachefs subvolumes with encryption? It bothers me that it asks for a password each time on boot (in my case I have to enter my password 3 times for each subvolume) 17:31:33
@steeringwheelrules:tchncs.de@steeringwheelrules:tchncs.de are there any examples of zfs setup that works with hibernation? as far as I'm aware it only needs to not be used for the swap partition, but the rest of the drives (including nixos) can be zfs, right? 22:31:26
@magic_rb:matrix.redalder.orgmagic_rbNo, zfs shouldnt be used for hibernation period22:33:15
8 Jul 2025
@s:consortium.chatshelvacu
In reply to @steeringwheelrules:tchncs.de
are there any examples of zfs setup that works with hibernation? as far as I'm aware it only needs to not be used for the swap partition, but the rest of the drives (including nixos) can be zfs, right?
my understanding is that for hibernation, the hiberfile is loaded in initrd. If the zfs pool is also loaded/mounted for any reason during that initrd, then after the memory gets restored zfs will have inconsistent information about the pool. I wouldn't risk it
02:43:17
@magic_rb:matrix.redalder.orgmagic_rbYeah zfs has no safeguards against this case. So theoretically if you avoid the scenario above it may be safe. But even then its a very untested codepath, though to be honest so is suspend and that seems to be working completely fine06:02:53
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9 Jul 2025
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