···

       
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133
       
 
       
It's a common issue that the latest stable version of ZFS doesn't support the latest

     

       
134
       
134
       
 
       
available Linux kernel. It is recommended to use the latest available LTS that's compatible

     

       
135
       
135
       
 
       
with ZFS. Usually this is the default kernel provided by nixpkgs (i.e. `pkgs.linuxPackages`).

     

       
136
       
136
       
-
       


     

       
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137
       
-
       
Alternatively, it's possible to pin the system to the latest available kernel

     

       
138
       
138
       
-
       
version _that is supported by ZFS_ like this:

     

       
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139
       
-
       


     

       
140
       
140
       
-
       
```nix

     

       
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141
       
-
       
{

     

       
142
       
142
       
-
       
  boot.kernelPackages = pkgs.zfs.latestCompatibleLinuxPackages;

     

       
143
       
143
       
-
       
}

     

       
144
       
144
       
-
       
```

     

       
145
       
145
       
-
       


     

       
146
       
146
       
-
       
Please note that the version this attribute points to isn't monotonic because the latest kernel

     

       
147
       
147
       
-
       
version only refers to kernel versions supported by the Linux developers. In other words,

     

       
148
       
148
       
-
       
the latest kernel version that ZFS is compatible with may decrease over time.

     

       
149
       
149
       
-
       


     

       
150
       
150
       
-
       
An example: the latest version ZFS is compatible with is 5.19 which is a non-longterm version. When 5.19

     

       
151
       
151
       
-
       
is out of maintenance, the latest supported kernel version is 5.15 because it's longterm and the versions

     

       
152
       
152
       
-
       
5.16, 5.17 and 5.18 are already out of maintenance because they're non-longterm.

     

···

       
204
       
204
       
 
       


     

       
205
       
205
       
 
       
  unstable = makeZfsTest rec {

     

       
206
       
206
       
 
       
    zfsPackage = pkgs.zfs_unstable;

     

       
207
       
207
       
-
       
    kernelPackages = zfsPackage.latestCompatibleLinuxPackages;

     

       
207
       
207
       
+
       
    kernelPackages = pkgs.linuxPackages;

     

       
208
       
208
       
 
       
  };

     

       
209
       
209
       
 
       


     

       
210
       
210
       
 
       
  unstableWithSystemdStage1 = makeZfsTest rec {

     

       
211
       
211
       
 
       
    zfsPackage = pkgs.zfs_unstable;

     

       
212
       
212
       
-
       
    kernelPackages = zfsPackage.latestCompatibleLinuxPackages;

     

       
212
       
212
       
+
       
    kernelPackages = pkgs.linuxPackages;

     

       
213
       
213
       
 
       
    enableSystemdStage1 = true;

     

       
214
       
214
       
 
       
  };

     

       
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215