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Delay nix-gc until /home is mounted

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Prevents starting the garbage collector before the remote FS are
mounted, in particular /home. Otherwise, all the gcroots which have
symlinks in /home will be considered stale and they will be removed.

See: #79
Reviewed-by: Aleix Roca Nonell <aleix.rocanonell@bsc.es>
This commit is contained in:
Rodrigo Arias 2024-09-18 11:04:44 +02:00
parent 1a0cf96fc4
commit 9a9161fc55
1 changed files with 15 additions and 0 deletions
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m/common/base/nix.nix
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@ -32,6 +32,21 @@
}; };
}; };
# The nix-gc.service can begin its execution *before* /home is mounted,
# causing it to remove all gcroots considering them as stale, as it cannot
# access the symlink. To prevent this problem, we force the service to wait
# until /home is mounted as well as other remote FS like /ceph.
systemd.services.nix-gc = {
# Start remote-fs.target if not already being started and fail if it fails
# to start. It will also be stopped if the remote-fs.target fails after
# starting successfully.
bindsTo = [ "remote-fs.target" ];
# Wait until remote-fs.target fully starts before starting this one.
after = [ "remote-fs.target"];
# Ensure we can access a remote path inside /home
unitConfig.ConditionPathExists = "/home/Computational";
};
# This value determines the NixOS release from which the default # This value determines the NixOS release from which the default
# settings for stateful data, like file locations and database versions # settings for stateful data, like file locations and database versions
# on your system were taken. It‘s perfectly fine and recommended to leave # on your system were taken. It‘s perfectly fine and recommended to leave