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sdImage: use findmnt to get root device when resizing #58059

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Sep 20, 2019
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sdImage: use findmnt to get root device when resizing #58059

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4 changes: 3 additions & 1 deletion nixos/modules/installer/cd-dvd/sd-image.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -144,8 +144,10 @@ in
boot.postBootCommands = ''
# On the first boot do some maintenance tasks
if [ -f /nix-path-registration ]; then
set -euo pipefail
set -x
# Figure out device names for the boot device and root filesystem.
rootPart=$(readlink -f /dev/disk/by-label/NIXOS_SD)
rootPart=$(${pkgs.utillinux}/bin/findmnt -n -o SOURCE /)
bootDevice=$(lsblk -npo PKNAME $rootPart)

# Resize the root partition and the filesystem to fit the disk
Expand Down