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nixos/make-ext4-fs: increase fudge factor from 1.03 to 1.10

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Turns out, on smaller images (~800MiB uncompressed sdcard image size),
the current fudge factor is way too small to even get the system to the
phase where it can resize itself.

I first tried with 1.05, but it wasn't enough.
This commit is contained in:
Florian Klink 2020-06-21 00:22:11 +02:00
parent cb0db58c18
commit 079de14fd3
1 changed files with 1 additions and 1 deletions
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2
nixos/lib/make-ext4-fs.nix
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@ -43,7 +43,7 @@ pkgs.stdenv.mkDerivation {
# Make a crude approximation of the size of the target image.
# If the script starts failing, increase the fudge factors here.
numInodes=$(find $storePaths ./files | wc -l)
numDataBlocks=$(du -s -c -B 4096 --apparent-size $storePaths ./files | tail -1 | awk '{ print int($1 * 1.03) }')
numDataBlocks=$(du -s -c -B 4096 --apparent-size $storePaths ./files | tail -1 | awk '{ print int($1 * 1.10) }')
bytes=$((2 * 4096 * $numInodes + 4096 * $numDataBlocks))
echo "Creating an EXT4 image of $bytes bytes (numInodes=$numInodes, numDataBlocks=$numDataBlocks)"