Hi list, My goal is to duplicate some SD cards, to prepare 50 similar Raspberry Pi.
First, I made a tar of my master SD card (unmounted). Then I made a script, which creates 2 partitions (50 MB for boot, 14 GB for /), creates the file-systems (vfat and btrfs, default options), mounts the two partitions: mount $part2 $mnt -ocompress=zstd,space_cache=v2,autodefrag,noatime,nodiratime mkdir $mnt/boot mount $part1 $mnt/boot When untarring, I get many errors, like: tar: ./usr/lib/libreoffice/share/gallery/arrows/A45-TrendArrow-Red-GoUp.png : open impossible: No space left on device tar: ./usr/lib/libreoffice/share/gallery/arrows/A53-TrendArrow-LightBlue-TwoDirections.svg : open impossible: No space left on device tar: ./usr/lib/libreoffice/share/gallery/arrows/A27-CurvedArrow-DarkRed.png : open impossible: No space left on device tar: ./usr/lib/libreoffice/share/gallery/arrows/A41-CurvedArrow-Gray-Left.svg : open impossible: No space left on device Which usually results in unusable SD card. When the first errors occur, less than 1 GB has been written. I tried to change mount options, especially commit interval, but still got ENOSPACE. What I ended up doing is limiting write speed with: xzcat $archive | pv -L 4M | tar x (with -L 5M I start to get a couple of errors) Is there a better work around? Or a patch to test that could help? The machine that runs the script has: [jdg@tiare tar-install]$ uname -r 4.19.0-rc7-snx [jdg@tiare tar-install]$ btrfs version btrfs-progs v4.17.1 Thanks, -- Jean-Denis Girard SysNux Systèmes Linux en Polynésie française https://www.sysnux.pf/ Tél: +689 40.50.10.40 / GSM: +689 87.797.527
