;; -*- mode: scheme; -*-
;; This is an operating-system configuration template of a
;; 64-bit minimal system for a Raspberry Pi with an NFS root file-system.
;; It neither installs firmware nor device-tree files for the Raspberry Pi.
;; It just assumes them to be existing in boot/efi in the same way that some
;; UEFI firmware with ACPI data is usually assumed to be existing on PCs.
;; It expects the boot/efi directory to be served via TFTP and the root
;; file-system to be served via NFS. See the grub-efi-netboot-bootloader
;; description in the manual for more details.
(use-modules (gnu)
(gnu artwork)
(gnu system nss))
(use-service-modules admin
avahi
networking
ssh)
(use-package-modules linux
raspberry-pi
ssh)
(define-public raspberry-pi-64-nfs-root
(operating-system
(host-name "raspberrypi-guix")
(timezone "Europe/Berlin")
(bootloader (bootloader-configuration
(bootloader grub-efi-bootloader-chain-raspi-64)
(targets (list "/boot/efi"))
(theme (grub-theme
(resolution '(1920 . 1080))
(image (file-append
%artwork-repository
"/grub/GuixSD-fully-black-16-9.svg"))))))
(kernel-arguments '("ip=dhcp"))
(kernel (customize-linux #:linux linux-libre-arm64-generic
#:extra-version "arm64-generic-netboot"
#:configs '("CONFIG_NFS_SWAP=y"
"CONFIG_USB_USBNET=y"
"CONFIG_USB_LAN78XX=y"
"CONFIG_USB_NET_SMSC95XX=y")))
(initrd-modules '())
(file-systems (cons* (file-system
(mount-point "/")
(type "nfs")
(device ":/export/raspberrypi/guix")
(options "addr=10.20.30.40,vers=4.1"))
%base-file-systems))
(swap-devices (list (swap-space
(target "/run/swapfile"))))
(users (cons* (user-account
(name "pi")
(group "users")
(supplementary-groups '("wheel" "netdev" "audio" "video"))
(home-directory "/home/pi"))
%base-user-accounts))
(packages (cons* openssh
%base-packages))
(services (cons* (service avahi-service-type)
(service dhcp-client-service-type)
(service ntp-service-type)
(service openssh-service-type
(openssh-configuration
(x11-forwarding? #t)))
%base-services))
(name-service-switch %mdns-host-lookup-nss)))
raspberry-pi-64-nfs-root
e and, more importantly, leaves 'removeUnusedLinks' with
fewer entries to traverse, thereby speeding it up proportionally.
Partly fixes <https://issues.guix.gnu.org/24937>.
* config-daemon.ac: Remove symlink hard link check and CAN_LINK_SYMLINK
definition.
* guix/store/deduplication.scm (%deduplication-minimum-size): New
variable.
(deduplicate)[loop]: Do not recurse when FILE's size is below
%DEDUPLICATION-MINIMUM-SIZE.
(dump-port): New procedure.
(dump-file/deduplicate)[hash]: Turn into...
[dump-and-compute-hash]: ... this thunk.
Call 'deduplicate' only when SIZE is greater than
%DEDUPLICATION-MINIMUM-SIZE; otherwise call 'dump-port'.
* nix/libstore/gc.cc (LocalStore::removeUnusedLinks): Drop files where
st.st_size < deduplicationMinSize.
* nix/libstore/local-store.hh (deduplicationMinSize): New declaration.
* nix/libstore/optimise-store.cc (deduplicationMinSize): New variable.
(LocalStore::optimisePath_): Return when PATH is a symlink or smaller
than 'deduplicationMinSize'.
* tests/derivations.scm ("identical files are deduplicated"): Produce
files bigger than %DEDUPLICATION-MINIMUM-SIZE.
* tests/nar.scm ("restore-file-set with directories (signed, valid)"):
Likewise.
* tests/store-deduplication.scm ("deduplicate, below %deduplication-minimum-size"):
New test.
("deduplicate", "deduplicate, ENOSPC"): Produce files bigger than
%DEDUPLICATION-MINIMUM-SIZE.
* tests/store.scm ("substitute, deduplication"): Likewise.
| Ludovic Courtès |
| 2020-12-15 | nar: Deduplicate files right as they are restored....This avoids having to traverse and re-read the files that we have just
restored, thereby reducing I/O.
* guix/serialization.scm (dump-file): New procedure.
(restore-file): Add #:dump-file parameter and honor it.
* guix/store/deduplication.scm (tee, dump-file/deduplicate): New
procedures.
* guix/nar.scm (restore-one-item): Pass #:dump-file to 'restore-file'.
(finalize-store-file): Pass #:deduplicate? #f to 'register-items'.
* tests/nar.scm <top level>: Call 'setenv' to set "NIX_STORE".
| Ludovic Courtès |
| 2020-12-15 | serialization: 'restore-file' sets canonical timestamp and permissions....* guix/serialization.scm (restore-file): Set the permissions and mtime
of FILE.
* guix/nar.scm (finalize-store-file): Pass #:reset-timestamps? #f to
'register-items'.
* tests/nar.scm (rm-rf): Add 'chmod' calls to ensure files are writable.
("write-file + restore-file with symlinks"): Ensure every file in OUTPUT
passes 'canonical-file?'.
* tests/guix-archive.sh: Run "chmod -R +w" before "rm -rf".
| Ludovic Courtès |
| 2020-12-15 | serialization: 'fold-archive' notifies about directory processing completion....* guix/serialization.scm (fold-archive): Call PROC with a
'directory-complete tag when done with a directory.
(restore-file): Handle it.
* guix/scripts/archive.scm (list-contents): Likewise.
* guix/scripts/challenge.scm (archive-contents): Likewise.
* tests/nar.scm ("write-file-tree + fold-archive"): Adjust accordingly.
| Ludovic Courtès |