diff --git a/99-usb-sync.rules b/99-usb-sync.rules index 8c4369e..e8d98f6 100644 --- a/99-usb-sync.rules +++ b/99-usb-sync.rules @@ -1,3 +1,11 @@ -# rule to disable write cache for usb storage +# +# rule to disable write cache for usb storage that supports write-cache command # requires hdparm to be installed ACTION=="add|change", KERNEL=="sd[a-z]", ENV{ID_USB_TYPE}=="disk", RUN+="/usr/bin/hdparm -W 0 /dev/%k" +# +# the following rules is introduced with kernel 6.2 +# https://docs.kernel.org/admin-guide/abi-testing.html#abi-sys-class-bdi-bdi-strict-limit +# https://docs.kernel.org/admin-guide/abi-testing.html#abi-sys-class-bdi-bdi-max-ratio +# https://docs.kernel.org/admin-guide/abi-testing.html#abi-sys-class-bdi-bdi-max-bytes +ACTION=="add|change", KERNEL=="sd[a-z]", ENV{ID_USB_TYPE}=="disk", RUN+="/usr/bin/echo 1 > /sys/block/%k/bdi/strict_limit", RUN+="/usr/bin/echo 50 > /sys/block/%k/bdi/max_ratio", RUN+="/usr/bin/echo 16777216 > /sys/block/%k/bdi/max_bytes" + diff --git a/PKGBUILD b/PKGBUILD index 01e1ba3..10102c9 100644 --- a/PKGBUILD +++ b/PKGBUILD @@ -1,15 +1,15 @@ -# Maintainer: +# Maintainer: root.nix.dk pkgname='udev-usb-sync' pkgver=0.1 -pkgrel=1 -pkgdesc='Disable writecache when USB storage device is plugged' +pkgrel=2 +pkgdesc='Finetune writecache when USB storage device is plugged' arch=('any') url='https://codeberg.org/wonky/udev-usb-sync' license=('MIT') depends=('hdparm') provides=("${pkgname}") source=('99-usb-sync.rules') -sha256sums=('ed0253bbbd5b64529efd752978ba17176e3ff23d3f7f220bbacd3fa3a3691df9') +sha256sums=('012b9991a9eee3149eb27e8d3c7b4d40b56bbfe2030ce84823a90c968410f8d0') package() { install -d -m755 $pkgdir/etc/udev/rules.d