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Update udev-usb-sync
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1 changed files with 53 additions and 6 deletions
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@ -1,18 +1,53 @@
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#!/usr/bin/bash
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#
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# script to tweak USB storage device filesystem sync
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# The script is part of udev-usb-sync package
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#
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# sources /etc/usb-dev-sync/usb-dev-sync.conf
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the Affero GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# @linux-aarhus - root.nix.dk
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#
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# configuration : /etc/usb-dev-sync/usb-dev-sync.conf
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# triggered by : /usr/lib/udev/rules.d/99-usb-sync.rules
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#
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# contributors: @megavolt (Manjaro Forum)
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# : @linux-aarhus (Manjaro Forum)
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# inspired by : @kwg (EndeavourOS Forum)
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#
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# Arguments provided by udev rule
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# $1: usb block device
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# $2: usb bandwidth reported by device
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#
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# default values (override in configuration file)
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#
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# block device is passed in $1
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# speed is passed as $2
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# defaults
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use_tweaks=1
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max_bytes=16777216
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use_bandwith=1
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max_ratio=50
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strict_limit=1
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max_bytes=16777216
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# speed defined values
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max_bytes_12=10485
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max_bytes_480=629145
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max_bytes_5000=655369
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max_bytes_10000=13107200
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# read user config
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# source configuratoin to override default values
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source /etc/udev-usb-sync/udev-usb-sync.conf
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if [[ "$use_tweaks" = 0 ]]; then
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exit 0
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fi
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@ -21,6 +56,18 @@ if [[ -z "$1" ]]; then
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exit 1
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fi
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echo "$max_bytes" > "/sys/block/$1/bdi/max_bytes"
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# if speed value is not present use default max_bytes
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[[ -z $2 ]] && use_bandwith=0
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# apply max_ratio
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echo "$max_ratio" > "/sys/block/$1/bdi/max_ratio"
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# apply strict limit
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echo "$strict_limit" > "/sys/block/$1/bdi/strict_limit"
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# apply max_bytes depending on speed value
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if [[ use_bandwith == 0 ]]; then
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# apply default value
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echo "$max_bytes" > "/sys/block/$1/bdi/max_bytes"
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else
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# apply bandwidth defined value
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echo "$max_bytes_$2" > "/sys/block/%1/bdi/max_bytes"
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fi
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