Source: sysfsutils Version: 2.1.0+repack-4 Followup-For: Bug #604737 Dear Maintainer,
I was looking for a way to set i/o scheduler. sysfsutils works fine when you can explicitly specify every path, but wildcards (or other basic shell expansion) would make things more flexible. E.g. One can deploy a standard config even when machines will not always have the same disks. E.g. for VMs we might want: class/block/vd[a-z]/queue/scheduler = deadline I achieved this with a relatively simple modification of the load_conffile function in debian/sysfsutils.init (which gets deployed to /etc/init.d/sysfsutils). I'm presuming reportbug will ask if I have a patch to attach shortly? -- System Information: Debian Release: 8.8 APT prefers oldstable-updates APT policy: (500, 'oldstable-updates'), (500, 'oldstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system)
--- debian/sysfsutils.init 2013-05-02 17:10:06.000000000 +0100 +++ /home/alex/sysfsutils.init 2017-06-29 12:10:50.596302572 +0100 @@ -42,15 +42,17 @@ else log_failure_msg "unknown attribute $f2" fi - elif [ "$f1" -a -n "$f2" -a -z "$f3" ]; then - if [ -f "/sys/$f1" ]; then - # Some fields need a terminating newline, others - # need the terminating newline to be absent :-( - echo -n "$f2" > "/sys/$f1" 2>/dev/null || - echo "$f2" > "/sys/$f1" - else - log_failure_msg "unknown attribute $f1" - fi + elif [ -n "$f2" -a -z "$f3" ]; then + for path in /sys/$f1; do + if [ -f "$path" ]; then + # Some fields need a terminating newline, others + # need the terminating newline to be absent :-( + echo -n "$f2" > "$path" 2>/dev/null || + echo "$f2" > "$path" + else + log_failure_msg "unknown attribute $f1" + fi + done else log_failure_msg "syntax error in $CONFFILE: '$f1' '$f2' '$f3'" log_end_msg 1
