Questions tagged [udev]
106 questions
2
votes
2 answers
/lib/udev/net.agent causing high CPU usage
We have a number of Soekris boxes running Debian Squeeze. They were installed through an automated process consisting of using deboostrap and copying it unto a Compact Flash card. We use puppet to manage the configuration of all these boxes.
Before…
Antoine Benkemoun
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vote
0 answers
LV creation on CentOS 7.7
[root@kvm3 ~]# lvcreate -L 2G storage-3 -n testing
/dev/storage-3/testing: not found: device not cleared
Aborting. Failed to wipe start of new LV.
It works fine with the following -Z option.
[root@kvm3 ~]# lvcreate -L 2G storage-3 -n testing -Zn
…
Jevin Gala
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1
vote
0 answers
If statements in udev rules
Is it possible to make statements in udev rules via if, else or case?
I imagine something like:
if [ $HOSTNAME == "host1" ]
then
ATTRS{idVendor}=="04a9", ATTRS{idProduct}=="", SUBSYSTEMS=="usb", MODE="0660", GOTO="local_usb_end"
fi
I did not…
Nico
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1
vote
1 answer
Dont use /dev/sd* for removable device
Today I almost erased my system with dd because I was going to write on my internal HDD (/dev/sdb*) instead of the removable usb (/dev/sdc*).
I want to make a udev rule to set any block usb under a completely different name, like /dev/remX*
Where X…
Lesto
- 111
- 4
1
vote
1 answer
Start Webcam App With Systemd On Linux
I have a simple application which streams video with a webcam called "streamer". I'd like to start "streamer" when my Linux device boots with systemd.
Next, I have the following systemd, service file,…
Frederick Ollinger
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1
vote
1 answer
Why does /dev/disk/by-id directory have cdrom device only and which one of /dev/disk/by-X is recommended for creating zfs pools?
Im running a ubuntu 16.04 machine in esxi enviroment, i am going through zfs on linux faq and it recommends to use /dev/disk/by-id for home servers due to inconsistent nature of /dev/sdX names but when i list files on /dev/disk the by-id only have…
sherpaurgen
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1
vote
1 answer
swapon & hibernate on power key
I have a laptop & I run Arch Linux. My laptop has a spinning hard drive rather than an SSD, so I hate swap. However, I need one to hibernate, and I want my laptop to hibernate every time power key is pressed or battery runs low. My idea now is to…
Ignat Insarov
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vote
0 answers
Scriptless automount for systemd Linux systems
What is the proper way to do a boot/hot-plug automount for ATA and USB storage devices on Linux systems using systemd without requiring a GUI or a user having to be logged in?
It seems that calling mount from a udev rule is no longer acceptable with…
user339676
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1
vote
0 answers
gnome -- create symlinks when mounting a file system
I'm not 100% sure where the problem is... udev or gnome or ...
Backstory:
I have an "IronKey". I have a udev rule that allows my IronKey to plug into my machine. After I've plugged it in, I go to the gnome desktop, select "Places" / "IronKey" ,…
hymie
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3 answers
Add swap partition on zram device using udev rule
System: CentOS 7
cat /etc/udev/rules.d/10-zram.rules
ACTION=="add", SUBSYSTEM=="block", KERNEL=="zram0", DRIVER=="", ATTR{disksize}=="0", ATTR{disksize}="512M", RUN+="/usr/bin/systemd-run /sbin/mkswap $env{DEVNAME}"
(/sbin/mkswap didn't work for me…
HTF
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1
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1 answer
Udev rule for changing 'max_sectors_kb' for all 'sd*' devices
I am having a problem creating a udev rule that sets max_sectors_kb to 1024 for sd* (sda,sdb,sdc etc...) devices under /sys/block/.
Specifically, a recent kernel change means the max IO is too large for my iSCSI SAN so I am trying to set it to 1024…
tomstephens89
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1
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1 answer
Disk renaming udev rule
I have two separate controllers, SATA and PATA.
I would like to rename drives connected to the PATA to hd[a-z], and their partitions to hd[a-z][0-9].
# udevadm info -a -p /sys/block/sdd
[...]
looking at device…
udev
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1
vote
1 answer
Script triggered by udev to examine partition tables and test if it's a ceph disk
I'm wanting to trigger using udev under CoreOS a script on disk add/remove.
The purpose/goal is to automatically mount ceph data partitions to a specific directory in preparation for starting/stopping osd's in ceph-docker.
1) Firstly, CoreOS uses…
hookenz
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1 answer
ID_FS_LABEL empty for luks volume
I have an LUKS encrypted partition on a disk. I would like to label it and have it available at /dev/disk/by-label.
The value used is ID_FS_LABEL to create the link in /dev/disk/by-label. That value can be extracted with vol_id.
The problem is that…
user300811
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1 answer
How can I inform a script called from a udev rule of the device that triggered the rule?
I've got a udev rule
ACTION=="add", SUBSYSTEM=="block", KERNEL=="vd[c-z]", ENV{DEVICE_NAME}="KERNEL" RUN+="/usr/local/bin/udevtest"
where devices vd[c-z] trigger the rule and call my script. I am trying to pass the exact name of the device that…
Andrew
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