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2
votes
1answer
62 views

udev rule running setserial low_latency don't work

My server runs Ubuntu 14.04.1. I created udev rules in /etc/udev/rules.d/09-pps.rules to get GPS with PPS support work. KERNEL=="ttyS0", SYMLINK+="gps0", MODE="0666" KERNEL=="ttyS0", ...
20
votes
2answers
2k views

Why is my eth0 called eno16777736?

I've seen http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/, which describes the rationale for consistent/predictable device naming, and then the rules by which device ...
1
vote
0answers
56 views

Are /dev/disk/by-id symlinks unreliable?

I am provisioning a Nova server and Cinder volumes using a Heat template. In order to identify the Cinder volumes attached to my OpenStack server I would like to use the /dev/disk/by-id/... symlinks ...
1
vote
2answers
2k views

location of 70-persistent-net.rules in Centos 7

Please, give me a clue, where it's located? it's not under /etc/udev/rules.d anymore # find / -name "*persistent-net.rules" didn't find anything...
2
votes
2answers
352 views

How to write rules for persistent net names?

I know that a process generates persistent network card names based on rules found in /lib/udev/rules.d/75-persistent-net-generator.rules. I also know how to completely disable this process with a ...
11
votes
1answer
607 views

Why did rebooting cause one side of my ZFS mirror to become UNAVAIL?

I just recently migrated a bulk data storage pool (ZFS On Linux 0.6.2, Debian Wheezy) from a single-device vdev configuration to a two-way mirror vdev configuration. The previous pool configuration ...
2
votes
2answers
200 views

Consistent Naming of 10gbps Interfaces on Dell Host

I have some Dell hosts in our environment. I would like to be able to provide consistent network interface naming across platforms. I know that biosdevname attempts to make the interfaces consistent ...
2
votes
2answers
929 views

LVM: Duplicate VG name VolGroup00

I'm on a server that shows a duplicate VG name. How can I rename one of these VolGroups to get rid of this conflict? [root@dev-server dev]# lvs WARNING: Duplicate VG name VolGroup00: ...
2
votes
2answers
462 views

Boot failure with root on MD (RAID1) + LVM: udev event timing

A fresh install of Ubuntu Server 13.10 (x64) is having problems booting from its root volume located in md+lvm. I've kludged a solution for now, but I'd like to understand more about what's going on ...
0
votes
1answer
64 views

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 ...
-1
votes
1answer
565 views

Linux “/dev/SDA” goes read only file system on SDB device failure [closed]

i have a very peculiar issue that is running in my system. Using debian linux : My system boots up very normally with a primary and secondary hard disk. suddenly my secondary hard disk fails with ...
0
votes
1answer
145 views

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 ...
0
votes
1answer
67 views

How to find device in /dev

I have added a new virtual pci device to my debian6 VM (Virtual Machine). I can see the device via "lspci" command, but I cannot find it in /dev. Is it because it's not installed properly or it needs ...
0
votes
1answer
687 views

what is the use of /etc/udev/rules.d/70-persistent-net.rules file in rhel?

what is the use of /etc/udev/rules.d/70-persistent-net.rules file in linux? is anyother way to change interface name in linux other than 70-persistent-net.rules? Thanks.
2
votes
4answers
2k views

How to make RHEL have persistent local hdd name?

I have 2 identical Dell R720 servers running identical Oracle Enterprise Linux(RHEL)6.4. Both servers (supposedly) configured in exactly the same way. However, one of the servers is behaving ...
1
vote
0answers
132 views

udev rule for disconnection and hibernate/suspend

I have an external hard drive which contains different GPT partitions. One of them is a LVM partition. This partition is contained in a LVM volume group (called "volga"), which in turns splits into ...
4
votes
1answer
907 views

Can udev be 'restarted' without a reboot?

For the general case let's say that the virtual adapter for eth0 has been removed and replaced with another one. Either due to cloning or, more recently, a rash of MAC address conflicts. [Yes, a rash ...
4
votes
1answer
200 views

tape changers on Centos 6 enter flurry of activity upon boot, at udev start

I have two tape-changer robots (Quantum Superloader 3), one with parallel SCSI connectivity, the other with SAS. They were connected to a Centos 5 server, and boot would proceed normally. They are ...
0
votes
1answer
422 views

hotplugging drives from a fibre-channel cabin reports wrong size

First thing, we are not even sure this is a udev problem, but we need somewhere to start asking... We have a Hitachi fibre-channel SAN serving volumes to a couple of machines running ubuntu server ...
1
vote
1answer
3k views

How to restart udevd on RH/CentOS system?

For udevd there is no init.d script and manual page is not indicating how to restart it either. The process is holding a deleted file (lsof shows) and I need to release it by restarting udevd. How to ...
2
votes
0answers
526 views

udisks-daemon eating up all my memory

I'm operating a little storage server on debian, over the past months I've noticed the process udisks-daemon eating up almost all available memory. Is this just really aggressive caching or a memory ...
0
votes
1answer
130 views

udev only reports events for a USB device configuration, not for the USB device itself

I'm trying to execute a certain Python script on USB devices insertion. I need to handle all kinds of USB devices. I'm using a rule like this: SUBSYSTEMS=="usb", ENV{DEVTYPE}=="usb_device", ...
1
vote
1answer
292 views

MegaCli newly created disk doesn't appear under /dev/sdX

After having successfully added 2 new disks in a new RAID virtual drive (background initialization done), I would have exepected it to appear under /dev/sdh but it's not there (so, unusable). The ...
1
vote
1answer
3k views

Creating Persistent Drive Labels With UDEV Using /dev/disk/by-path

I have a new BackBlaze Pod (BackBlaze Pod 2.0). It has 45 3TB drives and they when I first set it up they were labeled /dev/sda through /dev/sdz and /dev/sdaa through /dev/sdas. I used mdadm to ...
0
votes
2answers
822 views

howto remove udev from centos(lxc-guest) without dependencies

i downloaded a openvz template for my lxc server to create a new centos 6.3 guest. Now the guest is not starting because udev is hanging in the boot process. Last time i didn't had this problem but ...
5
votes
3answers
4k views

Ubuntu: disable udev's persistent-net-generator.rules

I'm using Ubuntu 12.04 LTS server edition and I am modifying /etc/udev/rules.d/70-persistent-net.rules to define my own mappings of ethernet interfaces to MAC addresses; that file is initially ...
0
votes
1answer
33 views

Group access to device using udev

Short question. Is it a good idea to give a group of users access to certain devices by writing your own udev rules in linux? If not, what would be a better approach? I want the changes to be ...
0
votes
1answer
96 views

Device names on hotswap server. (Name by port rather than insert order?)

Is there a way to name devices such that any drive plugged into slot 1 is always named /dev/sda? Rather than just first drive inserted sda even though it's plugged into the last slot, second sdb ...
2
votes
1answer
287 views

udev rules in ubuntu

I was setting up some udev rules in Ubuntu 12.04 for my APC UPSs and I was using the included *-net.rules as reference. When I used ATTR{}=="" matching in my -ups.rules though it didn't work, I had ...
1
vote
4answers
4k views

eth0 and eth1 both assigned same IP on boot

I have a physical SLES 11 SP2 server on a Sun Fire x4140 that is giving me problems with networking upon reboot. The NICs are onboard. The networking appears successful during boot, but network ...
3
votes
2answers
3k views

Execute a command when a device is connected via USB

I currently have a system that backs up my Linux server onto a USB storage device on /media/usb. This all works correctly. However, I actually have 2 drives which we try to swap on a daily basis. Is ...
1
vote
0answers
119 views

lenny to squeeze upgrade, partitions disapper

I have an RealPrivateServer on OVH provider, I have completes the upgrade, but after all packages were upgraded, the system for some reason don't generate the disk devices in /dev properly. I had the ...
1
vote
2answers
401 views

udev rule execute 2 times

I've written a udev rule like this: SUBSYSTEM=="usb", ACTION=="add", RUN+="//root/usbmon/usb add %b" SUBSYSTEM=="usb", ACTION=="remove", RUN+="//root/usbmon/usb remove %b" now this usb script sends ...
5
votes
1answer
627 views

How to force mdadm to use udev device names rather than /dev/sdX

The question is mostly in the title already. mdadm and /proc/mdstat insist on listing md members by their "traditional" /dev/sdX names. What I want is for them to use the newer udev device names ...
1
vote
0answers
185 views

Udev rule doesn't create symlink

I have created a script which is supposed to run automatically when a specific USB-device is connected. I've based my udev rule on the this post: Linux (Ubuntu) run script upon USB mount My udev ...
2
votes
4answers
2k views

How to change persistent-net-generator.rules to be PCI bus dependent and not MAC based?

I am using CentOS 6.2 with VMware. I often have to clone my systems. Every time I clone it is adds a new rule to 70-persistent-net.rules file like so. SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ...
1
vote
2answers
2k views

/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 ...
0
votes
2answers
689 views

After applying patches and rebooting, RHEL 5.3 hangs on udev

I suspect that one of the packages in the last system updated is causing problems with the system rebooting. When I reboot, the server hangs on udev. Here are a list of the updates that preceeded ...
1
vote
1answer
1k views

how can i control where pci devices are mounted?

I have a machine with multiple capture cards in PCI express slots. For ease of trouble shooting stuff, I would like for the devices to appear on the OS in order of their physical position when I'm ...
0
votes
2answers
1k views

RHEL/CentOS reassign scsi device letter

if I remove the physical disk associated with /dev/sdb and add a new disk in the same slot, it will be assigned /dev/sdc (or whatever the next available letter is). Is there any way powered on that I ...
2
votes
1answer
278 views

Udev is creating too many devices

I have built a kernel and root file system for a vortexS86 processor using OpenEmbedded. When it comes up I have hundreds of device entries in the /dev directory. This include such items as ...
4
votes
2answers
1k views

Ubuntu Hardy : Testing for environment variables in udev rules doesn't seem to work

I have a Ubuntu 8.04 LTS (server edition), and I need to write a udev rule for it to act upon plugging a USB thumb drive. However, I need a different action depending on the filesystem of the drive. I ...
0
votes
1answer
207 views

Automounting with udev

Currently my distribution of choice (ArchLinux) has an automounting script like this: KERNEL!="sd[a-z][0-9]", GOTO="media_by_label_auto_mount_end" But that will automount only partitions up to ...
0
votes
2answers
375 views

Dbus or Udev command to locate connected hardware

It's a dumb question. Once I knew this command, I used it two or three months ago but now it seems I can't recall it. I tried to look for it using Google but nothing happened :( It's a dbus command ...
0
votes
3answers
732 views

udev: how can I extend a default rule to modify the ownership of a symlink?

I need to get some USB-serial devices into a particular user group to access them from an application. This is straightforward for the /dev/ttyUSB devices, where I can just use KERNEL="ttyUSB*", ...
0
votes
1answer
626 views

How to whitelist range of MACs in 75-persistent-net-generator.rules?

I have a Debian Squeeze (2.6.32-5) guest in KVM that has all virtio network interfaces, and their MACs are apparently blacklisted by udev as per /lib/udev/rules.d/75-persistent-net-generator.rules ...
0
votes
1answer
853 views

Debian Squeeze console not working after upgrade

We have upgraded a Debian Squeeze machine recently, which was installed in February 2010 and was never upgraded after that. After the upgrade, while booting the machine prints some messages and after ...
1
vote
4answers
1k views

Slow logical volume detection

I am experiencing some issues with test server lately. It was installed few days ago and worked OK until yesterday, when it did not wake up after reboot. Bootloader did not find root device. Error: ...
1
vote
4answers
5k views

Persistent changes to /proc/sys/sunrpc/tcp_slot_table_entries

I'm trying to make a persistent change to sunrpc.tcp_slot_table_entries on a Linux CentOS 5.5. This value has been found important for the performance of our NFS clients, and must be set before the ...
4
votes
4answers
1k views

Linux console - programmatical detection of which device a USB storage is assigned to

Every morning 9am we plug an external HD to our office server (always to the same USB port). Every day the HD is new, but all of them are made by the same manufacturer (Freecom). Everyday at 12am, a ...