07-02-2012
Here is from another document,
Device Mapper Support for the udev Device Manager :
NOTE: /dev/dm-N nodes should never be used in scripts to access the device since the N number is assigned dynamically and changes with the sequence of how devices are activated. Therefore, true names in the /dev/mapper directory should be used. This layout is to support udev requirements of how nodes/symlinks should be created.
These 2 Users Gave Thanks to Peasant For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
im having trouble with moving files in a directory into /dev/null
for file in $HOME/.trashcan/
do
mv $file /dev/null
done
the error msg i get is:
mv: /dev/null: not a directory.
does anyone know how to fix this?
thanks
primal (16 Replies)
Discussion started by: primal
16 Replies
2. Solaris
Hi, Anyone can help
My solaris 8 system has the following
/dev/null , /dev/tty and /dev/console
All permission are lrwxrwxrwx
Can this be change to a non-world write ??
any impact ?? (12 Replies)
Discussion started by: civic2005
12 Replies
3. UNIX for Dummies Questions & Answers
How can I make /dev/null all the 8640 files that I am getting from this command.
find . \( ! -name . -prune \) -type f -name "EXPORT_v1x0*" | awk -F'_' '$6<20120812'
And then delete everything.
If I am using this command to delete it, I am getting Disk Quota Exceeded Exception.
find .... (4 Replies)
Discussion started by: raihan26
4 Replies
4. Solaris
So, we removed a LUN from the SAN and the system is refusing to remove the references to it in the /dev folder. I've done the following:
devfsadm -Cv
powermt -q
luxadm -e offline <drive path>
luxadm probe
All those commands failed to remove the path. The drive stills shows up as <drive... (13 Replies)
Discussion started by: DustinT
13 Replies
5. AIX
Hi,
How can i check that i am using RAW devices for storage in my AIX machine...
Also after adding a LUN from storage to a aix host, when i check /dev in the host, i can see both rhdisk and hdisk with same number
eg:
dcback1(root):/dev>ls -lrt | grep disk12
crw------- 1 root ... (4 Replies)
Discussion started by: jibujacob
4 Replies
6. AIX
Hello AIXians,
I can't boot my AIX, it hangs and stops at the code error: 0518
After searching google, I knew the problem is due to problems in File Systems.
So the solution is booting from any bootable media, then run these commands in maintenance mode:
#fsck -y /dev/hd4
#fsck -y... (3 Replies)
Discussion started by: Mohannad
3 Replies
7. Shell Programming and Scripting
Objective: To recreate the partitioning setup of /dev/sda on /dev/sdc
How would I parse the below information and initialize variables
(an array?) that can be used to build sgdisk commands in a script, regardless of the number of partitions?
Something along the lines of:
sgdisk -n... (12 Replies)
Discussion started by: RogerBaran
12 Replies
8. Solaris
$ uname -a
SunOS myhost 5.11 11.2 sun4v sparc sun4v
I see following 0 byte (regular)files getting created under /dev/mydisks directory :
srwxrwxrwt 1 gusr dba 0 Sep 14 23:57 VF_10
srwxrwxrwt 1 gusr dba 0 Sep 14 23:57 DATA1
srwxrwxrwt 1 gusr dba 0 Sep 14 23:57... (8 Replies)
Discussion started by: YShivak
8 Replies
9. Red Hat
Hi,
Please suggest steps to change grub from /dev/sda to /dev/sdb, (1 Reply)
Discussion started by: manoj.solaris
1 Replies
10. HP-UX
Hi,
In our HP-UX B.11.11. I could not find dev/urandom and dev/random
Are all pseudo-devices implemented as device drivers, or in need to run /configure some package to install the package to have dev/urandom.
Please help (4 Replies)
Discussion started by: rashi
4 Replies
LEARN ABOUT DEBIAN
aoe-mkdevs
aoe-mkdevs(8) System Manager's Manual aoe-mkdevs(8)
NAME
aoe-mkdevs - create special device files for aoe driver
SYNOPSIS
aoe-mkdevs {device-dir}
env n_partitions=1 aoe-mkdevs {device-dir}
DESCRIPTION
The aoe-mkdevs command is deprecated in favor of udev. Systems with udev do not need to use the aoe-mkdevs or aoe-mkself commands, because
udev will create device nodes as needed.
Systems without udev use aoe-mkdevs to create the character special files necessary to control the aoe driver. The aoe-mkdevs command uses
aoe-mkshelf to also create block special files.
The aoe drivers after version 49 support dynamic minor device numbers so that a greater number of devices can be supported. The aoe-mkdevs
command is incompatible with dynamic device numbers. If your system lacks udev, and you are using an aoe driver version 50 or above, use
the aoe_dyndevs=0 module option to force the aoe driver to use static device numbers.
If you are not using dynamic device numbers, and you built your aoe driver to support only one partition per device (whole-disk parti-
tions), then the device files must match, and you should use the n_partitions environment variable described below.
Arguments
device-dir
This should be the name of the directory where the special device files will be created.
ENVIRONMENT VARIABLES
If the n_partitions variable is set in the environment, it will override the default number of partitions per aoe disk, namely 16.
EXAMPLE
In this example, the root user on a host named nai creates special files for using the aoe disks in shelf 7. After remembering that the
driver doesn't have partition support, this sysadmin gets rid of the mismatching device nodes and calls aoe-mkdevs again with n_partitions
set to 1.
nai:~# rm -rf /dev/etherd
nai:~# aoe-mkdevs /dev/etherd
nai:~# ls /dev/etherd | wc -l
1603
nai:~# rm -rf /dev/etherd
nai:~# n_partitions=1 aoe-mkdevs /dev/etherd
nai:~# ls /dev/etherd | wc -l
103
SEE ALSO
aoe-discover(8), aoe-interfaces(8), aoe-mkshelf(8), aoe-stat(8), aoetools(8), udev(7).
AUTHOR
Ed L. Cashin (ecashin@coraid.com)
aoe-mkdevs(8)