Info on /dev/dm files

Operating Systems Linux Red Hat Info on /dev/dm files

07-03-2012

Registered User

18, 1

Join Date: Mar 2012

Last Activity: 11 December 2012, 4:28 AM EST

Posts: 18

Thanks Given: 8

Thanked 1 Time in 1 Post

Thanks a lot @Peasant and @admin_xor for the valuable information. That was exactly what i was looking for.

prithvirao17

View Public Profile for prithvirao17

Find all posts by prithvirao17

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. HP-UX

Dev/urandom and dev/random missing in 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

2. Red Hat

Changing grub from /dev/sda to /dev/sdb

Hi, Please suggest steps to change grub from /dev/sda to /dev/sdb,

3. Solaris

Why files get created with srwxrwxrwt under /dev/?

$ 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...

4. Shell Programming and Scripting

Automating partitioning setup of /dev/sda on /dev/sdc

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...

5. AIX

Problem in /dev/hd1 and /dev/hd9var

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...

6. AIX

Difference between /dev/hdisk and /dev/rhdisk

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 ...

7. Solaris

Lun remove, stuck in /dev/dsk and /dev/rdsk

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...

8. UNIX for Dummies Questions & Answers

Make /dev/null all the files

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 ....

9. Solaris

What is /dev/tty /dev/null and /dev/console

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 ??

10. UNIX for Dummies Questions & Answers

mv files to /dev/null

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

LEARN ABOUT DEBIAN

mkdevmaps

mkdevmaps(1M)						  System Administration Commands					     mkdevmaps(1M)

NAME

       mkdevmaps - make device_maps entries

SYNOPSIS

       /usr/sbin/mkdevmaps

DESCRIPTION

       The  mkdevmaps  command	writes	to standard out a set of device_maps(4) entries describing the system's frame buffer, audio, and removable
       media devices.

       The mkdevmaps command is used by the init.d(4) scripts to create or update the /etc/security/device_maps file.

       Entries are generated based on the device special files found in /dev. For the different  categories  of  devices,  the	mkdevmaps  command
       checks for the following files under /dev:

       audio	       /dev/audio, /dev/audioctl, /dev/sound/...
       tape	       /dev/rst*, /dev/nrst*, /dev/rmt/...
       floppy	       /dev/diskette, /dev/fd*, /dev/rdiskette, /dev/rfd*
       removable disk  /dev/dsk/c0t?d0s?, /dev/rdsk/c0t?d0s?
       frame buffer    /dev/fb

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Obsolete			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       allocate(1), bsmconv(1M), attributes(5)

NOTES

       mkdevmaps might not be supported in a future release of the Solaris operating system.

SunOS 5.10							    8 Oct 2003							     mkdevmaps(1M)

Red Hat