Sponsored Content
Top Forums UNIX for Dummies Questions & Answers What is /dev/mapper used for? Post 302846629 by rupeshkp728 on Sunday 25th of August 2013 05:18:22 AM
Old 08-25-2013
What is /dev/mapper used for?

I see a folder named "mapper" in /dev.
This folder "mapper" has some soft link to other folders.

What is mapper folder used for?
 

9 More Discussions You Might Find Interesting

1. 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 ?? (12 Replies)
Discussion started by: civic2005
12 Replies

2. Red Hat

device-mapper-multipath path [undef]

I have an HP blade with Qlogic HBA's connected to an EVA8000. I have downloaded the latest multipath.conf from HP's website. The drive presented to the server appears to be configured and working except the output of "multipath -l" shows for all paths. What is causing this output? mpath0... (2 Replies)
Discussion started by: manzier
2 Replies

3. Red Hat

Device Mapper Notations and LVM

Hi, I had a doubt regarding device mapper notations and their corresponding LVM volumes. I have configured a volume group with two logical volumes in it as root and swap. The entries in the /etc/fstab file show the dm notations namely, /dev/mapper/VolGroup00-LogVol01... (2 Replies)
Discussion started by: kanna_geekworkz
2 Replies

4. IP Networking

Network mapper based on zone files ?

Good morning, Say I have a zone file like this: ns.chicago.company.com. 86400 IN A 212.168.12.15 ns.casper.company.com. 86400 IN A 212.168.14.15 company.com. 86400 IN NS ns.aux.company.com. ns.aux.company.com. 86400 IN ... (2 Replies)
Discussion started by: BigBro
2 Replies

5. 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... (13 Replies)
Discussion started by: DustinT
13 Replies

6. 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... (3 Replies)
Discussion started by: Mohannad
3 Replies

7. 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... (12 Replies)
Discussion started by: RogerBaran
12 Replies

8. Red Hat

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

Hi, Please suggest steps to change grub from /dev/sda to /dev/sdb, (1 Reply)
Discussion started by: manoj.solaris
1 Replies

9. Red Hat

Linux bad superblock on /dev/mapper/VolGroup-lv_root

Hi Friends . my linux try to start very slowly after give it this error: mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup-lv_root, missing codepage or helper program, or other error in some cases useful info is found in syslog - try dmesg : tail or so Kernel panic... (3 Replies)
Discussion started by: blackjuan
3 Replies
rmf(1mh)																  rmf(1mh)

Name
       rmf - remove folder

Syntax
       rmf [ +folder ] [ -help ] [ -[no]interactive ]

Description
       The  command  removes all of the messages within the current folder, and then removes the folder itself.  If there are any files within the
       folder which are not part of MH, they are not removed, and an error message is displayed.

       You can specify a folder other than the current folder by using the +folder argument.  If you do not specify a folder, and cannot find  the
       current folder, asks you whether you want to delete instead.

       If the current folder is removed, it makes current.

       Note that the command irreversibly deletes messages that do not have other links, so use it with caution.

       If  the folder being removed is a sub-folder, the parent folder becomes the new current folder, and tells you that this has happened.  This
       provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list  and  returning  to  the  current
       folder from which the list was extracted.

       Using to delete a read-only folder deletes the private sequence and current message information from the file, without affecting the folder
       itself.	If you have sub-folders within a folder, you must delete all the sub-folders before you can delete the folder itself.

Options
       -help	 Prints a list of the valid options to this command.

       -interactive
       -nointeractive
		 Asks for confirmation before deleting a folder.  By default, deletes a folder and its messages without asking	for  confirmation.
		 If  you  specify  the	-interactive option, asks if you are sure before deleting the folder.  You are advised to use this option,
		 since when deletes a folder its contents are lost irretrievably.

Examples
       This example shows how asks for confirmation when the -interactive option is used:
       % rmf -interactive +test
       Remove folder "test"? y

Profile Components
       Path:   To determine the user's Mail directory

Files
       The user profile.

See Also
       rmm(1mh)

																	  rmf(1mh)
All times are GMT -4. The time now is 03:26 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy