physical and logical disc, mount etc

10 More Discussions You Might Find Interesting

1. AIX

AIX unreadable sector Logical or Physical

Hello Folks, I have got this message: When I contacted support, they said this is logical filesystem error and it has to do with the filesystem. How can I find out ?

2. Linux

Logical Volume to physical disk mapping

When installing Linux, I choose some default setting to use all the disk space. My server has a single internal 250Gb SCSI disk. By default the install appears to have created 3 logical volumes lv_root, lv_home and lv_swap. fdisk -l shows the following lab3.nms:/dev>fdisk -l Disk...

3. UNIX for Dummies Questions & Answers

Confusion Regarding Physical Volume,Volume Group,Logical Volume,Physical partition

Hi, I am new to unix. I am working on Red Hat Linux and side by side on AIX also. After reading the concepts of Storage, I am now really confused regarding the terminologies 1)Physical Volume 2)Volume Group 3)Logical Volume 4)Physical Partition Please help me to understand these concepts.

4. Shell Programming and Scripting

Mount Points vs Physical Drives

Hi there i need a way ( some sort of script maybe) to check if a mont point exist when but the physical drive does not for example if i look in / and see that user_data2 directory exist but there is no user_data2 drive. another hurdle would be that some of the machines have raided drives...

5. Solaris

Why do controllers differ between physical and logical names

When I look at format I can see the following info: AVAILABLE DISK SELECTIONS: 0. c1t0d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424> /pci@1c,600000/scsi@2/sd@0,0 1. c1t1d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424> /pci@1c,600000/scsi@2/sd@1,0 Can anyone tell me...

6. Solaris

Physical and Logical Device Name

Dear all, Please can anybody explain me in detail what is the different between physical device name file and logical device name file. Please explain me clearly it's my request.

7. HP-UX

Unmount and remove all Logical vol.Volume group and physical disk

Hi, Someone please help me with how i can unmount and remove all the files systems from a cluster. This is being shared by two servers that are active_standby.

8. Linux

one nfs mount point for many logical volumes

hi i am wondering if it is possible to use one nfs mount point for several logical volumes. i have a top level directory /imaging with data1 - data50 below it. each dataX directory is a logical volume configured through LVM. if i mount them separately on the client (i.e. 50 lines in fstab...

9. Solaris

File system and disc mount

Hello All Well i m using sun fire and I want to view file system on each disc mount then what will be the commands?...like i want to get each disc like c0t0d0s0 and others and i want to see directories and files distributed on each discs.... with heartiest greetings nilanjan

10. AIX

Physical and Logical IP address

Hi all I need command to give logical and physical IP Address for my machine. thank you

LEARN ABOUT LINUX

hd

HD(4)							     Linux Programmer's Manual							     HD(4)

NAME

       hd - MFM/IDE hard disk devices

DESCRIPTION

       The  hd*  devices  are block devices to access MFM/IDE hard disk drives in raw mode.  The master drive on the primary IDE controller (major
       device number 3) is hda; the slave drive is hdb.  The master drive of the second controller (major device number 22) is hdc and	the  slave
       hdd.

       General	IDE block device names have the form hdX, or hdXP, where X is a letter denoting the physical drive, and P is a number denoting the
       partition on that physical drive.  The first form, hdX, is used to address the whole drive.  Partition numbers are assigned  in	the  order
       the  partitions	are  discovered,  and only nonempty, nonextended partitions get a number.  However, partition numbers 1-4 are given to the
       four partitions described in the MBR (the "primary" partitions), regardless of whether they are unused or extended.  Thus, the first  logi-
       cal  partition  will be hdX5.  Both DOS-type partitioning and BSD-disklabel partitioning are supported.	You can have at most 63 partitions
       on an IDE disk.

       For example, /dev/hda refers to all of the first IDE drive in the system; and /dev/hdb3 refers to the third DOS "primary" partition on  the
       second one.

       They are typically created by:

	      mknod -m 660 /dev/hda b 3 0
	      mknod -m 660 /dev/hda1 b 3 1
	      mknod -m 660 /dev/hda2 b 3 2
	      ...
	      mknod -m 660 /dev/hda8 b 3 8
	      mknod -m 660 /dev/hdb b 3 64
	      mknod -m 660 /dev/hdb1 b 3 65
	      mknod -m 660 /dev/hdb2 b 3 66
	      ...
	      mknod -m 660 /dev/hdb8 b 3 72
	      chown root:disk /dev/hd*

FILES

       /dev/hd*

SEE ALSO

       chown(1), mknod(1), sd(4), mount(8)

COLOPHON

       This  page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    1992-12-17								     HD(4)

UNIX for Dummies Questions & Answers