Disks on AIX Post: 101046

10 More Discussions You Might Find Interesting

1. AIX

system disks on aix 5.3

hello i'm running on P570 box aix 5.3 8 cpus 24G ram there are 1850 users loged in to this box the problem is that the two sysytem disks busy all the time hdisk0 100% busy hdisk1 100% busy some one have an idea what writing to this disks? thanks ariec

2. AIX

Configurin EMC SAN disks on AIX

This may sound like an absolute rookie question, and it is. I have been working on Migrating our HP and Solaris servers to the new EMC SAN and know the routines backwards. Now we've suddenly got a new IBM server and I don't even know how to check if it is connected to the switch. Can someone...

3. Solaris

Re-using disks

I would like to know if I can move the disks from a V240 chassis into a V440 chassis to use the increased resources (CPU & Memory) to boost performance. I know you can move disks between V210/240 chassis's, but I'm not sure if this would work between 240s & 440s. Any help would be much appreciated.

4. AIX

Configuring new disks on AIX cluster

We run two p5 nodes running AIX 5L in a cluster mode (HACMP), both the nodes share external disk arrays. Only the primary node can access the shared disks at a given point of time. We are in the process of adding two new disks to the disk arrays so as to make them available to the existing...

5. AIX

how to detect removable disks or volume in AIX using command

Hi I am new to AIX and any help regarding the same would be really appriciated, thanks In advance. My priority issue is how to detect from command line that the volume / disk on AIX machine is a USB or removable disk /volume and if possible can we list out details for that disk / volume

6. AIX

SCSI PCI - X RAID Controller card RAID 5 AIX Disks disappeared

Hello, I have a scsi pci x raid controller card on which I had created a disk array of 3 disks when I type lspv ; I used to see 3 physical disks ( two local disks and one raid 5 disk ) suddenly the raid 5 disk array disappeared ; so the hardware engineer thought the problem was with SCSI...

7. AIX

A solution to the mkvg failure when adding iSCSI disks to AIX.

Previous forum threads have noted that AIX cannot use iSCSI disks because it fails when trying to add them to a volume group using mkvg. The failure is caused by AIX's use of the SCSI "WRITE AND VERIFY"(0x2e) command which some iSCSI targets do not support. We experienced the same problem using...

8. AIX

Issue with increasing size of SAN disks on AIX

HI, I have had an issue last night while trying to extend a filesystsem . chvg -g <vg> command cameback with an error 0516-1790 chvg: Failed bootinfo -s hdisk9. Ensure the physical volume is available and try again. 0516-732 chvg: Unable to change volume group u01vg. the VG has 1...

9. AIX

Stale PPs in AIX, failed disks.. how to replace?

I have a AIX 7.1 system that has 3 failed disks, 1 in rootvg and 2 in vg_usr1. Here is the output of lspv. # lspv hdisk0 00044d4dfbb11575 vg_usr1 active hdisk1 0000150179158027 vg_usr1 active hdisk2 ...

10. AIX

How to reclaim hard disks and IP's in AIX?

Hello I recently received a request to reclaim hard disks and IP addresses within an AIX system(s). THe file systems are no longer in use and the client has indicated that it is OK to remove them and reclaim the disks and release the IP's. Now, since the file systems belong to a Volume group I...

LEARN ABOUT MINIX

port

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

NAME

       mem, kmem, port - system memory, kernel memory and system ports

DESCRIPTION

       /dev/mem is a character device file that is an image of the main memory of the computer.  It may be used, for example, to examine (and even
       patch) the system.

       Byte addresses in /dev/mem are interpreted as physical memory addresses.  References to nonexistent locations cause errors to be returned.

       Examining and patching is likely to lead to unexpected results when read-only or write-only bits are present.

       Since Linux 2.6.26, and depending on the architecture, the CONFIG_STRICT_DEVMEM kernel configuration option limits the areas which  can  be
       accessed through this file.  For example: on x86, RAM access is not allowed but accessing memory-mapped PCI regions is.

       It is typically created by:

           mknod -m 660 /dev/mem c 1 1
           chown root:kmem /dev/mem

       The  file  /dev/kmem  is  the same as /dev/mem, except that the kernel virtual memory rather than physical memory is accessed.  Since Linux
       2.6.26, this file is available only if the CONFIG_DEVKMEM kernel configuration option is enabled.

       It is typically created by:

           mknod -m 640 /dev/kmem c 1 2
           chown root:kmem /dev/kmem

       /dev/port is similar to /dev/mem, but the I/O ports are accessed.

       It is typically created by:

           mknod -m 660 /dev/port c 1 4
           chown root:kmem /dev/port

FILES

       /dev/mem
       /dev/kmem
       /dev/port

SEE ALSO

       chown(1), mknod(1), ioperm(2)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux                                                               2015-01-02                                                              MEM(4)

10 More Discussions You Might Find Interesting

1. AIX

system disks on aix 5.3

Discussion started by: ariec

2. AIX

Configurin EMC SAN disks on AIX

Discussion started by: ronellevan

3. Solaris

Re-using disks

Discussion started by: Chains

4. AIX

Configuring new disks on AIX cluster

Discussion started by: dnicky