Is it possible to extend a extended partition raw space in harddisk thru rhel 6
hi all,
As going thru LVM concepts in rhel 6, got hit with a question about "how to use the raw partition of an harddisk which extended volume is taken a bit"
please find the attached diagram...
is it possible to use this raw space with previously created extended partition without data loss or do we have to delete the previously created extended partition and create again with raw space ?
Hi
I have solaris 8 installed on Intel machine. the disk I have is IDE.
I would like to know how can I create a raw partition on an IDE disk.
Regards,
Raja (2 Replies)
I habe two hard disk in a RHEl box.I want to convert one of the hard disk to raw disk. Already linux file system is present in the hard disk.Please suggest some method (2 Replies)
Dear Friends ,
I am using Redhat Ent Linux 5.0 with a EMC storage which HDD space is 4 TB. After Installing RHEL 5 , I get 4 TB space available but when I am going to create a partition then the OS show 2TB available space . I cannot create a partition above 2TB space . Is there any limitation... (3 Replies)
Hello,
Im new here, and may be my question is stupid, but...
Today I run PGP Desktop decript on my 2nd partition ( D:\ ) and when decript finish, I restart my PC.Now when I try to open D:\ its give me: D:\ is not accessable and I lose my files :(
So I load Linux live CD ( knoppix ) and try to... (1 Reply)
Hi,
My linux server working with LVM partition and with /boot partition, now my /boot partition is full, now i need to extend my boot partition. can i know how to do it, without any data loss.
Regards,
M.Selva Prakash (4 Replies)
Hello Folks,
Greetings,
I am in need of extending the / partition for one of my SuSE linux Enterprise Server 11.1 which is running on VMware. I will be able to extend the virtual lun from the vshphere console but not sure how to extend the root partition from the OS end. I am not sure if I... (1 Reply)
Hi,
I had created a primary partition (/dev/sda3) and made ext3 file system on it.
then mounted it on a directory and touch a file (x) into this partition.
however, I want to remove this partition and recreate it as an empty partition. so I used 'd' in fdisk command and delete that partition.... (3 Replies)
Hi,
I need to extend a soft partition from 20G to 100G. New disk is already added as a meta device. This soft partition is already assigned to a guest LDOM. Can someone let me know the steps to increase soft partition so guest LDOM can recognize the new space.
Thanks (1 Reply)
Discussion started by: Gho
1 Replies
LEARN ABOUT ULTRIX
dkio
dkio(4) Kernel Interfaces Manual dkio(4)Name
dkio - disk interface
Syntax
#include <sys/fs.h>
#include <sys/ioctl.h>
Description
This section describes the ioctl (input/output controller) codes for all disk drivers. The basic ioctl (input/output controller) format
is:
#include <sys/fs.h>
#include <sys/ioctl.h>
ioctl(fildes, code, arg)
struct pt *arg;
The applicable codes are:
DIOCGETPT Indicates to the driver to store the information in the current partition table in the address pointed to by arg. The file
descriptor must be opened on the raw partitions, a or c.
DIOCGETPT does not change the partition table, but it does provide access to the partition table information.
DIOCSETPT Indicates to the driver to modify the current partition table with the information pointed to by arg.
The file descriptor must be opened on the raw partitions, a or c.
If the a or c partition is not mounted, only the partition table in the driver is modified. This temporarily modifies the
partition table of the disk. The modifications are overwritten with the default table when the disk is turned off and on.
If the a or c partition is mounted, both the partition table in the driver and the partition table in the primary
superblock are modified. This permanently modifies the partition table of the disk. This is not recommended. To change a
partition table permanently, use the command.
DIOCDGTPT Indicates to the driver to store the default information of the current partition table in the address pointed to by arg.
The file descriptor must be opened on the raw partitions a or c.
DIOCGETPT does not change the partition table, but it does provide access to the partition table information.
DKIOCGET Allows the user to receive generic disk information as defined in structdevget.
DKIOCACC This code is defined in It is currently unused.
Restrictions
These restrictions apply when using the DIOCSETPT ioctl code:
o You must have superuser privileges.
o You cannot shrink or change the offset of a partition with a file system mounted on it or with an open file descriptor on the entire
partition.
o You cannot change the offset of the a partition.
Examples
This example shows how to use the DIOGETPT ioctl code to print the length and offset of the a partition of an RZ23 disk:
#include <sys/types.h>
#include <sys/param.h>
#include <sys/fs.h>
#include <sys/ioctl.h>
main()
{
struct pt arg;
int fd, i;
/* Open the "a" partition of the disk you want to see */
if ( (fd = open("/dev/rz0a",0)) < 0 ) {
printf("Unable to open device
");
exit(2);
}
/* Get the partition information */
if ( ioctl(fd,DIOCGETPT,&arg) < 0 )
printf("Error in ioctl
");
printf("Length Offset
");
for ( i = 0; i <= 7; i++ ) {
printf("%d %d
",arg.pt_part[i].pi_nblocks,
arg.pt_part[i].pi_blkoff );
}
}
FilesSee Alsorz(4), disktab(5), fstab(5), chpt(8), diskpart(8), fsck(8), MAKEDEV(8), mkfs(8), tunefs(8)
RISC dkio(4)