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Operating Systems
Solaris
Help for add disk on solaris8
Post 302115003 by surainbow on Friday 20th of April 2007 04:05:45 AM
04-20-2007
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bash-2.03# vxdisk list
DEVICE TYPE DISK GROUP STATUS
c0t0d0s2 auto:none - - online invalid
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LEARN ABOUT OPENSOLARIS
kmem
mem(7D) Devices mem(7D) NAME
mem, kmem, allkmem - physical or virtual memory access SYNOPSIS
/dev/mem /dev/kmem /dev/allkmem DESCRIPTION
The file /dev/mem is a special file that provides access to the physical memory of the computer. The file /dev/kmem is a special file that provides access to the virtual address space of the operating system kernel, excluding memory that is associated with an I/O device. The file /dev/allkmem is a special file that provides access to the virtual address space of the operating system kernel, including memory that is associated with an I/O device. You can use any of these devices to examine and modify the system. Byte addresses in /dev/mem are interpreted as physical memory addresses. Byte addresses in /dev/kmem and /dev/allkmem are interpreted as kernel virtual memory addresses. A reference to a non-existent location returns an error. See ERRORS for more information. The file /dev/mem accesses physical memory; the size of the file is equal to the amount of physical memory in the computer. This size may be larger than 4GB on a system running the 32-bit operating environment. In this case, you can access memory beyond 4GB using a series of read(2) and write(2) calls, a pread64() or pwrite64() call, or a combination of llseek(2) and read(2) or write(2). ERRORS
EFAULT Occurs when trying to write(2) a read-only location (allkmem), read(2) a write-only location (allkmem), or read(2) or write(2) a non-existent or unimplemented location (mem, kmem, allkmem). EIO Occurs when trying to read(2) or write(2) a memory location that is associated with an I/O device using the /dev/kmem special file. ENXIO Results from attempting to mmap(2) a non-existent physical (mem) or virtual (kmem, allkmem) memory address. FILES
/dev/mem Provides access to the computer's physical memory. /dev/kmem Provides access to the virtual address space of the operating system kernel, excluding memory that is associated with an I/O device. /dev/allkmem Provides access to the virtual address space of the operating system kernel, including memory that is associated with an I/O device. SEE ALSO
llseek(2), mmap(2), read(2), write(2) WARNINGS
Using these devices to modify (that is, write to) the address space of a live running operating system or to modify the state of a hardware device is extremely dangerous and may result in a system panic if kernel data structures are damaged or if device state is changed. SunOS 5.11 18 Feb 2002 mem(7D)