topic Re: how to create 1 1g ram drive in Operating System - Linux

how to create 1 1g ram drive

Donny Jekels — Tue, 25 Apr 2006 12:26:25 GMT

Does anyone know the procedure to setup a 1GB ram drive.

all the ram block devices that comes with the system is only 15MB

redhat linux.

Re: how to create 1 1g ram drive

Ivan Ferreira — Tue, 25 Apr 2006 12:38:26 GMT

When you compile the kernel, you define the maximum size for a ram disk. I don't know the maximum size that can be increased while reconfiguring the kernel.

Re: how to create 1 1g ram drive

Donny Jekels — Tue, 25 Apr 2006 14:19:05 GMT

for those who might need it one day

dd if=/dev/zero of=onegigram bs=1k count=102400
mke2fs -i 1024 -b 1024 -m 5 -F -v onegigram
mount onegigram /mnt/ramdisk/ -t ext2 -o loop

enjoy

Re: how to create 1 1g ram drive

Vitaly Karasik_1 — Tue, 25 Apr 2006 14:50:03 GMT

AFAIK, this won't create ramdisk. you should increaze ramdisk size using kernel boot parameter and "dd" to /dev/ram, not just regular file.
See http://fxr.watson.org/fxr/source/Documentation/ramdisk.txt?v=linux-2.6.9 for example.

Re: how to create 1 1g ram drive

Ivan Ferreira — Tue, 25 Apr 2006 15:11:30 GMT

That is not a file system on memory, that is a file system on a disk file.

Re: how to create 1 1g ram drive

Mike Stroyan — Tue, 25 Apr 2006 18:21:28 GMT

The tmpfs filesystem is effectively a RAM disk as long as the system has plenty of RAM. It will page out to swap if memory space starts to get tight. You can use the 'size' mount option to limit its maximum size.

sudo mkdir /mnt/ramdisk
sudo mount -t tmpfs -o size=1g tmpfs /mnt/ramdisk

Re: how to create 1 1g ram drive

Andrew Bruce — Wed, 26 Apr 2006 03:21:37 GMT

Hey, great idea!

You could create a 1GB RAM disk and set it up as swap. That way, your swap will run really fast!!

Just kidding! :-D

Regards,

Andy Bruce

ps No points for me please (unless you count entertainment value, then again, that'd probably be negative points... ;-)