From: Terry Michaels <spare@...>
Date: 2010-10-16T12:58:33+09:00
Subject: Re: Getting the size of a block device

Joel VanderWerf wrote in post #946983:
> On 10/09/2010 05:35 AM, Brian Candler wrote:
>> Terry Michaels wrote:
>>> Obviously, I could wrap a system call around a Linux utility or read a
>>> proc file... but I am curious if there is a 'built-in' Ruby method.
>>
>> The ioctl is called BLKGETSIZE/BLKGETSIZE64, and a quick grep of the
>> ruby source code doesn't find it.
>>
>> Maybe someone else has published an extension which wraps the API
>> directly, but you could just use IO.ioctl directly.
>
> Does the sys-filesystem gem have something like that?
>
> http://rubyforge.org/docman/view.php/610/1562/sys-filesystem.html

I think this only tells the the block size of a mounted file-system. I 
would want to be able to find the size of any block device passed in to 
my program. Examples: unformatted hard drive; LVM partition; loop 
device.

-- 
Posted via http://www.ruby-forum.com/.