-Adam
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Subject: Re: how to get the size of a disk partition from user space?
From: "Roberto A. Foglietta" <roberto.foglietta@xxxxxxxxx>
Date: Mon, May 19, 2008 6:24 am
To: "Adil Mujeeb" <mujeeb.adil@xxxxxxxxx>
Cc: "Michael Blizek" <michi1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx.com>,
kernelnewbies@xxxxxxxxxxxx
2008/5/19 Adil Mujeeb <mujeeb.adil@gmail.com>:
> On 5/19/08, Michael Blizek <michi1@michaelblizek.twilightparadox.com> wrote:
>> On 07:55 Sun 18 May , Robert P. J. Day wrote:
>> >
>> > possibly slightly off-topic, but i've been handed (not at hand at
>> > the moment, though) an embedded system running 2.4.26, which has a
>> > bunch of flash-based partitions corresponding to the device files
>> > /dev/scsi/host-?/bus0/target0/lun0/part-?.
>> >
>> > what i want is a quick way to determine the size in bytes of those
>> > partitions. will there be entries for them in /proc/partitions? is
>> > there a better way? they won't necessarily be mounted; in fact, they
>> > probably won't be. thoughts? thanks.
>>
>> cat /sys/block/hda/hda1/size
>> -Michi
>> --
>
> it display the data in which unit?
> On my system, the output is as follows:-
>
> adil@localhost:~> df -h
> Filesystem Size Used Avail Use% Mounted on
> /dev/sda1 10G 4.7G 5.3G 47% /
> udev 466M 208K 466M 1% /dev
> /dev/sda5 43G 14G 27G 35% /home
> /dev/sda7 20G 7.1G 12G 39% /home1
>
> adil@localhost:~> cat /sys/block/sda/sda1/size
> 20900502
> adil@localhost:~> cat /sys/block/sda/sda5/size
> 91570437
>
> These outputs are not matching with the first one.
> Am I missing anything??
if block size would be 512 bytes then 91570437 / 2 / 1024 / 1024 = 43.3 GB
Cheers,
--
/roberto
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