|
Home > Archive > Linux Debian support > December 2007 > quto / blocks
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
|
|
| Séverin Richard 2007-12-14, 7:14 am |
| Hi all,
I have a dedicated serveur gentoo.
I enconter problems managing disk quotas.
I thought that hard limit was in Mo, but it's obviously "blocks"
But trying to evaluate the size of a block give me unexpexted results:
1_ How can i know the size of my blocks??
i know 2 commands:
$$$> edquota username
and $$$> du /home/userdir
user1:
edquota gives me 156212 blocks
and du /home/user1 : 8 920 (Mo)
thus a block size is about: 8920 (000) / 156 212 == 57 o / block
user2:
edquota gives me 367 372 blocks
and du /home/user2: 28 964 (Mo)
thus a block size is here: 28 964 (000) / 367 372 == 78 o /block
What is the relation between "block" and disk usage????
How can i manage my disk quota in Mo.
This is a big problem because when quota exeeds, any file uploaded is
set to 0ko and erase the existing file. And all internet website goes wrong.
Thanks for help.
| |
| Pierre Brua 2007-12-14, 1:13 pm |
| Fri, 14 Dec 2007 12:44:41 +0100, Séverin Richard wrote_:
> I enconter problems managing disk quotas.
> I thought that hard limit was in Mo, but it's obviously "blocks"
> But trying to evaluate the size of a block give me unexpexted results:
>
> 1_ How can i know the size of my blocks??
The size of blocks on a filesystem (sda1 in our example) is shown by the
following command:
sudo dumpe2fs /dev/sda1|grep -i "block size"
The usage information given by edquota is only an indication and may be
inaccurate. In your case, the block size is probably 64KB
(8920*1024*1024/156212=59875).
If you stay below the 64KB*block count limit, I suppose you won't be
locked by the system. Avoid little files since each one eat 64K anyway. A
65K file will consume 2 blocks.
Hope it helps,
--
Pierre Brua
System & Application Engineer
http://pierrebrua.com/
| |
| Séverin Richard 2007-12-14, 1:13 pm |
| thank you Pierre,
Your answer is helpfull.
It is possible that my block size is: 64k
My ratio between Mo and blocks is 57 and 78, depending on small
files.(for 2 users)
but the command:
dumpe2fs /dev/sda1|grep -i "block size"
(
i also try:
dumpe2fs /dev/hdc11|grep -i "block size" found on the internet
)
doesn't work: it returns:
dumpe2fs 1.38 (30-Jun-2005)
dumpe2fs: Aucun périphérique ou adresse lors de la tentative d'ouverture
de /dev/sda1
(no device or adress during connexion to /dev/sda1)
which device stores my block size?
it isn't /dev/sda1, nor /dev/hdc11
can u help me to found the correct device?
best regards,
Pierre Brua wrote:
> Fri, 14 Dec 2007 12:44:41 +0100, Séverin Richard wrote :
>
>
>
> The size of blocks on a filesystem (sda1 in our example) is shown by the
> following command:
> sudo dumpe2fs /dev/sda1|grep -i "block size"
>
> The usage information given by edquota is only an indication and may be
> inaccurate. In your case, the block size is probably 64KB
> (8920*1024*1024/156212=59875).
> If you stay below the 64KB*block count limit, I suppose you won't be
> locked by the system. Avoid little files since each one eat 64K anyway. A
> 65K file will consume 2 blocks.
>
> Hope it helps,
| |
| Mark South 2007-12-14, 1:13 pm |
| On Fri, 14 Dec 2007 16:33:06 +0100, Séverin Richard wrote:
Séverin, please don't top post, OK?
> which device stores my block size?
>
> it isn't /dev/sda1, nor /dev/hdc11
> can u help me to found the correct device?
If you type "mount" without any parameters, it will show you which devices
are mounted and where. Example:
debian:~$ mount
/dev/hda1 on / type ext3 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
....
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
/dev/hda6 on /home type ext3 (rw)
Note the /dev/hda1 and the /dev/hda6 which are the / and /home partitions
respectively.
Mark
--
Signature: unable to mount signature device /dev/sig
|
|
|
|
|