How to find partition size(s) when the install was automatic

[Jim Dandy]

This is something that is probably very simple to almost anyone on here but I have not figured it out yet. What I want to find out is how to find the size of my partitions. When I installed pclos it did everything and I skipped the custom partitions so it just did everything automatically. I don't know what size my root partition or swap partition is. I know the size of my drive, it is a 1 TB. Thanks for any help.

One more question while I am thinking of it. If I find out that the root partition is too small, how do I make it bigger. As I understand it root is where all your programs are located so I would like to have about 40 or 50 GB for it (unless that would be excessive).

[agmg]

Open up your terminal emulator (if you are using KDE its name is Konsole) and type: df
You should get something similar to this:

Code: [Select]

[agmg@localhost ~]$ df
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              13G  2.8G  9.3G  24% /
/dev/sda6              16G  562M   15G   4% /home
I think 50 or 60GB are just too many for / partition.
But if you find out that you need to resize your partitions, you can do it using a LiveCD (because these partitions have to be unmounted to be able to resize them) with diskdrake (More Applications -> Configuration -> Configure your computer -> Local Disks -> Manage disk partitions).
You can also use GParted or KDE Partition Manager. You can find many threads about partitioning inside the forum.

[tschommer]

Just open a terminal (e.g. Konsole) and type "df".

Example:

Code: [Select]

[torsten@schommer ~]$ df
File system           Size  Used Avail Use% Mounted on
/dev/sda5              20G  6,4G   12G  35% /
/dev/sda8             577G  188G  361G  35% /data
/dev/sda7              20G  9,4G  9,9G  49% /home
/dev/sda9              20G  5,7G   13G  31% /mnt/OTHER
/dev/sda10             20G  7,7G   11G  42% /mnt/OTHER2
/dev/sda2             245G   47G  198G  20% /mnt/WIN7

As you can see, my root partition has 20GB, but only 6.4GB used. I have all sorts of stuff installed (LibreOffice, games, etc.), and haven't reinstalled for the last 2 years. Therefore I'm pretty sure you'd have sufficient space if you allocate 20GB for root.

EDIT: agmg was even quicker 

[agmg]

EDIT: agmg was even quicker 

 

[Jim Dandy]

Thank you guys for telling me how to find out. Here is what it says:

[xxxxx@localhost ~]$ su

Password:

[root@localhost xxxxx]# df

Filesystem            Size  Used Avail Use% Mounted on

/dev/sda1              12G  5.4G  6.1G  47% /

/dev/sda6             915G   16G  900G   2% /home

[root@localhost xxxxx]#


No swap partition? How could that be?

[TerryN]

No swap partition? How could that be?

Swap partition is not listed by the df command (because it is not a mounted File System in that sense).  You can get the size of the swap space with the "free" command:

[terry@dell lst]$ free
             total       used       free     shared    buffers     cached
Mem:       4145472    3456688     688784          0     179268    1284056
-/+ buffers/cache:    1993364    2152108
Swap:      1044188          0    1044188

(size is in KBytes)
Or you can use fdisk -l against the disk device to list ALL partitions but you have to be root in order to have the required permission:

[terry@dell lst]$ su
Password:
[root@dell lst]# fdisk -l /dev/sda
<snip>
   Device Boot      Start         End      Blocks   Id  System
<snip>
dev/sda5       359631153   380595914    10482381   83  Linux
/dev/sda6       380595978   382684364     1044193+  82  Linux swap / Solaris
/dev/sda7       382684428   407761829    12538701   83  Linux
/dev/sda8       407761893   432453734    12345921   83  Linux

Terry.

[Bald Brick]

No swap partition? How could that be?

"df" doesn't show swap partitions. Nor does it show unmounted partitions.

[Jim Dandy]

Using the free command I got this:

Swap:      4088504     329676    3758828

[TerryN]

Using the free command I got this:

Swap:      4088504     329676    3758828

Which means your swap partition is 4GB.

Terry.

[Jim Dandy]

Please excuse this if it is a dumb question but is that good or bad? I had always heard that your swap partition should be about double your memory--is that right? My memory, assuming I am remembering it correctly, is 4GB.   

[pags]

Please excuse this if it is a dumb question but is that good or bad? I had always heard that your swap partition should be about double your memory--is that right? My memory, assuming I am remembering it correctly, is 4GB.   

If everything was automatic, and you are using a "current" release (i.e., not a test 64-bit, etc.), then the installed kernel will only see about 3.5 Gb RAM (include the full output of "free", if you want that confirmed).  In such a case, it would look like the install choose a size of swap that could be used to hibernate your PC...

[Jim Dandy]

Yes, the hibernation and sleep modes both work fine, or seem to anyway (I have used both).

[T6]

i just found this old article

http://www.cyberciti.biz/tips/linux-swap-space.html

"Here is my rule for normal server (Web / Mail etc):
Swap space == Equal RAM size (if RAM < 2GB)
Swap space == 2GB size (if RAM > 2GB)"

"My friend who is a true Oracle GURU recommends something as follows for heavy duty Oracle server with fast storage such as RAID 10:
Swap space == Equal RAM size (if RAM < 8GB)
Swap space == 0.50 times the size of RAM (if RAM > 8GB)"

the comments are interesting, if you can read them, they are informative too

i personally have 1 gb of ram but i only have seen maybe 300mbs of the swap used from 3 gbs available(i created it that big) so it was a waste of hard disk space

it also mentions that you should have double of ram in laptops for hibernate, something i have heard in the past but never used so can't confirm

i remember that someone on this forum said that you can have a system without a swap partition but never tried to do it, with 1 gb of ram you always feel that you are going to need swap  

[Jim Dandy]

I just opened Gparted (after I downloaded it from the repository) and got this:




If someone could tell me, or point me to a thread, about how to resize both my root and swap partitions I would be grateful. Root is much too small and my swap partition is about half the size it should be according to what I have always been told anyway. Thank you all again.

[Jim Dandy]

T6, according to your post my swap partition appears to be adequate. I guess I just need to resize the root partition since it is only slightly larger than 12 GB. I think I might like to have about 25 GB to insure adequate space for any programs I might want to install.