1. You have to understand, in which "folder" there is not enough space. Every "folder" has some path. It can be e.g. /home/user/Downloads.
2. After you have found the path, you can check, if it is really a problem with a space in the filesystem. You can do it in easy way - df -g /your/own/path. For example:
Paste the output of the command above to the forum. From the command above you see:
File system device (/dev/hd1)
How many free space it has (3.07GB)
Where it is mounted on (/home)
All the parameters are required in the following steps.
If you have more then enough space on the filesystem, but you still can't create file, you have problem somewhere else.
3. If you don't have enough space in the filesystem, you usually can expand it. But first you have to find out, if you have enough space on your hard drives. All filesystems lay in volume groups. You can find a volume group, where your filesystem lays, using the following command:
hd1 here is the filesystem device from the output of df -g - /dev/hd1.
4. The usual way to look if you have enough space in the volume group is to use lsvg. For example:
rootvg in this case is from the output in the step 3.
5. As you can see in this example, the volume group has more than 20 GB free. It means that you can expand the filesystem by 20 GB. But I would suggest always to leave some spare capacity in a volume group. Let's say you want to add another 15GB to your filesystem. You get mountpoint from the step 2 - in our example it is /home, and execute the following command:
Please note plus sign after =. You have to be root or have similar authorizations to execute the command.
After that you can check, if the filesystem was expanded:
As a side note. There can be multiple different situations, then you can't write in the filesystem or even expand it, disregard of the free space in it. This is just a short intro, how to expand filesystems, not a full set of documentation and all possible troubleshooting techniques. If you have a problem, try always to be as specific as you can, noting all the commands you've executed and their output.
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