All Questions
8
questions
1
vote
1
answer
1k
views
Why am I able to mount arbitrary TMPFS as an unprivileged user with unshare?
While messing around with unshare, I stumbled on the following behavior in an unprivileged shell:
foo@pc $ id foo
uid=1000(foo) gid=1000(foo) groups=1000(foo),27(video),97(input)
foo@pc $ unshare -r -...
- 13
0
votes
0
answers
331
views
When mounting dir to RAM, will contents remain after computer reboot
I mounted a cache directory to tmpfs for faster performance on my website using this command:
tmpfs on /var/cache type tmpfs (rw,relatime,size=102400k,mode=777)
It seems to be working well, however, ...
- 103
1
vote
1
answer
2k
views
Differences between symlink to /tmp and tmpfs
I'm trying to make a read-only file-system (Raspbian). One common way is to place some directory (that are to be writable) in a tmpfs.
Example, I found some tutorials that suggest:
rm -rf /var/lib/...
- 438
16
votes
1
answer
20k
views
Why is a second "tmpfs" parameter necessary when mounting a tmpfs?
Excerpted from the documentation
So 'mount -t tmpfs -o size=10G,nr_inodes=10k,mode=700 tmpfs /mytmpfs'
will give you tmpfs instance on /mytmpfs which can allocate 10GB
RAM/SWAP in 10240 inodes ...
- 444
3
votes
1
answer
1k
views
Mount TMPFS instead of ro /dev
I am working on a ARM-Based embedded system with a custom Debian Linux based on kernel 2.6.31. In the final system, the Root file system is stored as squashfs on flash. Now, the folder /dev is created ...
- 41
3
votes
0
answers
8k
views
How do I unmount a tmpfs that is missing from /etc/mtab?
I have the following line in /etc/fstab:
none /home/hydra/tmp tmpfs user,noauto,size=1000M,uid=1001,gid=1001 0 0
I can do mount ~/tmp as user hydra and it gets mounted ok. The only problem is ...
- 150
4
votes
3
answers
2k
views
How can I allow normal users to mount tmpfs under subdirectories of their home directory?
How can I allow normal users to mount a tmpfs under any subdirectory owned by them?
- 219
0
votes
1
answer
366
views
/tmp broken: mount doesn't show anything
I'm on Ubuntu 9.04 and I've got the following problem:
The folder /tmp normally has a tmpfs mounted in it. On one machine, this isn't the case anymore. I don't know what happened to have it that way.
...
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