Difference between revisions of "File systems"
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| − | [[Category: | + | [[Category:peerix]] |
| − | + | The [[:Category:Kernel|Kernel]] requires a filesystem to start up. In unix terms this means it's ''/sbin/init'' or ''/linuxrc''. It's also important that the OS is able to read and write all common file systems. | |
| − | + | = FUSE = | |
| − | = | + | User-space implementation of a filesystem API. |
| − | + | *Requires kernel module that is standard in 2.6 kernels | |
| + | *Good examples of custom implementation | ||
| + | *See [[fs.c]] | ||
| + | |||
| + | = tmpfs = | ||
| + | ''tmpfs'' is a ram based file system that is discarded on shutdown. It may be easier to use tmpfs to store changing data as UnionFS seems still a bit immature and complicated. A tmpfs could be mounted at ''/etc''. At present we mount a tmpfs at ''/tmp'' by convention. | ||
| − | + | = UnionFS = | |
| − | + | Using UnionFS you can separate the read and write parts of a file system transparently. I propose to use this in the [[:Category:Media Center|Media Center]]. The main root file system is created in a [[w:CramFS|CramFS]] filesystem. CramFS is read only but is very fast to load and boot from. Once the kernel has booted an additional RamFS file system is created and UnionFS is used to send any writes to the new file system. | |
| − | = | + | *http://www.damnsmalllinux.org/f/topic-3-26-12858-0.html |
| − | + | ||
| − | *Requires | + | = NTFS = |
| − | * | + | ntfs-3g is a project giving unlimited read-write access to ntfs file system partitions. With this library and FUSE ntfs partitions can be treated almost transparently by linux. |
| − | ** | + | *Requires FUSE 2.6 |
| + | *[http://www.ntfs-3g.org/index.html#installation Installation notes] | ||
| + | *http://www.ntfs-3g.org/ | ||
| + | |||
| + | =See also= | ||
| + | *[[Virtual file systems]] | ||
Latest revision as of 01:19, 5 March 2007
The Kernel requires a filesystem to start up. In unix terms this means it's /sbin/init or /linuxrc. It's also important that the OS is able to read and write all common file systems.
Contents
FUSE
User-space implementation of a filesystem API.
- Requires kernel module that is standard in 2.6 kernels
- Good examples of custom implementation
- See fs.c
tmpfs
tmpfs is a ram based file system that is discarded on shutdown. It may be easier to use tmpfs to store changing data as UnionFS seems still a bit immature and complicated. A tmpfs could be mounted at /etc. At present we mount a tmpfs at /tmp by convention.
UnionFS
Using UnionFS you can separate the read and write parts of a file system transparently. I propose to use this in the Media Center. The main root file system is created in a CramFS filesystem. CramFS is read only but is very fast to load and boot from. Once the kernel has booted an additional RamFS file system is created and UnionFS is used to send any writes to the new file system.
NTFS
ntfs-3g is a project giving unlimited read-write access to ntfs file system partitions. With this library and FUSE ntfs partitions can be treated almost transparently by linux.
- Requires FUSE 2.6
- Installation notes
- http://www.ntfs-3g.org/
