Re: [9fans] simplest disk filesystem
What is the motivation of choosing a distributed OS without wanting to explain how distributed operating systems work? the standard definition of distributed os rather excludes plan 9. - erik
Re: [9fans] simplest disk filesystem
Quoting erik quanstrom quans...@quanstro.net: What is the motivation of choosing a distributed OS without wanting to explain how distributed operating systems work? the standard definition of distributed os rather excludes plan 9. - erik Please document this standard, including which standards body ratified it. khm
Re: [9fans] simplest disk filesystem
It just seems like creating a fake os (as in, no one even intends to use this os) from scratch in order to explain a real os (as in, the goal is to finally understand or at least use this os) makes things even more difficult to understand. sl
Re: [9fans] simplest disk filesystem
Yes, maybe you’re right :) I’ll probably stick to the idea on just focus on devroot.c as someone suggested. On Jul 16, 2014, at 11:17 AM, s...@9front.org wrote: It just seems like creating a fake os (as in, no one even intends to use this os) from scratch in order to explain a real os (as in, the goal is to finally understand or at least use this os) makes things even more difficult to understand. sl
[9fans] simplest disk filesystem
Hi, What is the simplest storage filesystem in terms of code size in plan9? I’m looking for a very simple in-kernel filesystem. Maybe older version of plan9 was including such a filesystem? On Linux for instance the minixfs was probably the simplest filesystem. The dos must also be simple but it’s currently a fileserver which makes it sligtly more complicated.
Re: [9fans] simplest disk filesystem
/sys/src/cmd/ramfs.c? On Tue, Jul 15, 2014 at 11:53 AM, Yoann Padioleau p...@fb.com wrote: Hi, What is the simplest storage filesystem in terms of code size in plan9? I’m looking for a very simple in-kernel filesystem. Maybe older version of plan9 was including such a filesystem? On Linux for instance the minixfs was probably the simplest filesystem. The dos must also be simple but it’s currently a fileserver which makes it sligtly more complicated.
Re: [9fans] simplest disk filesystem
But I would like something that actually can persist … a real but simple storage persistent filesystem. On Jul 15, 2014, at 10:57 AM, andrey mirtchovski mirtchov...@gmail.com wrote: /sys/src/cmd/ramfs.c? On Tue, Jul 15, 2014 at 11:53 AM, Yoann Padioleau p...@fb.com wrote: Hi, What is the simplest storage filesystem in terms of code size in plan9? I’m looking for a very simple in-kernel filesystem. Maybe older version of plan9 was including such a filesystem? On Linux for instance the minixfs was probably the simplest filesystem. The dos must also be simple but it’s currently a fileserver which makes it sligtly more complicated.
Re: [9fans] simplest disk filesystem
I don't know anything about ramfs but maybe you can modify it to read all disk from storage then write back when done? Sounds really inefficient though. Maybe if it was done with system files it'd be more practical. AFAIK, but a bit off topic, DamnSmallLinux can do this. Maybe you'd like to check that out. On Tue, Jul 15, 2014 at 2:05 PM, Yoann Padioleau p...@fb.com wrote: But I would like something that actually can persist … a real but simple storage persistent filesystem. On Jul 15, 2014, at 10:57 AM, andrey mirtchovski mirtchov...@gmail.com wrote: /sys/src/cmd/ramfs.c? On Tue, Jul 15, 2014 at 11:53 AM, Yoann Padioleau p...@fb.com wrote: Hi, What is the simplest storage filesystem in terms of code size in plan9? I’m looking for a very simple in-kernel filesystem. Maybe older version of plan9 was including such a filesystem? On Linux for instance the minixfs was probably the simplest filesystem. The dos must also be simple but it’s currently a fileserver which makes it sligtly more complicated.
Re: [9fans] simplest disk filesystem
You van take a look to paqfs(4) (read-only) or flashfs(4). -- David du Colombier
Re: [9fans] simplest disk filesystem
I’m looking for a very simple in-kernel filesystem. What's motivating the desire for to be in-kernel? Nearly, every file system in Plan 9 runs in user space. All the ones that have been mentioned do. The only in-kernel file system in the labs' distribution is devroot which is read-only and intended only to provide enough bits to get the system up and running. 9atom also includes a devtinyfs that you could take a look at. BLS
Re: [9fans] simplest disk filesystem
I’m trying to make a tutorial explaining the code of a not too large kernel (9), but there are too many things to explain so I have to cut things. So having a simple fs which does not require to explain 9p, the rpc, the mount device, etc would be great. I know that explaining plan9 without 9p is kinda nonsense, but I would do that in another tutorial. On Jul 15, 2014, at 1:52 PM, Brian L. Stuart blstu...@bellsouth.net wrote: I’m looking for a very simple in-kernel filesystem. What's motivating the desire for to be in-kernel? Nearly, every file system in Plan 9 runs in user space. All the ones that have been mentioned do. The only in-kernel file system in the labs' distribution is devroot which is read-only and intended only to provide enough bits to get the system up and running. 9atom also includes a devtinyfs that you could take a look at. BLS
Re: [9fans] simplest disk filesystem
I’m trying to make a tutorial explaining the code of a not too large kernel (9), but there are too many things to explain so I have to cut things. So having a simple fs which does not require to explain 9p, the rpc, the mount device, etc would be great. In that case, I'd suggest using devroot since it's useful to know how things get bootstrapped and having a small set of files in the kernel image is a handy technique for embedded applications. Although it doesn't talk to any disk devices, you can point to the next tutorial and explain that most file systems run as user applications and communicate with the disks by way of 9p. BLS
Re: [9fans] simplest disk filesystem
Quoting Yoann Padioleau p...@fb.com: I’m trying to make a tutorial explaining the code of a not too large kernel (9), but there are too many things to explain so I have to cut things. So having a simple fs which does not require to explain 9p, the rpc, the mount device, etc would be great. I know that explaining plan9 without 9p is kinda nonsense, but I would do that in another tutorial. What is the motivation of choosing a distributed OS without wanting to explain how distributed operating systems work? khm
