(RFC) Supermount 2
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Quoted 5 lines · Matthew D. Pitts
I am starting to plan a new version of Supermount. I have some things I want to try out in it, and I will list them in this message. I am willing to accept any and all input on what I am wanting to call Supermount 2. Planned features of Supermount 2:
1) Auto-detection of filesystem type.
Meaning we will finally have CD-tracks visualized as WAV files? like CD-fs does? Same goes for multisession disks.
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2) Supermount modules for each filesystem type.
How is this on performance (first check for fs type than loading module? than disk is removed, unloading module and loading another one?)
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3) Built-in support for packet-writing. ( i.e. insert packet-writing formatted disk and it loads appropriate kernel modules. )
There may be other features added if there is an interest in them. I will need assistance with the packet-writing support. I am only planning to do this for the 2.5.x and later kernels, so if anyone else wishes to back-port it to an older kerenl series, by all means do so. I have wanted to make some kind of contribution to this project for some time and I feel that this is something that will be useful.
What about doing it in userspace? I remember seeing Alan Cox writing he had a proof of concept of something like this on some ftp server (sorry, cannot remember where).
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I am going to be making my prelminary code available to whomever wishes to see it once I get my Linux box back up.
sure
Danny
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Matthew D. Pitts
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3) Built-in support for packet-writing. ( i.e. insert packet-writing formatted disk and it loads appropriate kernel modules. )
There may be other features added if there is an interest in them. I will need assistance with the packet-writing support. I am only planning to do this for the 2.5.x and later kernels, so if anyone else wishes to back-port it to an older kerenl series, by all means do so. I have wanted to make some kind of contribution to this project for some time and I feel that this is something that will be useful.
What about doing it in userspace? I remember seeing Alan Cox writing he had a proof of concept of something like this on some ftp server (sorry, cannot remember where).
http://ftp.linux.org.uk/pub/linux/alan - you want volumagic. Its a demo of the theory (but quite usable).
Doing supermount in kernel is suprisingly hard, the locking and races you get into are not nice at all - ask Juan about that
Alan,
I suspect I'll hear from Juan on this. And I am going to look at your code...
I realize it will be hard if I start from scratch. Since I was planning to do it in 2.5.x it will be easier for me to learn how to avoid the problems that plague the older versions.
Matthew
----- Original Message -----
From: Alan Cox <[email protected]>
To: <[email protected]>
Cc: <[email protected]>; <[email protected]>
Sent: Monday, March 25, 2002 8:05 AM
Subject: Re: [Cooker] (RFC) Supermount 2
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3) Built-in support for packet-writing. ( i.e. insert packet-writing
formatted disk and it loads appropriate kernel modules. )
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There may be other features added if there is an interest in them. I
will need assistance with the packet-writing support. I am only planning to do this for the 2.5.x and later kernels, so if anyone else wishes to back-port it to an older kerenl series, by all means do so. I have wanted to make some kind of contribution to this project for some time and I feel that this is something that will be useful.
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What about doing it in userspace? I remember seeing Alan Cox writing he had a proof of concept of something like this on some ftp server (sorry, cannot remember where).
http://ftp.linux.org.uk/pub/linux/alan - you want volumagic. Its a demo of the theory (but quite usable).
Doing supermount in kernel is suprisingly hard, the locking and races you
get
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into are not nice at all - ask Juan about that
-
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----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Cc: <[email protected]>
Sent: Monday, March 25, 2002 7:21 AM
Subject: Re: [Cooker] (RFC) Supermount 2
Quoted 4 lines · Matthew D. Pitts
Quoted 2 lines
I am starting to plan a new version of Supermount. I have some things I
want to try out in it, and I will list them in this message. I am willing to accept any and all input on what I am wanting to call Supermount 2.
Quoted 5 lines
Quoted 3 lines
Planned features of Supermount 2:
1) Auto-detection of filesystem type.
Meaning we will finally have CD-tracks visualized as WAV files? like CD-fs does? Same goes for multisession disks.
I will try to do that, though it may mean hacking into the isofs driver.
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2) Supermount modules for each filesystem type.
How is this on performance (first check for fs type than loading module? than disk is removed, unloading module and loading another one?)
I haven't gotten that far, yet. How well it works depends a lot on how much of the information about the disk can be read by Supermount 2 when the disk is inserted.
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3) Built-in support for packet-writing. ( i.e. insert packet-writing
formatted disk and it loads appropriate kernel modules. )
Quoted 2 lines
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There may be other features added if there is an interest in them. I
will need assistance with the packet-writing support. I am only planning to do this for the 2.5.x and later kernels, so if anyone else wishes to back-port it to an older kerenl series, by all means do so. I have wanted to make some kind of contribution to this project for some time and I feel that this is something that will be useful.
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What about doing it in userspace? I remember seeing Alan Cox writing he had a proof of concept of something like this on some ftp server (sorry, cannot remember where).
I am going to go over Alan's code when I have a decent machine to work with...
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I am going to be making my prelminary code available to whomever wishes
to see it once I get my Linux box back up.
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sure
Danny
Quoted 3 lines
Matthew D. Pitts
-
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Please read the FAQ at http://www.tux.org/lkml/