pramfs: persistent and protected RAM filesystem
cover pramfs: persistent and protected RAM filesystem
Hi all,
after the merge of pramfs in the LTSI kernel and after the "hot topic" NVM Mapping API, here a new submission of pramfs code. Even if the code won't be in mainline the review is really useful to me, so any comment is welcome.
The patch series is based on 3.5-rc2.
Pramfs documentation:
Git repo:
git://pramfs.git.sourceforge.net/gitroot/pramfs/pramfs
Marco
Quoted 3 lines · On Sun, June 10, 2012 Marco Stornelli wrote:
Hi all,
after the merge of pramfs in the LTSI kernel and after the "hot topic" NVM Mapping API, here a new submission of pramfs code. Even if the code won't be in mainline the review is really useful to me, so any comment is welcome.
Hello
I think we have here two cases:
1. "A block of non-volatile RAM separate for normal system memory", [documentation Pramfs] and
2. The whole RAM is non-volatile and so the whole situation is changed, and an NVM Mapping API is needed and "hotly" discussed.
For 1. your solution is a very good concept that is getting around issues solely related with specific optimizations for disc-based file systems, like the 2 problems described in the documentation of Pramfs, but
for 2. there is no need for a file system anymore, as we use it today while working with a computer system, because data needs not to be written to a file system at all, and so the file system will become something like a backup system in the most common use cases of a computing device, if I should describe it a little bit too provocative. In this case your approach taken to handle the 2 problems mentioned in the documentation of Pramfs would have to be driven further by focusing more on the management of the RAM, the power, and the long-term data storage (backup) for harmonizing Pramfs with them. A further point is to make Pramfs bootable, if this not already possible somehow.
Quoted 6 lines
The patch series is based on 3.5-rc2.
Pramfs documentation:
Quoted 7 lines
Git repo:
git://pramfs.git.sourceforge.net/gitroot/pramfs/pramfsMarco
Have fun
Christian Stroetmann
2012/6/10 Christian Stroetmann <[email protected]>:
Quoted 16 lines · On Sun, June 10, 2012 Marco Stornelli wrote:
Quoted 6 lines
Hi all,
after the merge of pramfs in the LTSI kernel and after the "hot topic" NVM Mapping API, here a new submission of pramfs code. Even if the code won't be in mainline the review is really useful to me, so any comment is welcome.
Hello
I think we have here two cases:
1. "A block of non-volatile RAM separate for normal system memory", [documentation Pramfs] and
2. The whole RAM is non-volatile and so the whole situation is changed, and an NVM Mapping API is needed and "hotly" discussed.
Quoted 14 lines
For 1. your solution is a very good concept that is getting around issues solely related with specific optimizations for disc-based file systems, like the 2 problems described in the documentation of Pramfs, but
for 2. there is no need for a file system anymore, as we use it today while working with a computer system, because data needs not to be written to a file system at all, and so the file system will become something like a backup system in the most common use cases of a computing device, if I should describe it a little bit too provocative. In this case your approach taken to handle the 2 problems mentioned in the documentation of Pramfs would have to be driven further by focusing more on the management of the RAM, the power, and the long-term data storage (backup) for harmonizing Pramfs with them. A further point is to make Pramfs bootable, if this not already possible somehow.
I have to say that this submission doesn't want to be a complete answer to the "NVM Mapping API", no way, but eventually only part of the solution. Pramfs was bootable, but the support was removed, however the modification would be easy.
Marco
* Marco Stornelli:
Quoted 3 lines
Pramfs documentation:
There doesn't seem to be an fsck. Is this correct?
2012/6/13 Florian Weimer <[email protected]>:
Quoted 7 lines
* Marco Stornelli:
Quoted 3 lines
Pramfs documentation:
There doesn't seem to be an fsck. Is this correct?
It's an ongoing work.
Marco
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Quoted 11 lines
Hi all,
after the merge of pramfs in the LTSI kernel and after the "hot topic" NVM Mapping API, here a new submission of pramfs code. Even if the code won't be in mainline the review is really useful to me, so any comment is welcome.
The patch series is based on 3.5-rc2.
Pramfs documentation:
Quoted 7 lines
Git repo:
git://pramfs.git.sourceforge.net/gitroot/pramfs/pramfsMarco
No news good news? No comments?
Marco