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Wed, 12 Mar 2008
Climbing evening.
That was quite for a while that I did not climb, so today I've reopened
a season. It was surprisingly good training, although I did not that much,
but only couple of warming traverses and three new traces, which I tried before
though. One of them was noticebly complex, but extremely interesting.
For those who visit Skala-city
it is trace over yellow holds in the right corner with 6c+ category.
Complex, and I did not even expect to complete it without falls, but
everything was better than expected - of course I fell, but eventually completed.
At the I moved to the sauna and shower. Excellent finish of the day!
I like it.
/life :: Link / Comments (0)
(Cache) Coherent Remote File System sources are available now.
Zach Brown has
announced
CRFS source code openess.
CRFS is a network filesystem which works
with remote BTRFS volume and supports
cache on clients.
Here is a brief set of features CRFS supports:
- the user space server exports a private BTRFS volume
- the network protocol operates on ranges of BTRFS disk items
- the kernel client provides posix semantics by operating on items
- the server can grant and revoke client caches of data and metadata
CRFS protocol is very tied to how BTRFS is organized. For example there is natural
batching of some commads like the recursive delete commands, since btrfs keys
placed one-by-one, so there is no need for additional command to be sent, instead
the first one can be extended to cover wider key range.
As you might notice pohmelfs
was started as a competitor to crfs project, because the latter is interesting and was closed. Right
now pohmelfs has set of very interesting features crfs does not and likely will not support (like offline
working, different server filesystem support), also its todo list has plenty of very interesting
stuff, so it will not be closed. Instead I plan to proceed the competition (which is a bit
complex for me, since it is first filesystem I write and essentially I did not know what inode
before) and fully complete pohmelfs. Although I subscribed to crfs-devel :)
My new shiny servers will be installed today, so tomorrow I will start (re)implementation of
the ground ideas of
pohmelfs.
Stay tuned!
/devel/fs :: Link / Comments (3)
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