[9fans] fossil 'halt' command?
Hi, extract from the fossil paper: The block cache uses soft updates [1] to ensure that the on-disk file system is always self-consistent. Thus there is no halt console command and no need to check a file system that was shut down without halting. Fossil does have a halt command and does often need checking after an unexpected shutdown... Any reason why? Was it just observed that it was needed? Or that soft updates weren't enough? Thanks, -- vs
Re: [9fans] fossil 'halt' command?
i'd have thought that soft updates ensure consistency, but a halt command ensures that all the changes are actually written.
[9fans] GSoC status
Folks: GSoC progresses well. We have a preliminary slot allocation which should be finalized on wednesday. The list of accepted student proposals comes out a week from today. We're having a mentors meeting tomorrow to resolve any internal conflicts, and there's a GSoC-wide meeting for admins to resolve any issues there. We have the happy problem of more good applications than slots, but with our slot count and mentor set, I think we're in a really good position to ensure that all our students have a positive experience. Students, ensure you've gotten any last-minute comments in. Mentors, ensure you're up to date on the mailing list and evaluating applications. Everyone else: stay tuned, the big news comes a week from today. Anthony
Re: [9fans] fossil 'halt' command?
On Mon Apr 13 18:55:24 EDT 2009, fors...@terzarima.net wrote: i'd have thought that soft updates ensure consistency, but a halt command ensures that all the changes are actually written. i think your point is a good one and definately true (and begs the question of disk caches), but given the paper, one does wonder. halt didn't show up until here http://9fans.net/archive/2003/04/218 but there are later notes, e.g., http://9fans.net/archive/2003/11/66 that fossil was a bit difficult to shutdown cleanly. i'm not sure if that was in reference to the chicken-and-egg nature of the fossil/venti shutdown process or a problem with fossil. - erik
Re: [9fans] extensions of interest
Is it? It's probably a statistical certainty based on 9-fans being a fairly fixed-size group, which it does seem to be and human beings being remarkably similar in their ability to forget things. Max kudos to Russ as usual for spotting it. Let's wait another approx 4 years less 3 weeks and see what happens. On 12 Apr 2009, at 03:42, Anthony Sorace wrote: right on schedule! http://9fans.net/archive/2001/05/482 (may 31 2001) http://9fans.net/archive/2005/05/69 (may 7 2005) okay, that timing's just freaky.
