Originally posted by jacob
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Btrfs To Ship Multiple Performance Improvements In The Next Linux Kernel
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Originally posted by aht0 View Post
Don't know what happens in the Netherlands, but it certainly doesn't reflects global website shares.
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Originally posted by ssokolow View Post
People use "Linux" to mean two things: The kernel and, for lack of an equally concise alternative, the platform. Android doesn't meet that second definition because it can't natively run "Linux" binaries and aims to be a very distinct platform of its own.
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Originally posted by jacob View PostWhat does that even mean? Linux is a kernel, nothing more, nothing less. "Running Linux" means precisely and only that, running an OS whose kernel is Linux. Android users "run Linux" exactly in the same way as Ubuntu, Fedora or Debian users. Most distros have their own modified kernels too, by the way. Especially in the case of Ubuntu these modifications are particularly extensive to the point of the distro being partly incompatible with upstream kernels.
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Originally posted by aht0 View PostIf you had bothered to check, you'd notice that IBM started it's support for Linux back in 1999. Oct 1998 FreeBSD 3.0-RELEASE with initial SMP support was released. Which was quite problematic. By the time of 4.0-RELEASE which had fixed these issues (Spring 2000), train had passed.
Originally posted by aht0 View PostYou understand licenses quite wrong. BSD license does not denounce ownership/authorship, it's just giving user more freedom to do with the software as they please. Author remains author and he/she could sue you, if you removed the relevant authorship-headers from sources. You could fork it and relicense your fork under GPL but the original author has to remain that.
That's a "freedom" lots of open source contributors will happily do without, thank you very much. For some reason the BSD community is strongly attached to that and that's their right. I don't expect them, or you, to actually try to understand the GPL's logic, but no-one can deny that Linux has thrived under the GPL. So I don't see anything to suggest that Linux would have done better under another licence, especially since while there are many open-source OSes, Linux is by far the most successful of them all.
Originally posted by aht0 View Postbah.. 75% mobiles run Android, not Linux. Android is just using Linux kernel and highly modified one at that. Following that same chain of logic one could claim that Android is also BSD because equally important OS component (It's C library) has BSD origins.
Originally posted by aht0 View PostWhat world I am living in you ask?
Nice try though.Last edited by jacob; 24 October 2018, 10:31 PM.
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Originally posted by aht0 View Post
I could send that argument back to you: Nothing stops Linux enthusiasts here from generalizing based upon W3Techs "Comparison of the usage of Linux vs Windows for websites" and present it as a solid proof of overwhelming general Linux rule of ALL servers. When in fact it only reflects operating systems of web servers and nothing more, nothing less. And it has been done here in Phoronix countless times. Ignoring various kinds of servers and other devices sitting behind firewalls in Intranet, disconnected from Internet. The link I posted does count these normally "invisible" machines in.
As I see it, in the today's global economy, margins are extremely tight and that creates automatic similarity in choices made by companies across countries with similar free economies. With government structures being the sole exception because there other factors might be preferred - like efficiency being sacrificed to stronger security. Even there, similar choices might be made, compared to government structures of other countries.
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Originally posted by ssokolow View PostWell, for one thing, historically, there has been quite a bit of divergence in software and hardware buying decisions between North America, Europe, and the Asia-Pacific region for a mixture of economic and cultural/historical reasons.
It's unwise to generalize about the world from one country for that reason alone.
As I see it, in the today's global economy, margins are extremely tight and that creates automatic similarity in choices made by companies across countries with similar free economies. With government structures being the sole exception because there other factors might be preferred - like efficiency being sacrificed to stronger security. Even there, similar choices might be made, compared to government structures of other countries.
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Originally posted by aht0 View Post
Any particular reason to believe that MS software in Netherland has gotten some sort of special artificial advantages over open source software? If no, it should reflect your average country with free economy well enough to extrapolate.
It's unwise to generalize about the world from one country for that reason alone.
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Originally posted by Nille View Postkreijack lets think about this scenario. Raid 6, 5 Disks and one Disk failed. Parity on one disk is invalid. How does btrfs fix this problem now? How does it know which parity is invalid? Does the restore check it that the file was invalid with parity A and test again with parity B?
This is one of my concerns.
In your case you have two bad disk, and the math says that three disks are enough to rebuild the data.
The key is that BTRFS always checks the data against the checksum, so it is capable to verify if the (re-build) data is valid or not. If not it tries another set of disks, until a valid disks combination is found.
To be more explicit: if the parity is used and it is corrupted, the re-build data doesn't match the checksum; then two options are available:
a) if another set disks is available it is tried, and the loop restarted (i.e. the check against the checksum is re-performed)
b) otherwise BTRFS returns error and the data is not returned from BTRFS to userspace.
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Originally posted by ssokolow View PostNote that it says "The Netherlands". You never want to start an argument about the world by generalizing research on a single country.
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