openzfs | OpenZFS on Linux and FreeBSD, and, macOS This is where development for macOS happens

by openzfsonosx C Version: zfs-macOS-2.1.99 License: Non-SPDX

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kandi X-RAY | openzfs Summary

openzfs is a C library. openzfs has no bugs, it has no vulnerabilities and it has low support. However openzfs has a Non-SPDX License. You can download it from GitHub.

OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.

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Support

openzfs has a low active ecosystem.

It has 115 star(s) with 11 fork(s). There are 13 watchers for this library.

It had no major release in the last 12 months.

There are 21 open issues and 41 have been closed. On average issues are closed in 24 days. There are 6 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of openzfs is zfs-macOS-2.1.99

Quality

openzfs has no bugs reported.

Security

openzfs has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

openzfs has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

openzfs releases are available to install and integrate.

Installation instructions are available. Examples and code snippets are not available.

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openzfs Key Features

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openzfs Examples and Code Snippets

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Community Discussions

Trending Discussions on openzfs

Old ZFS recovery/upgrade strategy

Apple: Compile clang frame size with -O0 vs -O2 (kernel)

QUESTION

Old ZFS recovery/upgrade strategy

Asked 2021-Jan-13 at 09:51

The motherboard of a ZFS-based NAS died, and I'm now trying to access the data and move it, or revive the NAS. Debian and ZFS haven't been updated since 2015 or so, however. What I can glean from the log-files is:

ZFS 0.6.4
ZFS pool version 5000
ZFS filesystem 5
Debian Wheezy
Linux 3.2.0-4

So far so good. This Debian is rather old, though, and ZFS and some dependencies have to be compiled by hand to get it all going again - the apt repos have been largely purged of this old stuff, it seems. So, I'm wondering if it's safe to just spin up a modern Ubuntu, say, and simply create the ZFS pools again. The ZFS should get updated in any case, so it would be really neat if this just worked with Ubuntu 20, for example...

What came up after a bit of digging is that the ZFS pool version today is still 5000 according to Wikipedia. I can't find any information about what this "ZFS filesystem 5" refers to. I'm not sure at all what the right upgrade strategy is, or what the relevant documentation might be. Any pointers would be very welcome.

...

ANSWER

Answered 2021-Jan-13 at 09:51

Here's what I did:

Install Ubuntu 20.04, install zfsutils-linux.
Run zpool import, this will list all the pools the system can find.
Run zpool import -f (the -f is required because ZFS will otherwise complain that the "pool was previously in use from another system").

Source https://stackoverflow.com/questions/65689925

QUESTION

Apple: Compile clang frame size with -O0 vs -O2 (kernel)

Asked 2020-Jun-06 at 12:50

I have an existing project, which we compile DEBUG for developers (and -O0 so lldb makes sense). But I have one function in particular that balloons in size when -O0 is used:

...

ANSWER

Answered 2020-Jun-06 at 12:50

I'm not familiar with the code base, so I don't see any obvious variables that would be taking large amounts of stack space. However, I notice that the functions (including the always_inlined) are quite long. Typically, in debug builds, every variable and temporary expression result is assigned a unique space in the stack frame, regardless of scope. So even if 2 variables' lifetimes do not overlap (e.g. one is declared in the if block, and another in the else block) they will be allocated separate spaces in memory. So this can add up even if there are a lot of small short-lived variables and temporary values.

You are probably best off disabling always_inline attributes in all functions called by this function in debug builds, as this avoids pre-allocating memory for all possible branches of execution even if they are never taken, or if they are declared in a function that's not involved in the recursion.

Source https://stackoverflow.com/questions/62209723

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