linux_base‐c6

Seems I for­got to announce that the linux_base‐c6 is in the Ports Col­lec­tion now. Well, it is not a replace­ment for the cur­rent default lin­ux base, the lin­ux­u­la­tor infra­struc­ture ports are miss­ing and we need to check if the ker­nel sup­ports enough of 2.6.18 that noth­ing breaks.

TODO:

To my knowl­edge, nobody is work­ing on any­thing of this. Any­one is wel­come to have a look and pro­vide patch­es.

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Lin­ux­u­la­tor progress

This week­end I made some progress in the lin­ux­u­la­tor:

  • I MFCed the report­ing of some linux‐syscalls to 9‐stable and 8‐stable.
  • I updat­ed my lin­ux­u­la­tor-dtrace patch to a recent -cur­rent. I already com­piled it on i386 and arundel@ has it com­piled on amd64. I count­ed more than 500 new DTrace probes. Now that DTrace res­cans for SDT probes when a ker­nel mod­ule is loaded, there is no ker­nel pan­ic any­more when the lin­ux mod­ule is loaded after the DTrace mod­ules and you want to use DTrace. I try to com­mit this at a morn­ing of a day where I can fix things dur­ing the day in case some prob­lems show up which I did not notice dur­ing my test­ing.
  • I cre­at­ed a PR for portmgr@ to repocopy a new linux_base port.
  • I set the expi­ra­tion date of linux_base‐fc4 (only used by 7.x and upstream way past its EoL) and all depen­dent ports. It is set to the EoL of the last 7.x release, which can not use a lat­er linux_base port. I also added a com­ment which explains that the date is the EoL of the last 7.x release.
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New Cen­tOS linux_base for test­ing soon­ish

It seems my HOWTO cre­ate a new linux_base port was not too bad. There is now a PR for a Cen­tOS 6 based linux_base port. I had a quick look at it and it seems that it is near­ly usable to include into the Ports Col­lec­tion (the SRPMs need to be added, but that can be done with­in some min­utes).

When FreeB­SD 8.3 is released and the Ports Col­lec­tion open for sweep­ing com­mits again, I will ask port­m­gr to do a repo‐copy for the new port and com­mit it. This is just the linux_base port, not the com­plete infra­struc­ture which is need­ed to com­plete­ly replace the cur­rent default lin­ux­u­la­tor user­land. This is just a start. The process of switch­ing to a more recent linux_base port is a long process, and in this case depends upon enough sup­port in the sup­port­ed FreeB­SD releas­es.

Atten­tion: Any­one installing the port from the PR should be aware that using it is a high­ly exper­i­men­tal task. You need to change the lin­ux­u­la­tor to imper­son­ate him­self as a lin­ux 2.6.18 ker­nel (described in the pkg‐message of the port), and the code in FreeB­SD is far from sup­port­ing this. Any­one who wants to try it is wel­come, but you have to run FreeBSD‐current as of at least the last week­end, and watch out for ker­nel mes­sages about unsup­port­ed syscalls. Reports to emulation@FreeBSD.org please, not here on the web­page.

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VDR ports docs

After a quick dis­cus­sion with nox@ I made a copy&paste of his “VDR is com­mit­ted now”-mail into the FreeB­SD wiki. I also re‐styled some small parts of it to fit bet­ter into the wiki. It is not per­fect, but already usable. Now inter­est­ed peo­ple can go and improve the docs there.

Thanks to Juer­gen for all his work in this area!

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Non‐default lin­ux base ports dep­re­cat­ed

Yes­ter­day I dep­re­cat­ed the non‐default Fedo­ra based Lin­ux base ports. This means fc6, f7, f8 and f9 will van­ish soon (I decid­ed for one month of expiry time). This is because all of them are End of Life upstream since a long time (= no secu­ri­ty updates).

The fc4 and f10 ones are still avail­able – even if they are End of Life too – because FreeB­SD 7.x can not use some­thing new­er than the fc4 one, and we have not test­ed yet a more recent Lin­ux dis­tri­b­u­tion.

Prob­a­bly the most easy way to update the Lin­ux base ports to some­thing new­er is to stay with Fedo­ra (we have a lot of ports‐infrastructure for it already). Unfor­tu­nate­ly it is not known if some­thing new­er works with­out prob­lems (miss­ing epoll/inotify sup­port could be a road­block here in case it is exten­sive­ly used in a more recent ver­sion).

I want to get some time to have a look if a more recent Fedo­ra ver­sion is suit­able for the use as a Lin­ux base in FreeB­SD 8.x+, but I do not have an esti­mate when I can start and how long it may take. In case some­one already test­ed a more recent Fedo­ra ver­sion feel free to share your expe­ri­ence.

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