Re: Switch from legacy ata(4) to CAM-based ATA
On Wed, Apr 20, 2011 at 03:35:38PM -0700, Doug Barton wrote: On 04/20/2011 15:18, Scott Long wrote: I agree with what Alexander is saying, but I'd like to take it a step further. We should all be using [...] mount-by-label +1 When I first saw this on linux my gut reaction was e, different. But now that I've worked with it a bit, I really like it. Doing this by default in 9.0 would be a really useful step forward, and would allow greater innovation down the road. Is there a handy tutorial somewhere for making this change in FreeBSD? Or is it even possible to do in a rational way? Judging from the thread that followed this: no. I agree with you that there should be and that mount-by-label is the way to go. I seem to recall some flakiness with mounting labelled gmirrors. Anyone know if that's been resolved? -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG signature.asc Description: Digital signature
Re: using cupsd instead of base lpr [was Re: [HEADS UP] Kernel modules don't work properly in FreeBSD 8.1-RC1 (solved)]
On Thu, Jun 24, 2010 at 09:40:00AM +0100, Tom Evans wrote: I also have this in make.conf: CUPS_OVERWRITE_BASE=yes WITHOUT_LPR=yes which print/cups-base uses to do make any lpr related binaries in /usr/bin non-executable, so they are skipped over and the cups specific ones in /usr/loca/bin are used instead. WITHOUT_LPR just stops LPR being built by buildworld. The clear winner, and one I was unaware of. Thanks, Tom. -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG pgp4QFrvNdcSN.pgp Description: PGP signature
Re: using cupsd instead of base lpr [was Re: [HEADS UP] Kernel modules don't work properly in FreeBSD 8.1-RC1 (solved)]
On Thu, Jun 24, 2010 at 08:29:57AM -0700, Ted Faber wrote: On Thu, Jun 24, 2010 at 09:40:00AM +0100, Tom Evans wrote: I also have this in make.conf: CUPS_OVERWRITE_BASE=yes WITHOUT_LPR=yes which print/cups-base uses to do make any lpr related binaries in /usr/bin non-executable, so they are skipped over and the cups specific ones in /usr/loca/bin are used instead. WITHOUT_LPR just stops LPR being built by buildworld. The clear winner, and one I was unaware of. Thanks, Tom. CUPS_OVERWRITE_BASE seems to do an odd thing. It doesn't install the cups binaries in /usr/bin, but it does do a chmod on everything it replaces in /usr/bin . For example praxis:~$ ls -l /usr/bin/lpr -r-sr-sr-x 1 root daemon 29876 Jun 24 09:16 /usr/bin/lpr # portupgrade -f cups-base-1.4.3 praxis:~$ ls -l /usr/bin/lpr -- 1 root daemon 29876 Jun 24 09:16 /usr/bin/lpr I'll still use it, but interesting behavior. -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG pgpMBBMf5Jte6.pgp Description: PGP signature
Re: [HEADS UP] Kernel modules don't work properly in FreeBSD 8.1-RC1
On Wed, Jun 23, 2010 at 10:10:59AM +0300, Andriy Gapon wrote: on 23/06/2010 10:02 Andriy Gapon said the following: I don't dispute that it is found broken in particular environments, I just think that the analysis could be incorrect. Which also brings the question - what arch(s) is affected? I tested on amd64. Right. I'm i386 and I have the problem. Good point! -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG pgpVLIqZ5Js9n.pgp Description: PGP signature
Re: [HEADS UP] Kernel modules don't work properly in FreeBSD 8.1-RC1
On Wed, Jun 23, 2010 at 11:03:45AM -0400, Ryan Stone wrote: I have to admit that I'm more than a little surprised that this problem does not affect modules that in src, but maybe that's because I don't know all that much about FreeBSD's build infrastructure. Are the src modules being linked with a linker script that is not being used for out-of-src modules? Are the people affected by this not using the base compiler to build ports?(I see that this affects PC-BSD as well, and I'd be a little surprised to learn that it wasn't using the base compiler). I had the problem on i386, base compiler. It also affects the sample module in /usr/share/examples/kld/cdev/ which also uses the base compiler, if you want a case w/o th eports infrastructure. -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG pgpk7CXCsISMP.pgp Description: PGP signature
Re: [HEADS UP] Kernel modules don't work properly in FreeBSD 8.1-RC1 (solved)
On Wed, Jun 23, 2010 at 08:45:31AM -0700, Ted Faber wrote: On Wed, Jun 23, 2010 at 11:03:45AM -0400, Ryan Stone wrote: I have to admit that I'm more than a little surprised that this problem does not affect modules that in src, but maybe that's because I don't know all that much about FreeBSD's build infrastructure. Are the src modules being linked with a linker script that is not being used for out-of-src modules? Are the people affected by this not using the base compiler to build ports?(I see that this affects PC-BSD as well, and I'd be a little surprised to learn that it wasn't using the base compiler). I had the problem on i386, base compiler. It also affects the sample module in /usr/share/examples/kld/cdev/ which also uses the base compiler, if you want a case w/o the ports infrastructure. Just so it gets into Google: Andriy Gapon went a few rounds of debugging with me and it turns out that the problem was that the binutils port had installed a loader in /usr/local/bin/ld that was incompatible with the module system. (/usr/local/bin/ preceeds /usr/bin in my path so I can use the lpr commands from cupsd, though it's evidently a bit of a dangerous idea.) Basically if the linker you're using to compile isn't /usr/bin/ld you may have problems building kernel modules. The easiest way to detect this is to get the -v output (version number) from the linker in use and compare it against /usr/bin/ld . I was able to do that by adding LDFLAGS += -v to the Makefile in question. Thanks Andriy! -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG pgpXJGFp1X6q8.pgp Description: PGP signature
Re: building world with debugging symbols [broken?]
On Tue, Jun 22, 2010 at 04:39:17PM -0400, Ryan Stone wrote: I saw similar behaviour a couple of years ago when I switched from using gcc 4.0.2 to gcc 4.3.0 to compile some out-of-tree KLD modules. The problem ended up being a change in the linker script used by GNU ld for linking kernel modules. It used to always put some magic symbols used by the linker to implement things like sysinits into the module. It was changed to only provide those symbols, which apparently means that the linker would discard those symbols if nothing referenced them(and nothing did reference them). I had to work around it by adding the following to my link line: -u __start_set_sysinit_set -u __start_set_sysuninit_set \ -u __start_set_sysctl_set -u __start_set_modmetadata_set \ -u __stop_set_sysinit_set -u __stop_set_sysuninit_set \ -u __stop_set_sysctl_set -u __stop_set_modmetadata_set HPS: I added those lines to the LDFLAGS in Makefile.kmod in the cuse4bsd port made the module and the result loads and creates the /dev/cuse file. Here's a diff relative to /usr/ports/multimedia/cuse4bsd-kmod/work/cuse4bsd-kmod-0.1.11 just so it's clear what I did. --- Makefile.kmod.orig 2010-02-11 03:28:02.0 -0800 +++ Makefile.kmod 2010-06-22 14:02:52.0 -0700 @@ -30,4 +30,10 @@ KMOD= cuse4bsd SRCS= cuse4bsd_kmod.c device_if.h bus_if.h vnode_if.h +LDFLAGS += -u __start_set_sysinit_set -u __start_set_sysuninit_set \ + -u __start_set_sysctl_set -u __start_set_modmetadata_set \ + -u __stop_set_sysinit_set -u __stop_set_sysuninit_set \ + -u __stop_set_sysctl_set -u __stop_set_modmetadata_set + + .include bsd.kmod.mk Running nm -o on the two modules, the difference seems to be that the -u results in some additional absolute symbols being defined: Bad module: $ nm -o /boot/modules/cuse4bsd.ko| grep sys /boot/modules/cuse4bsd.ko:275c r __set_sysinit_set_sym_cuse_kern_init_sys_init /boot/modules/cuse4bsd.ko:2758 r __set_sysuninit_set_sym_cuse_kern_uninit_sys_uninit /boot/modules/cuse4bsd.ko:3194 d cuse_kern_init_sys_init /boot/modules/cuse4bsd.ko:3184 d cuse_kern_uninit_sys_uninit Good module: $ nm -o ./cuse4bsd.ko | grep sys ./cuse4bsd.ko:28cc r __set_sysinit_set_sym_cuse_kern_init_sys_init ./cuse4bsd.ko:28c8 r __set_sysuninit_set_sym_cuse_kern_uninit_sys_uninit ./cuse4bsd.ko: U __start_set_sysctl_set ./cuse4bsd.ko:28cc A __start_set_sysinit_set ./cuse4bsd.ko:28c8 A __start_set_sysuninit_set ./cuse4bsd.ko: U __stop_set_sysctl_set ./cuse4bsd.ko:28d0 A __stop_set_sysinit_set ./cuse4bsd.ko:28cc A __stop_set_sysuninit_set ./cuse4bsd.ko:3194 d cuse_kern_init_sys_init ./cuse4bsd.ko:3184 d cuse_kern_uninit_sys_uninit -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG pgpQWyNSjmQCd.pgp Description: PGP signature
Re: [HEADS UP] Kernel modules don't work properly in FreeBSD 8.1-RC1
On Wed, Jun 23, 2010 at 02:38:06AM +0200, Hans Petter Selasky wrote: It appears many kmods are broken because the linker is stripping away static data declared with the section attribute in FreeBSD 8.1-RC1. cite I added those lines to the LDFLAGS in Makefile.kmod in the cuse4bsd port made the module and the result loads and creates the /dev/cuse file. Hi. I'm the fellow in Hans's cite.../cite. If someone's looking into this, it's worth mentioning that the sample cdev kmodule in /usr/share/examples/kld/cdev/ also exhibits the behavior. On my 8.1-PRERELEASE system that module does not create the /dev/cedv device, but if you add the line LDFLAGS += -u __start_set_sysinit_set -u __start_set_sysuninit_set \ -u __start_set_sysctl_set -u __start_set_modmetadata_set \ -u __stop_set_sysinit_set -u __stop_set_sysuninit_set \ -u __stop_set_sysctl_set -u __stop_set_modmetadata_set right before the .include bsd.kmod.mk in /usr/share/examples/kld/cdev/module/Makefile and remake everything, the module creates the /dev/cdev file when it's loaded. That magical line was suggested by Ryan Stone in another thread: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=120718+0+current/freebsd-hackers Happy hunting, and I'm happy to test patches or provide more information. -- Ted Faber http://www.isi.edu/~faber PGP: http://www.isi.edu/~faber/pubkeys.asc Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG pgploXUNQKXc1.pgp Description: PGP signature
