Re: [reiserfs-dev] Re: [ANNOUNCE] reiser4 snaphots
Todd Lyons writes: > Oleg O. Ossovitskii wanted us to know: > > >BTW: is anywhere diff to apply Reiser4 to plain 2.5.x (not bk tree) or I have to >made this > >manually (by hands)? > > It applied for me to the 2.5.45 tree with only one reject, mm/swap.c. > It wants to add a #include, but what's there is not quite like what the > patch expects. You'll actually have to add two lines, not just one. > > Still compiling. In the reiser4 code right nowwell, it built and > linked. That's a good sign. > > Here are the .config settings that I used: > CONFIG_REISER4_FS=m > CONFIG_REISER4_CHECK=y > CONFIG_REISER4_DEBUG=y > CONFIG_REISER4_CHECK_STACK=y > CONFIG_REISER4_DEBUG_MODIFY=y > CONFIG_REISER4_DEBUG_MEMCPY=y > CONFIG_REISER4_DEBUG_NODE=y > CONFIG_REISER4_ZERO_NEW_NODE=y > CONFIG_REISER4_TRACE=y > CONFIG_REISER4_STATS=y > CONFIG_REISER4_DEBUG_OUTPUT=y > # CONFIG_REISER4_NOOPT is not set > > Curious if anybody feels that I should have chosen different values for > any of the options. Reasonable options for debugging. Will result in dead-slow reiser4 though. Once you stop being able to tolerate it slowness, disable CONFIG_REISER4_DEBUG_MODIFY and CONFIG_REISER4_CHECK_STACK. > -- > Blue skies...Todd > | Get a bigger hammer! | Normal? Normal is a setting on | > | http://www.mrball.net | my dryer. | > | http://faq.mrball.net | BayCon 2001 http://www.baycon.org | >Linux kernel 2.5.45 1 user, load average: 1.19, 0.88, 0.40 Nikita.
Re: [reiserfs-dev] Re: [ANNOUNCE] reiser4 snaphots
Nikita Danilov wanted us to know: > > Still compiling. In the reiser4 code right nowwell, it built and > > linked. That's a good sign. It compiled and installed, but it doesn't load: [root@trip ~]# modprobe reiser4 /lib/modules/2.5.45-3/kernel/fs/reiser4/reiser4.o: unresolved symbol page_states__per_cpu modprobe: insmod /lib/modules/2.5.45-3/kernel/fs/reiser4/reiser4.o failed modprobe: insmod reiser4 failed > > Curious if anybody feels that I should have chosen different values for > > any of the options. >Reasonable options for debugging. Will result in dead-slow reiser4 though. Ok, will remove the debugging options. In the meantime, gotta figure out why it's got that unresolved symbol. -- Blue skies... Todd http://www.mrball.net Public key: http://www.mrball.net/todd.asc Development is like evolution and there is no turning back. Linux kernel 2.5.45-3 1 user, load average: 0.00, 0.00, 0.00 msg06849/pgp0.pgp Description: PGP signature
Re: [reiserfs-dev] Re: [ANNOUNCE] reiser4 snaphots
Todd Lyons writes: > Nikita Danilov wanted us to know: > > > > Still compiling. In the reiser4 code right nowwell, it built and > > > linked. That's a good sign. > > It compiled and installed, but it doesn't load: > > [root@trip ~]# modprobe reiser4 > /lib/modules/2.5.45-3/kernel/fs/reiser4/reiser4.o: unresolved symbol > page_states__per_cpu > modprobe: insmod /lib/modules/2.5.45-3/kernel/fs/reiser4/reiser4.o failed > modprobe: insmod reiser4 failed > > > > Curious if anybody feels that I should have chosen different values for > > > any of the options. > >Reasonable options for debugging. Will result in dead-slow reiser4 though. > > Ok, will remove the debugging options. In the meantime, gotta figure > out why it's got that unresolved symbol. This is bug in the handling of per-cpu variables. Andrew Morton and Rusty Russell posted patches to fix it. Here is one: -- diff -urpN --exclude TAGS -X /home/rusty/devel/kernel/kernel-patches/current-dontdiff \ --minimal linux-2.5.45/include/asm-generic/percpu.h \ working-2.5.45-tmp/include/asm-generic/percpu.h --- linux-2.5.45/include/asm-generic/percpu.h 2002-10-31 12:36:56.0 +1100 +++ working-2.5.45-tmp/include/asm-generic/percpu.h 2002-11-02 09:20:06.0 \ +1100 @@ -35,4 +35,10 @@ extern unsigned long __per_cpu_offset[NR #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(var##__per_cpu) #define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(var##__per_cpu) +/* Genksyms can't follow the percpu declaration. Give it a fake one. */ +#ifdef __GENKSYMS__ +#undef DEFINE_PER_CPU +#define DEFINE_PER_CPU(type, name) type name##__per_cpu +#endif /*__GENKSYMS__*/ + #endif /* _ASM_GENERIC_PERCPU_H_ */ -- Please let me know whether this helps. Alternatively, you can compile reiser4 as built-in (not module), or disable module versioning. Nikita.
Re: [reiserfs-dev] Re: [ANNOUNCE] reiser4 snaphots
Nikita Danilov wanted us to know: > > [root@trip ~]# modprobe reiser4 > > /lib/modules/2.5.45-3/kernel/fs/reiser4/reiser4.o: unresolved symbol > > page_states__per_cpu >This is bug in the handling of per-cpu variables. Andrew Morton and >Rusty Russell posted patches to fix it. Here is one: >Please let me know whether this helps. Yes, it fixed it. Maybe my understanding is a little off, but I thought that I could just rebuild the modules and install them and run depmod and the new module symbols would be in effect. But that didn't work (same error). So then I tried also a make bzImage and make install (which updates the System.map, something that didn't get done with make modules_install). It still would not load (same error). Finally, I rebooted loading the new kernel and that fixed it. No comments needed, unless they are "what you did should have worked." >Alternatively, you can compile reiser4 as built-in (not module), or Much prefer modules for everything. Kinda spoiled by the ability to change configurations on the fly. >disable module versioning. Something to think about... -- Blue skies... Todd | Get a bigger hammer! | ...file transfer by email is evil.| | http://www.mrball.net | NANOG | | http://faq.mrball.net || Linux kernel 2.5.45-3 load average: 0.24, 0.21, 0.09 msg06851/pgp0.pgp Description: PGP signature
Re: [reiserfs-dev] Re: [ANNOUNCE] reiser4 snaphots
On Fri, 08 Nov 2002 11:49:48 PST, Todd Lyons said: > Maybe my understanding is a little off, but I thought that I could just > rebuild the modules and install them and run depmod and the new module > symbols would be in effect. But that didn't work (same error). > > So then I tried also a make bzImage and make install (which updates the > System.map, something that didn't get done with make modules_install). > It still would not load (same error). > > Finally, I rebooted loading the new kernel and that fixed it. No > comments needed, unless they are "what you did should have worked." I've seen similar issues when the /boot/System.map file doesn't match the kernel in use (this is particularly an issue for 'depmod' - the standard 'make modules_install' target passes a -F flag to depmod to use the just-created System.map file. -- Valdis Kletnieks Computer Systems Senior Engineer Virginia Tech msg06852/pgp0.pgp Description: PGP signature
Re: [reiserfs-dev] Re: [ANNOUNCE] reiser4 snaphots
[EMAIL PROTECTED] wanted us to know: >> Todd Lyons wrote: >> Maybe my understanding is a little off, but I thought that I could >> just rebuild the modules and install them and run depmod and the new >> module symbols would be in effect. But that didn't work (same >> error). >> So then I tried also a make bzImage and make install (which updates the >> System.map, something that didn't get done with make modules_install). >> It still would not load (same error). >> Finally, I rebooted loading the new kernel and that fixed it. No >> comments needed, unless they are "what you did should have worked." >I've seen similar issues when the /boot/System.map file doesn't match >the kernel in use (this is particularly an issue for 'depmod' - the >standard 'make modules_install' target passes a -F flag to depmod to >use the just-created System.map file. That I get. You're saying that my make install step which updated the System.map in /boot was nullfied because it didn't exactly match the running kernel version. And you're also saying that -F makes it ignore what /proc/ksyms has. But then that leads to the next problem. That System.map doesn't match the /proc/ksyms, so I'm still left with a reboot as my only option. Thinking out loud. But I didn't change the way that the kernel was compiled. Reiser4 is _still_ a module. What am I missing? Blue skies... Todd P.S. Valdis, I think this sig originally came from somebody's NANOG post. :) -- A: No Q: Should I quote at the end of the message? Linux kernel 2.5.45-3 load average: 0.00, 0.00, 0.00 msg06853/pgp0.pgp Description: PGP signature
Re: [reiserfs-dev] Re: [ANNOUNCE] reiser4 snaphots
Am Freitag, 8. November 2002 21:39 schrieb Todd Lyons: > [EMAIL PROTECTED] wanted us to know: > >> Todd Lyons wrote: > >> Maybe my understanding is a little off, but I thought that I could > >> just rebuild the modules and install them and run depmod and the new > >> module symbols would be in effect. But that didn't work (same > >> error). > >> So then I tried also a make bzImage and make install (which updates the > >> System.map, something that didn't get done with make modules_install). > >> It still would not load (same error). > >> Finally, I rebooted loading the new kernel and that fixed it. No > >> comments needed, unless they are "what you did should have worked." > > > >I've seen similar issues when the /boot/System.map file doesn't match > >the kernel in use (this is particularly an issue for 'depmod' - the > >standard 'make modules_install' target passes a -F flag to depmod to > >use the just-created System.map file. > > That I get. You're saying that my make install step which updated the > System.map in /boot was nullfied because it didn't exactly match the > running kernel version. And you're also saying that -F makes it ignore > what /proc/ksyms has. > > But then that leads to the next problem. That System.map doesn't match > the /proc/ksyms, so I'm still left with a reboot as my only option. That's normal for all kernel developers. If you build a new kernel with new symbols some stuff couldn't match until you have rebooted. > Thinking out loud. But I didn't change the way that the kernel was > compiled. Reiser4 is _still_ a module. What am I missing? Are you sure? -Dieter
