[9fans] 9pccpuf freezes (after replica/pull)

[9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

Hi all,

I have done "replica/pull -v /dist/replica/network" a few days ago.
After that I made new kernel "9pccpuf" for my file/auth/cpu server.
Since then I can't boot (in Qemu) - my machine starts booting,
prints some lines of dots and then freezes...

(9pcf boots ok)

Any idea?


Antonin

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Steve Simon]

the kernel prints dots at several points during its boot cycle, can you cut and paste
the boot screen from qemu and post the text to the newsgroup?

try adding 
	flag x +
to the top of /rc/bin/cpurc, which may indicate how far the boot proceedure gets.

-Steve

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

[-- Attachment #1: Type: text/plain, Size: 501 bytes --]

The boot screen after adding flag x to /rc/bin/cpurc (1st line is:
#!/bin/rc -x )
doesn't change.

I attach screen dump from Qemu.


Antonin



On 10/15/07, Steve Simon <steve@quintile.net> wrote:
> the kernel prints dots at several points during its boot cycle, can you cut and paste
> the boot screen from qemu and post the text to the newsgroup?
>
> try adding
>         flag x +
> to the top of /rc/bin/cpurc, which may indicate how far the boot proceedure gets.
>
> -Steve
>

[-- Attachment #2: qemu.jpg --]
[-- Type: image/jpeg, Size: 68147 bytes --]

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

The boot screen after adding flag x to cpurc (1st line of cpurc is:
#!/bin/rc -x ) doesn't change.

I attach rewritten boot screen from Qemu:

==================================================
ata1 master: QEMU CD-ROM ATAPI-4 CD-Rom/DVD-Rom

Booting from Hard Disk...
MBR...PBS1...Plan 9 from Bell Labs
ELCR: 0A00
apm ax=f000 cx=f000 dx=f000 di=fff0 ebx=9e22 esi=-f0010
dev A0 port 1F0 config 0040 capabilities 0B00 mwdma 0007 udma 203F
 LLBA sectors 4194304
dev A0 port 170 config 85C0 capabilities 0300 mwdma 0007 udma 203F
using sdC0!9fat!plan9.ini
.
Plan 9 Startup Menu:
===============
     1. cpu
     2. terminal
Selection[default==1 (15s timeout)]: 1

found 9pccpuf
.997676............................................................................................
.......................................................................+1752328..................
.......................................................................................................
.......................................................................................................
....................................+426124=3176128
entry: 0xf0100020
_
==================================================



Antonin

Re: [9fans] 9pccpuf freezes (after replica/pull)

[ron minnich]

I think your kernel is no good.

ron

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

On 10/15/07, ron minnich <rminnich@gmail.com> wrote:
> I think your kernel is no good.
>

:-))) Yes, I know...

Where I am wrong?

     cd /sys/src/9/pc
     mk 'CONF=pc' install
     mk 'CONF=pcf' install
     mk 'CONF=pccpuf' install
     9fat:
     cd /386
     cp 9load 9pcf 9pccpuf /n/9fat
     # reboot


Antonin

Re: [9fans] 9pccpuf freezes (after replica/pull)

[ron minnich]

as Erik says, what's the size of 9pccpuf.

ron

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Steve Simon]

>      cd /sys/src/9/pc
>      mk 'CONF=pc' install
>      mk 'CONF=pcf' install
>      mk 'CONF=pccpuf' install
>      9fat:
>      cd /386
>      cp 9load 9pcf 9pccpuf /n/9fat
>      # reboot
>  

Just a guess,

add a mk clean between each mk of a kernel, the mkfile doesn't always clean up properly.

-Steve

Re: [9fans] 9pccpuf freezes (after replica/pull)

[erik quanstrom]

> >      cd /sys/src/9/pc
> >      mk 'CONF=pc' install
> >      mk 'CONF=pcf' install
> >      mk 'CONF=pccpuf' install
> >      9fat:
> >      cd /386
> >      cp 9load 9pcf 9pccpuf /n/9fat
> >      # reboot
> >  
> 
> Just a guess,
> 
> add a mk clean between each mk of a kernel, the mkfile doesn't always clean up properly.
> 
> -Steve

i've never had a problem with that.

- erik

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

I have just made new compilation of 9pccpuf with "mk clean" at the beginning.
No success... :-(

ls -l /n/9fat
alrw-rw-rw- M 22 bill trog  330276 Oct 13  2007 /n/9fat/9LOAD
--rw-rw-rw- M 22 bill trog 3179190 Jan  2 04:31 /n/9fat/9pccpuf
--rw-rw-rw- M 22 bill trog 3094042 Oct 13 2007 /n/9fat/9pcf
--rw-rw-rw- M 22 bill trog        275 Oct 13 2007 /n/9fat/plan9.ini

Antonin


On 10/15/07, Steve Simon <steve@quintile.net> wrote:
> >      cd /sys/src/9/pc
> >      mk 'CONF=pc' install
> >      mk 'CONF=pcf' install
> >      mk 'CONF=pccpuf' install
> >      9fat:
> >      cd /386
> >      cp 9load 9pcf 9pccpuf /n/9fat
> >      # reboot
> >
>
> Just a guess,
>
> add a mk clean between each mk of a kernel, the mkfile doesn't always clean up properly.
>
> -Steve
>

Re: [9fans] 9pccpuf freezes (after replica/pull)

[ron minnich]

On 10/15/07, Antonin Vecera <antonin.vecera@gmail.com> wrote:
> I have just made new compilation of 9pccpuf with "mk clean" at the beginning.
> No success... :-(
>
> ls -l /n/9fat
> alrw-rw-rw- M 22 bill trog  330276 Oct 13  2007 /n/9fat/9LOAD
> --rw-rw-rw- M 22 bill trog 3179190 Jan  2 04:31 /n/9fat/9pccpuf
> --rw-rw-rw- M 22 bill trog 3094042 Oct 13 2007 /n/9fat/9pcf
> --rw-rw-rw- M 22 bill trog        275 Oct 13 2007 /n/9fat/plan9.ini


It looks like Erik gets the prize. How did the kernels get to be so big?

ron

Re: [9fans] 9pccpuf freezes (after replica/pull)

[erik quanstrom]

> 
> It looks like Erik gets the prize. How did the kernels get to be so big?

venti? (ha!)

- erik

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

On 10/15/07, ron minnich <rminnich@gmail.com> wrote:
> On 10/15/07, Antonin Vecera <antonin.vecera@gmail.com> wrote:
> > I have just made new compilation of 9pccpuf with "mk clean" at the beginning.
> > No success... :-(
> >
> > ls -l /n/9fat
> > alrw-rw-rw- M 22 bill trog  330276 Oct 13  2007 /n/9fat/9LOAD
> > --rw-rw-rw- M 22 bill trog 3179190 Jan  2 04:31 /n/9fat/9pccpuf
> > --rw-rw-rw- M 22 bill trog 3094042 Oct 13 2007 /n/9fat/9pcf
> > --rw-rw-rw- M 22 bill trog        275 Oct 13 2007 /n/9fat/plan9.ini
>
>
> It looks like Erik gets the prize. How did the kernels get to be so big?

Is the usable size of kernel limited?
I use NOT gziped variation of kernel, just as is written in "Compiling
kernels (Plan 9 wiki)".
Am I wrong?

Antonin

Re: [9fans] 9pccpuf freezes (after replica/pull)

[erik quanstrom]

> Is the usable size of kernel limited?
> I use NOT gziped variation of kernel, just as is written in "Compiling
> kernels (Plan 9 wiki)".
> Am I wrong?
> 
> Antonin

yes.  l.s sets up a temporary page table with 4MB mapped.  the whole
uncompressed kernel plus any memory needed for the kernel page table
plus any data structures needed before the kpt is established must fit in
3MB.  remember the bottom MB is basically wasted.

- erik

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

On 10/15/07, erik quanstrom <quanstro@coraid.com> wrote:
> > Is the usable size of kernel limited?
> > I use NOT gziped variation of kernel, just as is written in "Compiling
> > kernels (Plan 9 wiki)".
> > Am I wrong?
> >
> > Antonin
>
> yes.  l.s sets up a temporary page table with 4MB mapped.  the whole
> uncompressed kernel plus any memory needed for the kernel page table
> plus any data structures needed before the kpt is established must fit in
> 3MB.  remember the bottom MB is basically wasted.
>
> - erik

Ok, I will try to make custom kernel with smaller size. But tomorrow.
Now I am sleepy, powering off my pc and going to bed.

Thank you very much!

Antonin

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Steve Simon]

Appologies to all for casting aspertions on the kernel's mkfile.

I did have problems in the past but they where probably all of my own making.

-Steve

Re: [9fans] 9pccpuf freezes (after replica/pull)

[erik quanstrom]

i wonder if the kernel is too big for the 4MB of temporary page
table mappings that l.s sets up.  the kernel itself decompresses
to ~3MB and starts at 1MB.  there's not much room for the
kernel pagetable..

(i had that problem just over the weekend, but with ken's kernel.
switching to 4MB pages solved the problem.)

- erik

> The boot screen after adding flag x to cpurc (1st line of cpurc is:
> #!/bin/rc -x ) doesn't change.
> 
> I attach rewritten boot screen from Qemu:
> 
> ==================================================
> ata1 master: QEMU CD-ROM ATAPI-4 CD-Rom/DVD-Rom
> 
> Booting from Hard Disk...
> MBR...PBS1...Plan 9 from Bell Labs
> ELCR: 0A00
> apm ax=f000 cx=f000 dx=f000 di=fff0 ebx=9e22 esi=-f0010
> dev A0 port 1F0 config 0040 capabilities 0B00 mwdma 0007 udma 203F
>  LLBA sectors 4194304
> dev A0 port 170 config 85C0 capabilities 0300 mwdma 0007 udma 203F
> using sdC0!9fat!plan9.ini
> .
> Plan 9 Startup Menu:
> ===============
>      1. cpu
>      2. terminal
> Selection[default==1 (15s timeout)]: 1
> 
> found 9pccpuf
> .997676............................................................................................
> .......................................................................+1752328..................
> .......................................................................................................
> .......................................................................................................
> ....................................+426124=3176128
> entry: 0xf0100020
> _
> ==================================================

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

On 10/15/07, erik quanstrom <quanstro@quanstro.net> wrote:
> i wonder if the kernel is too big for the 4MB of temporary page
> table mappings that l.s sets up.  the kernel itself decompresses
> to ~3MB and starts at 1MB.  there's not much room for the
> kernel pagetable..
>
> (i had that problem just over the weekend, but with ken's kernel.
> switching to 4MB pages solved the problem.)
>

How to do it?
I compile my kernels exactly according to
http://cm.bell-labs.com/wiki/plan9/Compiling_kernels

Antonin

Re: [9fans] 9pccpuf freezes (after replica/pull)

[erik quanstrom]

> On 10/15/07, erik quanstrom <quanstro@quanstro.net> wrote:
> > i wonder if the kernel is too big for the 4MB of temporary page
> > table mappings that l.s sets up.  the kernel itself decompresses
> > to ~3MB and starts at 1MB.  there's not much room for the
> > kernel pagetable..
> >
> > (i had that problem just over the weekend, but with ken's kernel.
> > switching to 4MB pages solved the problem.)
> >
> 
> How to do it?
> I compile my kernels exactly according to
> http://cm.bell-labs.com/wiki/plan9/Compiling_kernels
> 
> Antonin

you can make it significantly smaller by editing out stuff you're not
using.  typical targets are unused ethernet, video, disk drivers.
if you're not using usb or the bridge device, you can leave 'em out.
if you're not using kfs, you can get rid of that.  if you're not booting
from venti, you can get rid of that. in the ip section you can get
rid of gre, rudp and likely ipmux.

i've included the kernel conf i was using for testing booting cpuf
directly from aoe storage.  the kernel was "only" 2053582 bytes.
it would be about 1.5MB without the myricom driver.  (large
firmware.)

- erik


----

dev
	root
	cons
	arch
	pnp		pci
	env
	pipe
	proc
	mnt
	srv
	dup
	rtc
	ssl
	tls
	bridge		log
	sdp		thwack unthwack
	cap
	kprof
	fs

	ether		netif
	cec
	ip		arp chandial ip ipv6 ipaux iproute netlog nullmedium pktmedium ptclbsum386 inferno
	aoe		ip

	sd
	uart

link
	realmode
	acpi
	ether82563	pci
	ether82557	pci
	etherigbe	pci ethermii
	ethersink
	ethermedium
	loopbackmedium
	etherm10g	pci

misc
	archmp		mp apic

	uarti8250
	uartpci		pci
	uartaxp		pci

	sdaoe
	sdiahci		pci sdscsi
	sdata		pci sdscsi

ip
	il
	tcp
	udp
	ipifc
	icmp
	icmp6
	gre
	ipmux
	esp
	rudp

port
	int cpuserver = 1;

boot cpu
	local
	tcp
	il

bootdir
	bootaoe.out boot
	/386/bin/fossil/fossil fossil
	/386/bin/ip/ipconfig ipconfig
	/386/bin/auth/factotum

Re: [9fans] 9pccpuf freezes (after replica/pull)

[Antonin Vecera]

> you can make it significantly smaller by editing out stuff you're not
> using.  typical targets are unused ethernet, video, disk drivers.
> if you're not using usb or the bridge device, you can leave 'em out.
> if you're not using kfs, you can get rid of that.  if you're not booting
> from venti, you can get rid of that. in the ip section you can get
> rid of gre, rudp and likely ipmux.
>

Yes, I know I can make a custom kernel.
But I assume that pccpuf config file from the distribution CD will work.
Without any corrections. Custom kernel should be second step.

Antonin

Re: [9fans] 9pccpuf freezes (after replica/pull)

[erik quanstrom]

> Yes, I know I can make a custom kernel.
> But I assume that pccpuf config file from the distribution CD will work.
> Without any corrections. Custom kernel should be second step.

regardless of what should be, you have verified that it does not work.
we're officially onto step two.

- erik