freeze when mounting fs

freeze when mounting fs

[Konstantin Kletschke]

I have also 2.6.10-rc2 kernel here with nodemgmnt.c from actual cvs. I
have a weird constellation here where adding file to /home makes mount
freeze when attepting to mount, regardeless if extra partition or root
partition. What the fuck can that be?

I go it mounted ro once though:

root@scb9328 ~ # mount -t jffs2 -o,ro /dev/mtdblock4 /mnt
Inode #170 was a directory with children - removing those too...
root@scb9328 ~ # Jan  1 02:00:55 scb9328 kern.notice klogd: Inode #170
was a directory with children - removing those too...

I did

root@scb9328 ~ # echo 9 >/proc/sys/kernel/printk
root@scb9328 ~ # 
root@scb9328 ~ # klogd           
root@scb9328 ~ # syslogd
root@scb9328 ~ # tail -f /var/log/messages &

But got no info.

:-( !!!!

Konsti

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Re: freeze when mounting fs

[Artem B. Bityuckiy]

On Fri, 2005-02-18 at 16:42 +0100, Konstantin Kletschke wrote:
> But got no info.
Because you just mesages. You need to use synchronous output to capture
messages. 

-- 
Best Regards,
Artem B. Bityuckiy,
St.-Petersburg, Russia.

Re: freeze when mounting fs

[Konstantin Kletschke]

Am 2005-02-18 18:48 +0300 schrieb Artem B. Bityuckiy:
> On Fri, 2005-02-18 at 16:42 +0100, Konstantin Kletschke wrote:
> > But got no info.
> Because you just mesages. You need to use synchronous output to capture
> messages. 

You mean synchronous logging of syslogd/klogd?
Busybox's can't.
It seems adding some scripts to /home into the rootfs breaks things.
I removed /home before mkfs.jffs2, left the other stuff like it was,
voily, mounts, runs, works with no error.

Konsti

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Re: freeze when mounting fs

[Thomas Gleixner]

On Fri, 2005-02-18 at 17:01 +0100, Konstantin Kletschke wrote:
> Am 2005-02-18 18:48 +0300 schrieb Artem B. Bityuckiy:
> > On Fri, 2005-02-18 at 16:42 +0100, Konstantin Kletschke wrote:
> > > But got no info.
> > Because you just mesages. You need to use synchronous output to capture
> > messages. 
> 
> You mean synchronous logging of syslogd/klogd?

No, serial log without syslogd/klogd 

> Busybox's can't.
> It seems adding some scripts to /home into the rootfs breaks things.
> I removed /home before mkfs.jffs2, left the other stuff like it was,
> voily, mounts, runs, works with no error.

Hmm, can you provide such a broken image and the serial log from mount ?

tglx

Re: freeze when mounting fs

[Artem B. Bityuckiy]

On Fri, 2005-02-18 at 17:01 +0100, Konstantin Kletschke wrote:
> You mean synchronous logging of syslogd/klogd?
> Busybox's can't.
> It seems adding some scripts to /home into the rootfs breaks things.
> I removed /home before mkfs.jffs2, left the other stuff like it was,
> voily, mounts, runs, works with no error.
> 
> Konsti

I mean via serial line. It is synchronous. In your case it is not,
meaning that first output goes to the circular buffer, then user space
daemons fetch it etc etc. Your system may die before the messages have
been conveyed to syslogd.  

Re: freeze when mounting fs

[Konstantin Kletschke]

Am 2005-02-18 16:42 +0100 schrieb Konstantin Kletschke:

I did

CONFIG_JFFS2_FS=y
CONFIG_JFFS2_FS_DEBUG=2
# CONFIG_JFFS2_FS_NAND is not set
CONFIG_JFFS2_COMPRESSION_OPTIONS=y
CONFIG_JFFS2_ZLIB=y
CONFIG_JFFS2_RTIME=y
CONFIG_JFFS2_RUBIN=y
# CONFIG_JFFS2_CMODE_NONE is not set
CONFIG_JFFS2_CMODE_PRIORITY=y

And when mounting functional rootfs it speaks a lot, but:

root@scb9328 ~ # mount -t jffs2 /dev/mtdblock4 /mnt

[ ... silence ... ]

Rootfs is at http://ludenkalle.de/mtd/52

created with 

mkfs.jffs2 -q --eraseblock=128KiB -o /tftpboot/52 -D
/home/konsti/svn/ptxdist-0.5.2-trunk/src/device_table.txt
--root=/home/konsti/svn/ptxdist-0.5.2-trunk/root

Konsti

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Re: freeze when mounting fs

[Thomas Gleixner]

On Fri, 2005-02-18 at 16:48 +0100, Konstantin Kletschke wrote:

> CONFIG_JFFS2_FS_DEBUG=2

Please use level 1

> And when mounting functional rootfs it speaks a lot, but:

What happens when you mount the non-functional one ? Can you please
provide logs via serial console. klogd does not work for logging of that
stuff.

> Rootfs is at http://ludenkalle.de/mtd/52

The image is clean. There is no problem to see.

It would be interesting to have a binary image after you programmed it
to FLASH. cat /dev/mtdX >flash.img

tglx

Re: freeze when mounting fs

[Konstantin Kletschke]

Am 2005-02-18 17:09 +0100 schrieb Thomas Gleixner:
> On Fri, 2005-02-18 at 16:48 +0100, Konstantin Kletschke wrote:
> 
> > CONFIG_JFFS2_FS_DEBUG=2
> 
> Please use level 1
> 
> > And when mounting functional rootfs it speaks a lot, but:
> 
> What happens when you mount the non-functional one ? Can you please

Nothing.

> provide logs via serial console. klogd does not work for logging of that
> stuff.

Even with level 3 _nothing_ happens.

> > Rootfs is at http://ludenkalle.de/mtd/52
> 
> The image is clean. There is no problem to see.
> 
> It would be interesting to have a binary image after you programmed it
> to FLASH. cat /dev/mtdX >flash.img

I will try what I can do or reproduce it later, I am sure my device
table triggered a bug or some sort of that:

I removed 3 lines mungling up some access permissions of subdirectories
under /home and now the image gets mounted.
I am fighting with svn ATM to get the actual change...

Konsti

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Re: freeze when mounting fs

[Konstantin Kletschke]

I wan' to inform you I can send/commit debug output next wee, not now,
because we leave to the fair embedded world in Nurnberg now and all
other tasks sleep for a week now, sorry guys!

Regards, Konsti

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