Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-09-14 Thread Mel Flynn
On Saturday 22 August 2009 02:40:53 Scott Schappell wrote:
> On Aug 21, 2009, at 17:32:13, Mel Flynn wrote:
> > On Friday 21 August 2009 07:34:11 Scott Schappell wrote:
> >> Looking at info.0 I see:
> >>
> >>
> >> Dump header from device /dev/ad0s1b
> >>   Architecture: i386
> >>   Architecture Version: 2
> >>   Dump Length: 155131904B (147 MB)
> >>   Blocksize: 512
> >>   Dumptime: Fri Aug 21 08:27:45 2009
> >>   Hostname: arthur.silvertree.org
> >>   Magic: FreeBSD Kernel Dump
> >>   Version String: FreeBSD 7.2-RELEASE-p3 #1: Fri Aug 14 13:27:47 PDT
> >> 2009
> >> r...@arthur.silvertree.org:/usr/obj/usr/src/sys/ARTHUR
> >>   Panic String: ffs_sync: rofs mod
> >>   Dump Parity: 2778312054
> >>   Bounds: 0
> >>   Dump Status: good
> >>
> >> This is interesting:
> >>
> >> "Panic String: ffs_sync: rofs mod"
> >>
> >> It looks I'm guessing this is saying "read only file system
> >> modified".  So it looks like the problem is with mount?
> >>
> >> If there's anything you want me to pull from the vmcore.0 let me
> >> know.
> >>
> >> Again, this happens with the drive mounted RO from fstab. Unmounted
> >> then mount -o rw /backup.
> >>
> >> Something is amiss, and first blush doesn't seem to be hardware
> >> related.
> >
> > There should be a backtrace in info.0 already. That part contains more
> > relevant information.
> 
> Nope, that's all info.0 contains.

Follow up. Temp fix available here:
http://www.freebsd.org/cgi/getmsg.cgi?fetch=193338+0+current/freebsd-current
-- 
Mel
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-21 Thread Mel Flynn
On Friday 21 August 2009 07:34:11 Scott Schappell wrote:
> Looking at info.0 I see:
>
>
> Dump header from device /dev/ad0s1b
>Architecture: i386
>Architecture Version: 2
>Dump Length: 155131904B (147 MB)
>Blocksize: 512
>Dumptime: Fri Aug 21 08:27:45 2009
>Hostname: arthur.silvertree.org
>Magic: FreeBSD Kernel Dump
>Version String: FreeBSD 7.2-RELEASE-p3 #1: Fri Aug 14 13:27:47 PDT
> 2009
>  r...@arthur.silvertree.org:/usr/obj/usr/src/sys/ARTHUR
>Panic String: ffs_sync: rofs mod
>Dump Parity: 2778312054
>Bounds: 0
>Dump Status: good
>
> This is interesting:
>
> "Panic String: ffs_sync: rofs mod"
>
> It looks I'm guessing this is saying "read only file system
> modified".  So it looks like the problem is with mount?
>
> If there's anything you want me to pull from the vmcore.0 let me know.
>
> Again, this happens with the drive mounted RO from fstab. Unmounted
> then mount -o rw /backup.
>
> Something is amiss, and first blush doesn't seem to be hardware related.

There should be a backtrace in info.0 already. That part contains more 
relevant information.
-- 
Mel
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-21 Thread Scott Schappell

Looking at info.0 I see:


Dump header from device /dev/ad0s1b
  Architecture: i386
  Architecture Version: 2
  Dump Length: 155131904B (147 MB)
  Blocksize: 512
  Dumptime: Fri Aug 21 08:27:45 2009
  Hostname: arthur.silvertree.org
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 7.2-RELEASE-p3 #1: Fri Aug 14 13:27:47 PDT  
2009

r...@arthur.silvertree.org:/usr/obj/usr/src/sys/ARTHUR
  Panic String: ffs_sync: rofs mod
  Dump Parity: 2778312054
  Bounds: 0
  Dump Status: good

This is interesting:

"Panic String: ffs_sync: rofs mod"

It looks I'm guessing this is saying "read only file system  
modified".  So it looks like the problem is with mount?


If there's anything you want me to pull from the vmcore.0 let me know.

Again, this happens with the drive mounted RO from fstab. Unmounted  
then mount -o rw /backup.


Something is amiss, and first blush doesn't seem to be hardware related.

Scott
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-21 Thread Norbert Papke
On August 20, 2009, Scott Schappell wrote:
> I cannot get the system to generate a dump, even though dumpon verified
> it's set to the swap drive but /var/crash stays empty. I have
> dumpdev=AUTO in rc.conf and dumpdir=/var/crash as well.

If you don't have it already, you may also need 

ddb_enable="YES"
savecore_enable="YES"

Cheers,

-- Norbert Papke.
   npa...@acm.org


http://saveournet.ca
Protecting your Internet's level playing field
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-20 Thread Mel Flynn
On Thursday 20 August 2009 18:40:27 Scott Schappell wrote:
> On 8/20/2009 7:36 PM, Scott Schappell wrote:
> > On 8/20/2009 4:31 PM, Mel Flynn wrote:
> >> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/ker
> >>neldebug.html
> >
> > OK, /backup was mounted read only, I did the following
> >
> > umount /backup
> > mount -o rw /backup
> > [r...@arthur ~]# dd if=/dev/zero of=/backup/testfile bs=1024
> > dd: /backup/testfile: end of device
> > 21122+0 records in
> > 21121+0 records out
> > 21627904 bytes transferred in 2.215991 secs (9759924 bytes/sec)
> > [r...@arthur ~]#
>
> As of now, the dd command above has not crashed and it's past 3 GiB,
> using the mount -u -w syntax versus unmount, mount -o rw.
>
> This is puzzling.

I agree. These errors make no sense to me, which leads me to drive cable or 
physical memory problems, perhaps filesystem corruption. Since you have plenty 
of space on /home, is it possible for you to move whatever's on /backup to 
/home, then newfs /backup? Of course you could try fsck -y /backup in single 
user, but with these weird errors, I trust the filesystem on that disk as far 
as I can throw it.
-- 
Mel
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-20 Thread Scott Schappell

On 8/20/2009 7:36 PM, Scott Schappell wrote:

On 8/20/2009 4:31 PM, Mel Flynn wrote:


http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html



OK, /backup was mounted read only, I did the following

umount /backup
mount -o rw /backup
[r...@arthur ~]# dd if=/dev/zero of=/backup/testfile bs=1024
dd: /backup/testfile: end of device
21122+0 records in
21121+0 records out
21627904 bytes transferred in 2.215991 secs (9759924 bytes/sec)
[r...@arthur ~]#



As of now, the dd command above has not crashed and it's past 3 GiB, 
using the mount -u -w syntax versus unmount, mount -o rw.


This is puzzling.
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-20 Thread Scott Schappell

On 8/20/2009 4:31 PM, Mel Flynn wrote:


http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html


OK, /backup was mounted read only, I did the following

umount /backup
mount -o rw /backup
[r...@arthur ~]# dd if=/dev/zero of=/backup/testfile bs=1024
dd: /backup/testfile: end of device
21122+0 records in
21121+0 records out
21627904 bytes transferred in 2.215991 secs (9759924 bytes/sec)
[r...@arthur ~]#


You can see by that snippet it barfed at 21627094 bytes (21 megabytes, 
ish). /backup has 100s of GiB free.


Filesystem SizeUsed   Avail Capacity  Mounted on
/dev/ad0s1a9.7G453M8.5G 5%/
devfs  1.0K1.0K  0B   100%/dev
/dev/ad0s1d 15G481M 13G 4%/var
/dev/ad0s1e 15G3.1G 10G23%/usr
/dev/ad0s1f 15G1.4G 12G10%/usr/local
/dev/ad0s1g216G3.5G195G 2%/home
/dev/ad2s1d226G 32G176G15%/backup

I cannot get the system to generate a dump, even though dumpon verified 
it's set to the swap drive but /var/crash stays empty. I have 
dumpdev=AUTO in rc.conf and dumpdir=/var/crash as well.


Could this have anything to do with how I added the drive? I followed 
the handbook instructions but maybe I messed it up.

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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-20 Thread Mel Flynn
On Thursday 20 August 2009 15:00:48 Scott Schappell wrote:
> On Aug 20, 2009, at 15:42:05, Mel Flynn wrote:
> > I don't. It's perfectly valid to mount a device multiple times and
> > on the same
> > node even. Certainly unmounting then remounting should not panic the
> > system.
> >
> > If you keep getting this panic, please try and obtain a crash dump,
> > though I
> > suspect this to be driver or hardware related as I can't imagine
> > such a bug
> > has slipped into vfs/ufs.
> > --
> > Mel
>
> Since using the mount -r syntax, it hasn't crashed once.  How does one
> obtain a crash dump? I'll be happy to force the system to hork and
> send a crash log.

http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html
-- 
Mel
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-20 Thread Mel Flynn
On Tuesday 18 August 2009 12:11:10 Tim Judd wrote:
> On 8/18/09, Scott Schappell  wrote:
> > I have a drive (/dev/ad2s1d) mounted to /backup that I want to be read
> > only until the backup scripts run and then it will be read/write.  If
> > I set /etc/fstab to:
> >
> > /dev/ad2s1d /backup ufs ro
> > 0   0
>
> On my CF-based devices (firewalls.. nagios boxes, etc), I run:
>
> mount -uw /
> to update the mount (not mount again) the filesystem.  If you're
> trying to mount again, I could understand why the box panics.

I don't. It's perfectly valid to mount a device multiple times and on the same 
node even. Certainly unmounting then remounting should not panic the system.

If you keep getting this panic, please try and obtain a crash dump, though I 
suspect this to be driver or hardware related as I can't imagine such a bug 
has slipped into vfs/ufs.
-- 
Mel
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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-18 Thread Scott Schappell

On Aug 18, 2009, at 13:11:10, Tim Judd wrote:


On my CF-based devices (firewalls.. nagios boxes, etc), I run:

mount -uw /
to update the mount (not mount again) the filesystem.  If you're
trying to mount again, I could understand why the box panics.


Try in your script:
 mount -u -w /backups
or shorter by a little:
 mount -uw /backups

do your stuff, then go back to read-only:
 mount -ur /backups


HTH
We have a winner. I am sheepish in admitting I didn't read the man  
page well enough for mount.


Thanks for the answer!

Scott

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Re: Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-18 Thread Tim Judd
On 8/18/09, Scott Schappell  wrote:
> I have a drive (/dev/ad2s1d) mounted to /backup that I want to be read
> only until the backup scripts run and then it will be read/write.  If
> I set /etc/fstab to:
>
> /dev/ad2s1d /backup ufs ro
> 0   0

On my CF-based devices (firewalls.. nagios boxes, etc), I run:

mount -uw /
to update the mount (not mount again) the filesystem.  If you're
trying to mount again, I could understand why the box panics.


Try in your script:
  mount -u -w /backups
or shorter by a little:
  mount -uw /backups

do your stuff, then go back to read-only:
  mount -ur /backups


HTH

>
> to mount it read only most of the time then do:
>
> umount /backup
> mount -o rw /backup
>
> the system crashes, it just reboots about 10 seconds into writing
> data.  The system is perfectly stable with it mounted read/write.
>
> Also, dmesg.boot has completely disappeared from the system, and
> touch /var/log/dmesg.boot it does not get populated.
>
> # uname -a
> FreeBSD arthur.silvertree.org 7.2-RELEASE-p3 FreeBSD 7.2-RELEASE-p3
> #1: Fri Aug 14 13:27:47 PDT 2009 r...@arthur.silvertree.org:/usr/
> obj/usr/src/sys/ARTHUR  i386
>
> Any suggestions on the remounting drive and dmesg.boot?
>
> Thanks!
>
> Scott
>
> P.S. It's good to be off of FreeBSD 4.11 :)
>
>
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Remounting a drive as read/write crashes the system and no dmesg.boot

2009-08-18 Thread Scott Schappell
I have a drive (/dev/ad2s1d) mounted to /backup that I want to be read  
only until the backup scripts run and then it will be read/write.  If  
I set /etc/fstab to:


/dev/ad2s1d /backup ufs ro   
0   0


to mount it read only most of the time then do:

umount /backup
mount -o rw /backup

the system crashes, it just reboots about 10 seconds into writing  
data.  The system is perfectly stable with it mounted read/write.


Also, dmesg.boot has completely disappeared from the system, and  
touch /var/log/dmesg.boot it does not get populated.


# uname -a
FreeBSD arthur.silvertree.org 7.2-RELEASE-p3 FreeBSD 7.2-RELEASE-p3  
#1: Fri Aug 14 13:27:47 PDT 2009 r...@arthur.silvertree.org:/usr/ 
obj/usr/src/sys/ARTHUR  i386


Any suggestions on the remounting drive and dmesg.boot?

Thanks!

Scott

P.S. It's good to be off of FreeBSD 4.11 :)


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Re: remounting a drive

2007-06-22 Thread Tom Marchand
Are you running the command as root?

 -- Original message --
From: Steel City Phantom <[EMAIL PROTECTED]>
> 
>i tried that command as well, still got the operation not permitted
>error
>Nikos Vassiliadis wrote:
> 
> On Friday 22 June 2007 00:30, Steel City Phantom wrote:
>   
> 
>tried
>mount -u rw /
>and
>mount -u rw /dev/ad1s1 /
>with the same result, no permission error
>next idea or did i get the command wrong
> 
> 
> Yes, the command is wrong.
> It is "mount -u -w [ device | mount point ]"
> 
> Nikos
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Re: remounting a drive

2007-06-22 Thread Steel City Phantom

   i tried that command as well, still got the operation not permitted
   error
   Nikos Vassiliadis wrote:

On Friday 22 June 2007 00:30, Steel City Phantom wrote:
  

   tried
   mount -u rw /
   and
   mount -u rw /dev/ad1s1 /
   with the same result, no permission error
   next idea or did i get the command wrong


Yes, the command is wrong.
It is "mount -u -w [ device | mount point ]"

Nikos
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Re: remounting a drive

2007-06-22 Thread Nikos Vassiliadis
On Friday 22 June 2007 20:33, Steel City Phantom wrote:
> 
> 
> 

Please, use plain text when posting to this list!

> i tried that command as well, still got the operation not permitted
> error

Is the filesystem clean? can you "fsck /" just in case?

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Re: remounting a drive

2007-06-22 Thread Nikos Vassiliadis
On Friday 22 June 2007 00:30, Steel City Phantom wrote:
>tried
>mount -u rw /
>and
>mount -u rw /dev/ad1s1 /
>with the same result, no permission error
>next idea or did i get the command wrong

Yes, the command is wrong.
It is "mount -u -w [ device | mount point ]"

Nikos
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Re: remounting a drive

2007-06-21 Thread Jonathan Horne
On Thursday 21 June 2007 16:30:11 Steel City Phantom wrote:
>tried
>mount -u rw /
>and
>mount -u rw /dev/ad1s1 /
>with the same result, no permission error
>next idea or did i get the command wrong
>Lowell Gilbert wrote:
>
> Steel City Phantom [1]<[EMAIL PROTECTED]> writes:
>
>
>
> ok, i had a working bsd system.
>
> i shut it down, and removed a drive from it to use in another computer
>
> i turn it on and i get mounting errors, nothing unsual, can't find drives
>
> from the manualroot prompt i put in the path to the root partition to
> the drive that is still in the machine
>
> i boot to single user mode
>
> im now trying to edit my fstab so i can boot normally (the drive
> numbers moved from ad1 to ad0 because i removed a hardrive)
>
> i can see all the files, i mounted my /usr partition, but for some
> reason i can't remount the / parition to edit the fstab.  when i enter
> the command mount -o rw / i get operation not permitted.  i tried
> mount -o rw /dev/ad1s1 /  and mount -o rw /dev/ad0s1 /and got the same
> thing.  ive used this in the past and it works, i don't know why its
> not working now.  any ideas?
>
> bsd 6.2 if it matters
>
> when i do mount
> /dev/ad1s1 on / (ufs, local, read-only)
> devfs on /dev (devfs, local)
> /dev/ad1s1f on /usr/ (ufs, local, soft-updates)
>
>
> Try the "-u" (update) option.
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might try a freesbie live cd or freebsd install cd,  to find your partition 
and make your edits to the fstab there. 

good luck,
-- 
Jonathan Horne
http://dfwlpiki.dfwlp.org
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Re: remounting a drive

2007-06-21 Thread Steel City Phantom

   tried
   mount -u rw /
   and
   mount -u rw /dev/ad1s1 /
   with the same result, no permission error
   next idea or did i get the command wrong
   Lowell Gilbert wrote:

Steel City Phantom [1]<[EMAIL PROTECTED]> writes:



ok, i had a working bsd system.

i shut it down, and removed a drive from it to use in another computer

i turn it on and i get mounting errors, nothing unsual, can't find drives

from the manualroot prompt i put in the path to the root partition to
the drive that is still in the machine

i boot to single user mode

im now trying to edit my fstab so i can boot normally (the drive
numbers moved from ad1 to ad0 because i removed a hardrive)

i can see all the files, i mounted my /usr partition, but for some
reason i can't remount the / parition to edit the fstab.  when i enter
the command mount -o rw / i get operation not permitted.  i tried
mount -o rw /dev/ad1s1 /  and mount -o rw /dev/ad0s1 /and got the same
thing.  ive used this in the past and it works, i don't know why its
not working now.  any ideas?

bsd 6.2 if it matters

when i do mount
/dev/ad1s1 on / (ufs, local, read-only)
devfs on /dev (devfs, local)
/dev/ad1s1f on /usr/ (ufs, local, soft-updates)


Try the "-u" (update) option.
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Re: remounting a drive

2007-06-21 Thread Lowell Gilbert
Steel City Phantom <[EMAIL PROTECTED]> writes:

> ok, i had a working bsd system.
>
> i shut it down, and removed a drive from it to use in another computer
>
> i turn it on and i get mounting errors, nothing unsual, can't find drives
>
> from the manualroot prompt i put in the path to the root partition to
> the drive that is still in the machine
>
> i boot to single user mode
>
> im now trying to edit my fstab so i can boot normally (the drive
> numbers moved from ad1 to ad0 because i removed a hardrive)
>
> i can see all the files, i mounted my /usr partition, but for some
> reason i can't remount the / parition to edit the fstab.  when i enter
> the command mount -o rw / i get operation not permitted.  i tried
> mount -o rw /dev/ad1s1 /  and mount -o rw /dev/ad0s1 /and got the same
> thing.  ive used this in the past and it works, i don't know why its
> not working now.  any ideas?
>
> bsd 6.2 if it matters
>
> when i do mount
> /dev/ad1s1 on / (ufs, local, read-only)
> devfs on /dev (devfs, local)
> /dev/ad1s1f on /usr/ (ufs, local, soft-updates)

Try the "-u" (update) option. 
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remounting a drive

2007-06-21 Thread Steel City Phantom

ok, i had a working bsd system.

i shut it down, and removed a drive from it to use in another computer

i turn it on and i get mounting errors, nothing unsual, can't find drives

from the manualroot prompt i put in the path to the root partition to 
the drive that is still in the machine


i boot to single user mode

im now trying to edit my fstab so i can boot normally (the drive numbers 
moved from ad1 to ad0 because i removed a hardrive)


i can see all the files, i mounted my /usr partition, but for some 
reason i can't remount the / parition to edit the fstab.  when i enter 
the command mount -o rw / i get operation not permitted.  i tried mount 
-o rw /dev/ad1s1 /  and mount -o rw /dev/ad0s1 /and got the same thing.  
ive used this in the past and it works, i don't know why its not working 
now.  any ideas?


bsd 6.2 if it matters

when i do mount
/dev/ad1s1 on / (ufs, local, read-only)
devfs on /dev (devfs, local)
/dev/ad1s1f on /usr/ (ufs, local, soft-updates)

thanks
willie

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