Re: kernel panic: vm_object_reference
On Wed, Mar 27, 2002 at 08:28:50AM +, Ceri wrote: > > > Forcibly unmounting a file system that is in use will panic your > > > system. It's not exactly a bug, it's just how it works. :) > > > > > I don't agree. I know this is a little "foolproof" programming > > but I should return something like busy FS > > How would that be different from not forcing it ? That (or something similar) should be returned to the process accessing the unmounted fs, not the umount itself. Mark -- Mark Santcroos RIPE Network Coordination Centre http://www.ripe.net/home/mark/ New Projects Group/TTM To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: kernel panic: vm_object_reference
Michael Lucas wrote: > > Hello, > > Forcibly unmounting a file system that is in use will panic your > system. It's not exactly a bug, it's just how it works. :) > I don't agree. I know this is a little "foolproof" programming but I should return something like busy FS To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: kernel panic: vm_object_reference
Michael Lucas wrote: > Forcibly unmounting a file system that is in use will panic your > system. It's not exactly a bug, it's just how it works. :) "Forcibly trapping a butterfly with the provided butterfly net will destroy civilization. It's not exactly a bug, it's just how it works." Sheesh. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: kernel panic: vm_object_reference
No apologies neccessary :-). You may be right with respect to FreeBSD. In his BSD class Kirk describes a forcible unmount as a perfectly legitimate thing to do (albeit a bit traumatic for the users). It may just be a regression that crept in and, seeing as it is something that people seldom want to do, no one saw a need to fix it. -Kip > OK. That's not what I was told but back in 96 or so,but I suppose the > code is allowed to change. My apologies. :-) > > Could you please prepare a dump of this? See the developers' handbook > for details, or follow the pointers from the FAQ. Thanks! > > On Tue, Mar 26, 2002 at 07:20:37AM -0800, Kip Macy wrote: > > That is a bug. The system is supposed to iterate through all the vnodes hanging > > off the mount point and vgone them. According to Kirk at least this used to > > work. > > > > -Kip > > > > > > On Tue, 26 Mar 2002, Michael Lucas wrote: > > > > > Hello, > > > > > > Forcibly unmounting a file system that is in use will panic your > > > system. It's not exactly a bug, it's just how it works. :) > > > > > > On Tue, Mar 26, 2002 at 10:24:01AM +0200, Apache Man wrote: > > > > Hi. > > > > > > > > As i informed you earler the bug exists in freebsd 4.5. > > > > Kernel panics with `vm_object_reference: delay in getting object' > > > > when i copy files from a partition and at the same time dismount > > > > this partition (umount -f /cdrom). > > > > > > > > The sutuation is following. > > > > I mount /cdrom. Then start too many `cp' processes that copy > > > > some files from /cdrom. In other tty i umount -f /cdrom and > > > > kernel panics. > > > > > > > > Sorry if it's known bug. > > > > > > > > -- > > > > email: [EMAIL PROTECTED] > > > > > > > > > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > > > with "unsubscribe freebsd-hackers" in the body of the message > > > > > > -- > > > Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] > > > my FreeBSD column: http://www.oreillynet.com/pub/q/Big_Scary_Daemons > > > > > > http://www.blackhelicopters.org/~mwlucas/ > > > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > > with "unsubscribe freebsd-hackers" in the body of the message > > > > > -- > Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] > my FreeBSD column: http://www.oreillynet.com/pub/q/Big_Scary_Daemons > > http://www.blackhelicopters.org/~mwlucas/ > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: kernel panic: vm_object_reference
OK. That's not what I was told but back in 96 or so,but I suppose the code is allowed to change. My apologies. :-) Could you please prepare a dump of this? See the developers' handbook for details, or follow the pointers from the FAQ. Thanks! On Tue, Mar 26, 2002 at 07:20:37AM -0800, Kip Macy wrote: > That is a bug. The system is supposed to iterate through all the vnodes hanging > off the mount point and vgone them. According to Kirk at least this used to > work. > > -Kip > > > On Tue, 26 Mar 2002, Michael Lucas wrote: > > > Hello, > > > > Forcibly unmounting a file system that is in use will panic your > > system. It's not exactly a bug, it's just how it works. :) > > > > On Tue, Mar 26, 2002 at 10:24:01AM +0200, Apache Man wrote: > > > Hi. > > > > > > As i informed you earler the bug exists in freebsd 4.5. > > > Kernel panics with `vm_object_reference: delay in getting object' > > > when i copy files from a partition and at the same time dismount > > > this partition (umount -f /cdrom). > > > > > > The sutuation is following. > > > I mount /cdrom. Then start too many `cp' processes that copy > > > some files from /cdrom. In other tty i umount -f /cdrom and > > > kernel panics. > > > > > > Sorry if it's known bug. > > > > > > -- > > > email: [EMAIL PROTECTED] > > > > > > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > > with "unsubscribe freebsd-hackers" in the body of the message > > > > -- > > Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] > > my FreeBSD column: http://www.oreillynet.com/pub/q/Big_Scary_Daemons > > > > http://www.blackhelicopters.org/~mwlucas/ > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > with "unsubscribe freebsd-hackers" in the body of the message > > -- Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] my FreeBSD column: http://www.oreillynet.com/pub/q/Big_Scary_Daemons http://www.blackhelicopters.org/~mwlucas/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: kernel panic: vm_object_reference
That is a bug. The system is supposed to iterate through all the vnodes hanging off the mount point and vgone them. According to Kirk at least this used to work. -Kip On Tue, 26 Mar 2002, Michael Lucas wrote: > Hello, > > Forcibly unmounting a file system that is in use will panic your > system. It's not exactly a bug, it's just how it works. :) > > On Tue, Mar 26, 2002 at 10:24:01AM +0200, Apache Man wrote: > > Hi. > > > > As i informed you earler the bug exists in freebsd 4.5. > > Kernel panics with `vm_object_reference: delay in getting object' > > when i copy files from a partition and at the same time dismount > > this partition (umount -f /cdrom). > > > > The sutuation is following. > > I mount /cdrom. Then start too many `cp' processes that copy > > some files from /cdrom. In other tty i umount -f /cdrom and > > kernel panics. > > > > Sorry if it's known bug. > > > > -- > > email: [EMAIL PROTECTED] > > > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > with "unsubscribe freebsd-hackers" in the body of the message > > -- > Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] > my FreeBSD column: http://www.oreillynet.com/pub/q/Big_Scary_Daemons > > http://www.blackhelicopters.org/~mwlucas/ > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: kernel panic: vm_object_reference
Hello, Forcibly unmounting a file system that is in use will panic your system. It's not exactly a bug, it's just how it works. :) On Tue, Mar 26, 2002 at 10:24:01AM +0200, Apache Man wrote: > Hi. > > As i informed you earler the bug exists in freebsd 4.5. > Kernel panics with `vm_object_reference: delay in getting object' > when i copy files from a partition and at the same time dismount > this partition (umount -f /cdrom). > > The sutuation is following. > I mount /cdrom. Then start too many `cp' processes that copy > some files from /cdrom. In other tty i umount -f /cdrom and > kernel panics. > > Sorry if it's known bug. > > -- > email: [EMAIL PROTECTED] > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message -- Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] my FreeBSD column: http://www.oreillynet.com/pub/q/Big_Scary_Daemons http://www.blackhelicopters.org/~mwlucas/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
kernel panic: vm_object_reference
Hi. As i informed you earler the bug exists in freebsd 4.5. Kernel panics with `vm_object_reference: delay in getting object' when i copy files from a partition and at the same time dismount this partition (umount -f /cdrom). The sutuation is following. I mount /cdrom. Then start too many `cp' processes that copy some files from /cdrom. In other tty i umount -f /cdrom and kernel panics. Sorry if it's known bug. -- email: [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
