Re: FreeBSD crashed - trying to find out why
Le Fri, 12 Nov 2010 17:26:39 +0400, Rakhesh Sasidharan free...@rakhesh.net a écrit : Hello, Any idea why kernel crashed, or what I can do to prevent this in future? I understand from the forums that this could be due to bad memory or bad hard disk, but I was wondering whether this could also be due to any incompatibilities with KVM (triggered by tmux perhaps). No idea, the best is to configure the machine to save the dump and after (if it happens again) submit a trace of the core dump. This is explained in : http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html Regards. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
FreeBSD crashed - trying to find out why
Hello, I have a FreeBSD 8.1-RELEASE machine running inside a KVM VPS. I installed tmux a few days back, and today I was trying to update all my ports via portupgrade. Everything was going fine, so after a while I detached from the tmux session and disconnected from the machine (was connected via SSH). When I returned a few hours later, I see that the machine had rebooted. It appears that the machine rebooted due to a kernel fault. From the timestamps I see that the machine rebooted some 10-15 minutes before I returned, so it looks like portupgrade and tmux etc were working fine until then. Here's the messages from /var/log/messages - -8--- kernel: Fatal trap 12: page fault while in kernel mode kernel: cpuid = 0; apic id = 00 kernel: fault virtual address = 0x250 kernel: fault code = supervisor read data, page not present kernel: instruction pointer = 0x20:0x8052e574 kernel: stack pointer = 0x28:0xff800019c8a0 kernel: frame pointer = 0x28:0xff800019c8c0 kernel: code segment= base 0x0, limit 0xf, type 0x1b kernel: = DPL 0, pres 1, long 1, def32 0, gran 1 kernel: processor eflags= interrupt enabled, resume, IOPL = 0 kernel: current process = 50496 (tmux) kernel: trap number = 12 kernel: panic: page fault kernel: cpuid = 0 kernel: Uptime: 3d22h30m42s kernel: Cannot dump. Device not defined or unavailable. kernel: Automatic reboot in 15 seconds - press a key on the console to abort -8--- I went into all the background about tmux above since the logs highlight tmux as the currently running process. Any idea why kernel crashed, or what I can do to prevent this in future? I understand from the forums that this could be due to bad memory or bad hard disk, but I was wondering whether this could also be due to any incompatibilities with KVM (triggered by tmux perhaps). Thanks, Rakhesh ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
FreeBSD crashed
Hello all: My FreeBSD crashed. It boots fine but can't mount root directory. Here is the message: / ... Trying to mount root from ufs:/dev/ad0s2a Manual root filesystem specification: fstype:device Mount device using filesystem fstype eg. ufs:da0s1a ? List valid disk boot devices empty line Abort manual input mountroot /// Could any gurus here help me out this? I just want to save the files in the home directory so that I can rebuild the system. Regards Dave ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: FreeBSD crashed
Just type ? to get the possible values. If this not help use the livefs cd to start a shell and mount the disk. Cheers, Norman 2008/5/25 gahn [EMAIL PROTECTED]: Hello all: My FreeBSD crashed. It boots fine but can't mount root directory. Here is the message: / ... Trying to mount root from ufs:/dev/ad0s2a Manual root filesystem specification: fstype:device Mount device using filesystem fstype eg. ufs:da0s1a ? List valid disk boot devices empty line Abort manual input mountroot /// Could any gurus here help me out this? I just want to save the files in the home directory so that I can rebuild the system. Regards Dave ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: FreeBSD crashed
On Sun, May 25, 2008 at 01:52:05AM -0700, gahn wrote: Could any gurus here help me out this? I just want to save the files in the home directory so that I can rebuild the system. Boot with a FreeBSD installation or live CD/DVD and mount the home partition and burn the files on a CD or DVD, or copy them with scp to an other system or mount a remote filesystem like CIFS/Samba/NFS and copy the files on that filesystem. Or restore them from your most recent backup :) -- Regards, Richard. /* Homo Sapiens non urinat in ventum */ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: FreeBSD crashed
gahn wrote: Hello all: My FreeBSD crashed. It boots fine but can't mount root directory. Here is the message: / ... Trying to mount root from ufs:/dev/ad0s2a Manual root filesystem specification: fstype:device Mount device using filesystem fstype eg. ufs:da0s1a ? List valid disk boot devices empty line Abort manual input mountroot try to find if da0s1a is the right disk: `lsdev' may help then `set currdev disk' and check the content of the current disk with `ls' Henri /// Could any gurus here help me out this? I just want to save the files in the home directory so that I can rebuild the system. Regards Dave ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: FreeBSD crashed
At 03:52 AM 5/25/2008, gahn wrote: Hello all: My FreeBSD crashed. It boots fine but can't mount root directory. Here is the message: / ... Trying to mount root from ufs:/dev/ad0s2a Manual root filesystem specification: fstype:device Mount device using filesystem fstype eg. ufs:da0s1a ? List valid disk boot devices empty line Abort manual input mountroot /// Could any gurus here help me out this? I just want to save the files in the home directory so that I can rebuild the system. Regards Dave Boot a cd, then copy your files to another system, or to removable media. -Derek -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
