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Re: [linux-lvm] strange behavior with 1.0.5 on Linux 2.4.19?

On Sun, Oct 27, 2002 at 09:29:35PM -0800, Gregory K. Ade wrote:
> On Wed, 2002-10-09 at 04:36, Heinz J . Mauelshagen wrote:
> > <pickymode>
> > True, it is not. Manual page says "OriginalLogicalVolumePath".
> > </pickymode>
> root burpr(pts/0):~ 24 # lvcreate --snapshot --extents 512 --name tmp_snap /dev/vg00/tmp
> lvcreate -- INFO: using default snapshot chunk size of 64 KB for "/dev/vg00/tmp_snap"
> Segmentation fault
> root burpr(pts/0):~ 25 #
> This is not good.  This is a system that has been recently rebooted, and
> come up clean.  This i sthe very first LVM command I have run by hand
> since the boot.
> In terms of the other problems I was having, I think I _may_ have gotten
> those fixed (i.e., things like `find /` killing the system) by some
> friendly souls in the linux-kernel mailing list with a VM patch.  There
> seemed to be a bug in largemem systems that was being exercised.
> Now, I just rebooted the system with that patch on a fresh kernel: 
> Linux Kernel 2.4.19, patched with the VM patch, LVM 1.0.5 and Broadcom
> Gigabit Ethernet patches.
> I left for dinner, during which time nobody did anything to the
> machine.  I came back and decided to try creating a snapshot volume of
> /dev/vg00/tmp, and lvcreate segfaulted.  lvscan also segfaults, vgscan
> hangs, and vgdisplay and lvdisplay seem to still work.
> trying to create a test volume after that (`lvcreate --extents 512
> --name testvol vg00`) simply hangs.
> So, who do I give what information to so that we can trace down the base
> of this problem, and get a fix?  Ask me for whatever you need from the
> system, and I'll provide it if I can.

Run the kernel oops you probably got for "lvcreate --snapshot ..." through
ksymoops, please.

After that oops the LVM driver is in no sane state anyway which
is the reason for other LVM commands to behave strangely.

> Thanks again in advance,
> Gregory
> -- 
> Gregory K. Ade <gkade bigbrother net>
> http://bigbrother.net/~gkade
> OpenPGP Key ID: EAF4844B  keyserver: pgpkeys.mit.edu


Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***


Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
Mauelshagen Sistina com                           +49 2626 141200
                                                       FAX 924446

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