Hello I have a E250 running Debian/stable with Linux 2.4.20 (vanilla kernel, except for xfs). Three weeks ago I created a LV with an xfs on it. I also created a backupscript that uses snapshots. For two weeks everything worked fine. Then I got oopses during the backup (mainly from kupdated). After that the system was rebooted. I had to boot with init=/bin/sh since the system freezed while mounting the xfs partitions (another story). I did a vgscan and a vgchange. After that I did a "lvdisplay /dev/vg1/lv_snapshot" and got the usual output and 3 times the error "Trying to vfree() nonexistent vm area (addr)". Then I tried "lvdisplay /dev/vg1/lv" and also got the vfree()-error and a Segmention-Fault after the line that says that there is a snapshot of this LV. I removed the snapshot and "lvdisplay /dev/vg1/lv" worked fine. After that I could bring the whole system in a working state. I could reproduce this. The address in the vfree()-error message only changes after a reboot. I also found older vfree()-errors in the log. The Backtrace of the oops always ends in | Trace; 005143e8 <lvm_map+488/580> | Trace; 005144e8 <lvm_make_request_fn+8/40> Another related problem is, that "cat /proc/lvm/global" in the most cases doesn't output the usual data but some random memory. Its really odd. But if I try often enough I sometimes also get the right output (and no, I didn't calculated the probability). The other files in /proc/lvm work fine. Since I moved the important stuff to another system I can do some tests and provide further informations. Daniel _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
