Hello everybody, I am using stock ubuntu natty with lvmlib 2.02.66: root@11:/mnt/work/alex# uname -a Linux 11 2.6.38-8-server #42-Ubuntu SMP Mon Apr 11 03:49:04 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux In my code I open a VG, iterate over all the LVs and then call lvm_lv_deactivate() on each LV. The return value is 0, and also immediately after that, I call lvm_lv_is_active() for each LV and assert that it returns 0 (not-active). Later in the code, I close the VG handle. However, when I issue lvdisplay from command-line, I still see: LV Status available and the dm device files for the LVs are also present (/dev/dm-0 etc). As a result I cannot later stop the underlying md devices (PVs) using 'mdadm --stop'. If I do lvchange -an from the command line later, it succeeds, LV status becomes 'NOT available' and I am able to stop the md arrays. >From looking at the code of lvmlib, it looks like lvm_lv_deactivate() does not require lvm_vg_write(); I see that lvchange implementation does not seem to call this when de-activating LVs. Still, I have tried to call lvm_vg_write() with same effect. No other application on the machine uses the same VG (at least not that I know of). Can anybody please advise what I might be missing. Thanks, Alex. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/