I continued doing some tests upon adding crypt devices to .cache. I created a PV over /dev/mapper/crypt10, then a VG over the PV. When I try to create a LV a get an internal error: jupiter:/etc/lvm# lvcreate -L8G -n home rs-crypt Internal error: unknown device-mapper task 16 Internal error: unknown device-mapper task 16 Logical volume "home" created jupiter:/etc/lvm# LV seems to be created but I'm scared of using it; not at least without knowing about the error. What does the former error mean? How to fix it? Is it reliable to use the LV, despite the internal errors? Saludos, --Roman -- PGP Fingerprint: 09BB EFCD 21ED 4E79 25FB 29E1 E47F 8A7D EAD5 6742 [Key ID: 0xEAD56742. Available at KeyServ] On Sun, 07 Nov 2004 15:01:10 +0100, you wrote: > >Hi, > >I need to create a PV over a /dev/mapper device in order to create a >crypted LVM system (*) on a Debian Woody with 2.6.9 kernel. > >I encrypted a partition (/dev/hda10) using DM-Crypt, getting >/dev/mapper/crypt10 device. > >When trying to create PV, I got the following error: >jupiter:/# pvcreate /dev/mapper/crypt10 > /dev/mapper/crypt10: Couldn't find device. > >I know how to temporaly fix the problem by adding the device to >/etc/lvm/.cache. But the problem is that I couldn't get it to be >permanent. I did several tests modifying /etc/lvm/lvm.conf and >re-running "vgchange" to re-read changes, but it didn't work. > >I've tried different lvm.conf configs like: > >filter = [ "a|/dev/mapper/crypt.*|" ] >(cause I'd like to have crypt10, crypt11 and so on) > >filter = [ "a|/dev/mapper/crypt10|" ] > >filter = [ "a/.*/" ] > >I mixed them with other directives like: >scan = [ "/dev" ] > >scan = [ "/dev/mapper" ] > >scan = [ "/dev/mapper" "/dev" ] > > >Nevertheless, when running vgscan, .cache is re-built without my crypt >device. What am I doing wrong? Is there any limitation on devices >scanned by vgscan? > >I'm using this version of LVM: >jupiter:/# lvm version > LVM version: 2.00.21 (2004-08-19) > Library version: 1.00.15-ioctl (2004-04-07) > Driver version: 4.1.0 > > >(*) My idea of Crypted LVM system is to have crypted PVs and then >building LVM over them. This way I got total flexibility provided by >LVM and the security based on encryption (eg: I can extend/reduce a >live&mounted crypted fs on-the-fly). Anyone using a similar setup and >could/want to provide more ideas or feeback about this? > > Saludos, > --Roman _______________________________________________ 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/
