Luca> how are you using device mapper?
To setup some volume groups on top of an MD array of two mirrored
disks. I think. All I know currently is that it's required by LVM2
to have it setup and around. I have /dev/mapper/data_vg-*_lv and some
other devices currently. All I really want are the LVM2 devices to be
covered. And since those devices are built on top of /dev/md0 (for
now, might add more later), I don't need other devices looked at.
Period.
Can you tell me what I'm doing wrong here?
Luca> recent versions of lvm2 ignore md components by default or you
Luca> can specify a filter in the configuration file.
Which file is that? There's nothing in /etc/dm/... that I can see.
There's some stuff in /etc/lvm/lvm.conf, but I haven't touched that at
all.
Basically, I don't want Device Mapper to scan and take over all my
disks. From my dmesg file, I see a bunch of these on startup now:
device-mapper: error adding target to table
device-mapper: : dm-linear: Device lookup failed
device-mapper: error adding target to table
device-mapper: : dm-linear: Device lookup failed
device-mapper: error adding target to table
device-mapper: : dm-linear: Device lookup failed
device-mapper: error adding target to table
device-mapper: : dm-linear: Device lookup failed
device-mapper: error adding target to table
device-mapper: : dm-linear: Device lookup failed
And I don't know where they are coming from.
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