David Denny wrote:
Dear BLFS,
I would be grateful for feedback on other's experience setting up LVM2
based on the BLFS instructions to determine if I've goofed somewhere, or
just hit a branch not covered.
I built my system based on LFS / BLFS. I've kept things pretty well up to
date and incrementally added a few things here and there.
I bought some big drives and am now working to implement LVM2 based on the
BLFS development version (9/23.)
I've built, tested and installed the LVM and associated software and
configured and populated several volumes, then rebooted.
On booting, the LVM volumes do not mount as they should. Note that my
boot / system isn't on the LVM volumes.
No errors are thrown, logs are clean. In fact, it seems that nothing has
happened at all. The system hangs at fstab processing and then enters
rescue state.
If I manually execute "lvchange -y a" then the drives will pop online and
mount perfectly. I can go to the multi-user state.
I was able to modify and install three of the systemd scripts that come
with LVM2 and modify one setting in lvm.conf to use lvmetad now drives
mount on boot. I'm not sure this is all I should do, but at least the
booting issue is addressed.
I do not see how the current software (udev rules, systemd units) handles
boot-up, and I would be grateful to understand if other people are
successful in having LVM go online at boot or not. If this is not
handled, I could offer some very simple redlines for consideration to the
BLFS write-up, otherwise I need to go find my problem.
Here are the configuration / versions I'm working with:
* BLFS Systemd development version, 9/22
* systemd-234
* BLFS systemd units, 20160602
* LVM2-2.02.171
* mdadm-4.0
* blfs-systemd-unit-20160602
* thin-provisioning from repository as of 9/22
I understand your problems. The LVM2 codes is not well tested so there
may be some issues. What I would suggest as an alternative is to use
btrfs instead. It seems to be easier to use/manage than LVM2.
-- Bruce
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