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Hello Heinz,
Forgive me for writing in English. As I come from
the United States I am embarassingly uni-lingual. I have been
working with LVM for several months now and finally have had the
opportunity to get into the guts of the lvm configuration. I am
preparing myself for the situation where my LVM environment gets corrupted in
some manner. Actually, last week I encountered a problem with LVM and was
unable to quickly recover so I ended up simply rebuilding the LVM PV's, VG's and
LV's and restoring data. Fortunately, it was an easy restore.
I have been comparing the vgscan utility with vgcfgrestore. In a
test environment I have deleted the /etc/lvm* stuff and even deleted the
/dev/lvm* stuff and successfully recovered the VG and LV by simply doing a
vgscan. Whew... nice... I understand vgcfgbackup and
vgcfgrestore but am not sure when I would need to use the configuration
backup. The VGDA as I understand it is stored on the
PV's. If I have the PV's intact I therefore have the VGDA and hence
am able to recover using vgscan. When would I need to use
vgcfgrestore? I have found much information on LVM on the web but
nothing that really pinpoints my question. If there is something out there
that I can refer to, please tell me.
Regards,
Rob
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