On 08/03/2018 11:40 AM, Gang He wrote:
Hello List,
I want to upgrade LVM2/CLVM to v2.02.180 from v2.02.120, but there are some problems which I want to confirm with you guys.
1) How to migrate /etc/lvm/lvm.conf? since the existing configuration file does not include some new attributes,
could you help to figure out which new key attributes, which should be considered during the upgrade installation?
Have a look at lvmconfig command.
`lvmconfig --type diff`[1] can help you figure out what you changed.
And `lvmconfig --type new --sinceversion 2.02.120`[2] might be what you
are looking for.
[1]: Introduced in 2.02.119 so this should work even on your old
installation.
[2]: New in 2.02.136.
2) lvmpolld is necessary in LVM2/CLVM v2.02.180? I can find the related files in the installation file list
/sbin/lvmpolld
/usr/lib/systemd/system/lvm2-lvmpolld.service
/usr/lib/systemd/system/lvm2-lvmpolld.socket
this daemon should be enable by default? if we disable this daemon, LVM2/CLVM related features (e.g. pvmove) will be affected, or not?
pvmove should work mostly fine even without lvmpolld, the testsuite runs
both with and without lvmpolld.
I think the manpage of lvmpolld is good start:
The purpose of lvmpolld is to reduce
the number of spawned background pro‐
cesses per otherwise unique polling
operation. There should be only one.
It also eliminates the possibility of
unsolicited termination of background
process by external factors.
Process receiving SIGHUP was one of the "external factors".
3) any other places (e.g. configuration files, binary files, features, etc.), which should be considered during the upgrade?
lvm1 and pool format were removed in 2.02.178. There is a branch adding
them back if you need them - *2018-05-17-put-format1-and-pool-back*. At
least it does apply almost cleanly :-)
-- Martian
Thanks a lot.
Gang
_______________________________________________
linux-lvm mailing list
linux-lvm@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
_______________________________________________
linux-lvm mailing list
linux-lvm@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
