Hello Marian, Thank for your explanation, it's very helpful to me. Thanks Gang >>> On 2018/8/3 at 22:05, in message <d8834798-6861-3e24-754b-c45f5947abd9@xxxxxxxxxx>, Marian Csontos <mcsontos@xxxxxxxxxx> wrote: > 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/ _______________________________________________ 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/
