Hello List, I found lvm2-2.03 has some performance regression when system booting. My env as below: ``` x86-64 qemu vm, 2vcpu, 8G memory, 7 disks (per disk 1GB) each disk have 128 primary partition, each partition size is 6MB. total pvs: 896 (each partition create a pv), vgs 56 (every 16 pvs create a vg), lvs 56 (each vg create a lv). ``` When using lvm2-2.02, it only took about a few seconds to enter login prompt, but lvm2-2.03 took about 2mins. ## how to create lvm2-2.03.05 In fedora system, go to website: https://src.fedoraproject.org/rpms/lvm2/tree/master git clone https://src.fedoraproject.org/rpms/lvm2.git To use rpmbuild to create rpm package and install. And to run mkinitrd after changing the lvm.conf. ## teset result below time got from the command: systemd-analyze --no-pager blame the time line of "lvm2-pvscan@major:minor.service" centos 7.6 (lvm2-2.02.180): disable lvmetad: 2.341s enable lvmetad: I wait about more than two hours, the system can't enter login phase. fedora-server (kernel: 5.2.9-200 with default installed lvm2: lvm2-2.02.183-3) use_lvmetad=0: 187ms use_lvmetad=1: (no test) fedora-server (kernel: 5.2.9-200 with rpmbuild: lvm2-2.03.05) event_activation=1: 2min 3.661s event_activation=0: 1min 57.478s Could you give me some advice to locate this issue? Thank you. _______________________________________________ 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/
