Create Bluestore OSD backed by SSD

Dont take my word for it on the WAL sizing – Check http://docs.ceph.com/docs/mimic/rados/configuration/bluestore-config-ref/ This script will create a spare 20G Logical volume to use as the WAL for a second spinner later if you need it export SSD=sdc export SPINNER=sda vgcreate ceph-ssd-0 /dev/$SSD vgcreate ceph-hdd-0 /dev/$SPINNER lvcreate –size 20G -n block-0 ceph-hdd-0 lvcreate -l 100%FREE […]

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KVM\Qemu\Openstack – Manage a live migration

virsh qemu-monitor-command {VMNAME} –pretty ‘{“execute”:”migrate_cancel”}’ Allow Virsh more downtime(If it cant keepup with RAM utilization) virsh migrate-setmaxdowntime VMNAME 2500   Check migration status virsh domjobinfo instance-000002ac Job type: Unbounded Operation: Outgoing migration Time elapsed: 1307956 ms Data processed: 118.662 GiB Data remaining: 9.203 MiB Data total: 8.005 GiB Memory processed: 118.662 GiB Memory remaining: 9.203 […]

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