ghbiz
76 Posts
Quote from ghbiz on January 3, 2021, 12:04 am
Currently, default OSD weight is the size of the disk.
When adding a new OSD into the cluster, stability issues come up which affect iSCSI disks and eventually causes disruption to production environment.
One idea is to have a default OSD weight setting that can add a new OSD in and automatically add it as 0.00 crush weight.
This way, it can be SLOWLY rolled into the cluster.
Currently, default OSD weight is the size of the disk.
When adding a new OSD into the cluster, stability issues come up which affect iSCSI disks and eventually causes disruption to production environment.
One idea is to have a default OSD weight setting that can add a new OSD in and automatically add it as 0.00 crush weight.
This way, it can be SLOWLY rolled into the cluster.
admin
2,921 Posts
Quote from admin on January 3, 2021, 9:45 pm
This is a good suggestion for future addition.
In latest version 2.7 we added OSD crush weight page in ui and enhanced the backfill speed presets, this could be used to manually control backfill when adding new OSD. But ofcourse doing it in a more intelligent way is much better. Note that the PetaSAN defaults are already lower than Ceph default values.
This is a good suggestion for future addition.
In latest version 2.7 we added OSD crush weight page in ui and enhanced the backfill speed presets, this could be used to manually control backfill when adding new OSD. But ofcourse doing it in a more intelligent way is much better. Note that the PetaSAN defaults are already lower than Ceph default values.
