Open Emmenemoi opened 8 years ago
This happens all the time after some load, making rbd-nbd impossible to use: the fs freezes. Impossible to migrate VMs as well as a consequence. Guests are PVHVM.
Will test using PV guests.
rbd images where created with images-format 2 (needing kernel >= 3.11). Will try if rbd-nbd is more stable using image-format 1.
rbdsr seems more stable using kernel rbd + image-format 1. No i/o wait alert for 2 days (PVHVM and PV).
Hi, Is "rbd cache" enabled on the client in ceph.conf? Try to disable it.
Problem persists with rbd cache off. Can't use rbd-nbd... even with only PV guests.
When several rbd-nbd images are mapped on a host, commands like "vgs" or "fdisk -l" hangs on this host, and impossible to kill those commands.