search

rposudnevskiy / RBDSR

RBDSR - XenServer/XCP-ng Storage Manager plugin for CEPH
GNU Lesser General Public License v2.1
58 stars 23 forks source link

vgs or fdisk -l hangs #15

Open Emmenemoi opened 8 years ago

Emmenemoi commented 8 years ago

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.

Emmenemoi commented 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.

Emmenemoi commented 8 years ago

rbd images where created with images-format 2 (needing kernel >= 3.11). Will try if rbd-nbd is more stable using image-format 1.

Emmenemoi commented 8 years ago

rbdsr seems more stable using kernel rbd + image-format 1. No i/o wait alert for 2 days (PVHVM and PV).

rposudnevskiy commented 7 years ago

Hi, Is "rbd cache" enabled on the client in ceph.conf? Try to disable it.

Emmenemoi commented 7 years ago

Problem persists with rbd cache off. Can't use rbd-nbd... even with only PV guests.