20 Oct
2025
20 Oct
'25
9 p.m.
On Mon, Oct 20, 2025 at 9:29 PM Iban Cabrillo <cabrillo@ifca.unican.es> wrote:
Good morning,
I am having trouble mapping volumes using rbd. It used to work with v1 (I haven't tried it in a couple of years), but now we are using Quincy (v17) and I am getting this error:
rbd --mon-host 10.10.3.1:3300,10.10.3.2:3300,10.10.3.3:3300 -p volumes map volume-c33b1ea9-c976-438b-8c3c-21cdf2db8bfd
rbd: sysfs write failed
In some cases useful info is found in syslog - try “dmesg | tail”.
Hi Iban, To use v2, you need to pass the desired mode as well -- try "-o ms_mode=prefer-crc". Thanks, Ilya