在 2021年3月23日,13:12,duluxoz <duluxoz(a)gmail.com>
写道:
Hi All,
I've got a new issue (hopefully this one will be the last).
I have a working Ceph (Octopus) cluster with a replicated pool (my-pool), an
erasure-coded pool (my-pool-data), and an image (my-image) created - all *seems* to be
working correctly. I also have the correct Keyring specified
(ceph.client.my-id.keyring).
ceph -s is reporting all healthy.
The ec profile (my-ec-profile) was created with: ceph osd erasure-code-profile set
my-ec-profile k=4 m=2 crush-failure-domain=host
The replicated pool was created with: ceph osd pool create my-pool 100 100 replicated
Followed by: rbd pool init my-pool
The ec pool was created with: ceph osd pool create my-pool-data 100 100 erasure
my-ec-profile --autoscale-mode=on
Followed by: rbd pool init my-pool-data
The image was created with: rbd create -s 1T --data-pool my-pool-data my-pool/my-image
The Keyring was created with: ceph auth get-or-create client.my-id mon 'profile
rbd' osd 'profile rbd pool=my-pool' mgr 'profile rbd pool=my-pool' -o
/etc/ceph/ceph.client.my-id.keyring
On a centos8 client machine I have installed ceph-common, placed the Keyring file into
/etc/ceph/, and run the command: rbd device map my-pool/my-image --id my-id
All *seems* AOK.
However - and here's my issue - when I try to create a partition on /dev/rbd0 and/or
try to mount it, the client reports: fdisk: cannot open /dev/rbd0: Input/output error OR
mount: /my-rbd-bloc-device: special device /dev/rbd0 does not exist (respectively).
Hi Matthew,
I’m curious about why do you want to create a partition on an RBD device? You can directly
run mkfs on /dev/rbd0. If you want multiple partition, then why not just create multiple
RBD images.
Weiwen Hu
What am I doing wrong?
Thanks in advance for the help
Matthew J
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