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cephfs: enable read affinity #4153

Merged
merged 3 commits into from
Nov 22, 2023
Merged

cephfs: enable read affinity #4153

merged 3 commits into from
Nov 22, 2023

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iPraveenParihar
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Describe what this PR does

  • cephfs: add capability to automatically enable read affinity
    This commit makes use of crush location labels from node labels to supply crush_location and read_from_replica=localize options during mount. Using these options, cephfs
    will be able to redirect reads to the closest OSD, improving performance.

Fixes: #4149

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@iPraveenParihar iPraveenParihar changed the title cepfs: add capability to automatically enable read affinity cephfs: add capability to automatically enable read affinity Sep 28, 2023
@mergify mergify bot added the component/cephfs Issues related to CephFS label Sep 28, 2023
@iPraveenParihar iPraveenParihar marked this pull request as ready for review September 29, 2023 04:30
@iPraveenParihar iPraveenParihar marked this pull request as draft September 29, 2023 04:35
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This pull request has been automatically marked as stale because it has not had recent activity. It will be closed in two weeks if no further activity occurs. Thank you for your contributions.

@github-actions github-actions bot added the stale label Oct 29, 2023
@yati1998 yati1998 removed the stale label Nov 3, 2023
@iPraveenParihar iPraveenParihar force-pushed the cephfs/enable-read-affinity branch 3 times, most recently from 4d028e7 to 6b766e9 Compare November 15, 2023 10:46
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mergify bot commented Nov 15, 2023

This pull request now has conflicts with the target branch. Could you please resolve conflicts and force push the corrected changes? 🙏

@iPraveenParihar iPraveenParihar self-assigned this Nov 15, 2023
@iPraveenParihar iPraveenParihar force-pushed the cephfs/enable-read-affinity branch 3 times, most recently from 429c46c to 77a33c5 Compare November 16, 2023 13:51
@iPraveenParihar iPraveenParihar marked this pull request as ready for review November 16, 2023 17:02
@iPraveenParihar iPraveenParihar changed the title cephfs: add capability to automatically enable read affinity cephfs: enable read affinity Nov 16, 2023
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/test ci/centos/mini-e2e/k8s-1.28

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/test ci/centos/mini-e2e-helm/k8s-1.27

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/test ci/centos/mini-e2e-helm/k8s-1.27

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/test ci/centos/mini-e2e/k8s-1.28

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  I1117 06:00:09.279048   24407 cephcmds.go:98] ID: 31 Req-ID: 0001-0024-ad7d7485-6a6b-42f7-94e3-1d8d02f2ae14-0000000000000001-30434073-3a09-4b94-b917-14ea5b34ab79 an error (exit status 33) occurred while running ceph-fuse args: [/var/lib/kubelet/plugins/kubernetes.io/csi/cephfs.csi.ceph.com/ccc163dda7c746a00452c94bf9e5bf1422e9cc1013a34dfba8e4699b02ccdfb9/globalmount -m rook-ceph-mon-a.rook-ceph.svc.cluster.local:6789 -c /etc/ceph/ceph.conf -n client.cephcsi-cephfs-node --keyfile=***stripped*** -r /volumes/e2e/csi-vol-30434073-3a09-4b94-b917-14ea5b34ab79/1232d1e8-33c2-49a3-badc-d875ba15a341 -o nonempty,default_permissions,read_from_replica=localize,crush_location=region:east|zone:east-zone1 --client_mds_namespace=myfs]
  E1117 06:00:09.279084   24407 nodeserver.go:322] ID: 31 Req-ID: 0001-0024-ad7d7485-6a6b-42f7-94e3-1d8d02f2ae14-0000000000000001-30434073-3a09-4b94-b917-14ea5b34ab79 failed to mount volume 0001-0024-ad7d7485-6a6b-42f7-94e3-1d8d02f2ae14-0000000000000001-30434073-3a09-4b94-b917-14ea5b34ab79: an error (exit status 33) occurred while running ceph-fuse args: [/var/lib/kubelet/plugins/kubernetes.io/csi/cephfs.csi.ceph.com/ccc163dda7c746a00452c94bf9e5bf1422e9cc1013a34dfba8e4699b02ccdfb9/globalmount -m rook-ceph-mon-a.rook-ceph.svc.cluster.local:6789 -c /etc/ceph/ceph.conf -n client.cephcsi-cephfs-node --keyfile=***stripped*** -r /volumes/e2e/csi-vol-30434073-3a09-4b94-b917-14ea5b34ab79/1232d1e8-33c2-49a3-badc-d875ba15a341 -o nonempty,default_permissions,read_from_replica=localize,crush_location=region:east|zone:east-zone1 --client_mds_namespace=myfs] stderr: 2023-11-17T06:00:08.253+0000 7f4b3c7ce580 -1 init, newargv = 0x55d0d853fe60 newargc=17
  ceph-fuse[43995]: starting ceph client
  fuse: unknown option `read_from_replica=localize'
  ceph-fuse[43995]: fuse failed to start
  2023-11-17T06:00:08.265+0000 7f4b3c7ce580 -1 fuse_lowlevel_new failed

@Rakshith-R, looks like read_from_replica=localize option is not supported by fuse mounter?

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/test ci/centos/mini-e2e/k8s-1.28

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Madhu-1 commented Nov 17, 2023 

  I1117 06:00:09.279048   24407 cephcmds.go:98] ID: 31 Req-ID: 0001-0024-ad7d7485-6a6b-42f7-94e3-1d8d02f2ae14-0000000000000001-30434073-3a09-4b94-b917-14ea5b34ab79 an error (exit status 33) occurred while running ceph-fuse args: [/var/lib/kubelet/plugins/kubernetes.io/csi/cephfs.csi.ceph.com/ccc163dda7c746a00452c94bf9e5bf1422e9cc1013a34dfba8e4699b02ccdfb9/globalmount -m rook-ceph-mon-a.rook-ceph.svc.cluster.local:6789 -c /etc/ceph/ceph.conf -n client.cephcsi-cephfs-node --keyfile=***stripped*** -r /volumes/e2e/csi-vol-30434073-3a09-4b94-b917-14ea5b34ab79/1232d1e8-33c2-49a3-badc-d875ba15a341 -o nonempty,default_permissions,read_from_replica=localize,crush_location=region:east|zone:east-zone1 --client_mds_namespace=myfs]
  E1117 06:00:09.279084   24407 nodeserver.go:322] ID: 31 Req-ID: 0001-0024-ad7d7485-6a6b-42f7-94e3-1d8d02f2ae14-0000000000000001-30434073-3a09-4b94-b917-14ea5b34ab79 failed to mount volume 0001-0024-ad7d7485-6a6b-42f7-94e3-1d8d02f2ae14-0000000000000001-30434073-3a09-4b94-b917-14ea5b34ab79: an error (exit status 33) occurred while running ceph-fuse args: [/var/lib/kubelet/plugins/kubernetes.io/csi/cephfs.csi.ceph.com/ccc163dda7c746a00452c94bf9e5bf1422e9cc1013a34dfba8e4699b02ccdfb9/globalmount -m rook-ceph-mon-a.rook-ceph.svc.cluster.local:6789 -c /etc/ceph/ceph.conf -n client.cephcsi-cephfs-node --keyfile=***stripped*** -r /volumes/e2e/csi-vol-30434073-3a09-4b94-b917-14ea5b34ab79/1232d1e8-33c2-49a3-badc-d875ba15a341 -o nonempty,default_permissions,read_from_replica=localize,crush_location=region:east|zone:east-zone1 --client_mds_namespace=myfs] stderr: 2023-11-17T06:00:08.253+0000 7f4b3c7ce580 -1 init, newargv = 0x55d0d853fe60 newargc=17
  ceph-fuse[43995]: starting ceph client
  fuse: unknown option `read_from_replica=localize'
  ceph-fuse[43995]: fuse failed to start
  2023-11-17T06:00:08.265+0000 7f4b3c7ce580 -1 fuse_lowlevel_new failed

@Rakshith-R, looks like read_from_replica=localize option is not supported by fuse mounter?

Fuse might not support this option, you can to skip and log it in the nodeplugin.

Rakshith-R
Rakshith-R requested changes Nov 22, 2023
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docs/deploy-cephfs.md Outdated
Comment on lines 234 to 235
Refer [krbd-options](https://docs.ceph.com/en/latest/man/8/rbd/#kernel-rbd-krbd-options)
for more details.
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This points to krbd mount options,
These read affinity mount options are not documented for cephfs kernel mounter. I'll ask for it to be documented at https://docs.ceph.com/en/latest/man/8/mount.ceph/#options.

Let's remove these two lines for now.

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Done

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Rakshith-R commented Nov 22, 2023 •
edited

@Mergifyio rebase

@iPraveenParihar @Rakshith-R
cephfs: add read affinity mount option
55f94b9 
This commit makes use of crush location labels from node
labels to supply `crush_location` and `read_from_replica=localize`
options during mount. Using these options, cephfs
will be able to redirect reads to the closest OSD,
improving performance.

Signed-off-by: Praveen M <m.praveen@ibm.com>
@iPraveenParihar @Rakshith-R
helm: add option to enable read affinity for CephFS
7955318 
This commit adds --enable-read-affinity flag to
enable read affinity for CephFS.

Signed-off-by: Praveen M <m.praveen@ibm.com>
@iPraveenParihar @Rakshith-R
doc: add documentation for read affinity
0cc6db9 
This commit adds documentation about read affinity supported
for CephFS subvolumes.

Signed-off-by: Praveen M <m.praveen@ibm.com>
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mergify bot commented Nov 22, 2023

rebase

✅ Branch has been successfully rebased

@Rakshith-R Rakshith-R requested a review from a team November 22, 2023 08:46
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@Mergifyio rebase

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mergify bot commented Nov 22, 2023

rebase

✅ Nothing to do for rebase action

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@Mergifyio queue

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mergify bot commented Nov 22, 2023 •
edited

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✅ The pull request has been merged automatically

The pull request has been merged automatically at 00c12b3

@mergify mergify bot added the ok-to-test Label to trigger E2E tests label Nov 22, 2023
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/test ci/centos/k8s-e2e-external-storage/1.26

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/test ci/centos/upgrade-tests-cephfs

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/test ci/centos/mini-e2e-helm/k8s-1.26

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/test ci/centos/k8s-e2e-external-storage/1.28

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/test ci/centos/k8s-e2e-external-storage/1.27

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/test ci/centos/upgrade-tests-rbd

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/test ci/centos/mini-e2e/k8s-1.26

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/test ci/centos/mini-e2e-helm/k8s-1.28

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/test ci/centos/mini-e2e-helm/k8s-1.27

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/test ci/centos/mini-e2e/k8s-1.28

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/test ci/centos/mini-e2e/k8s-1.27

@ceph-csi-bot ceph-csi-bot removed the ok-to-test Label to trigger E2E tests label Nov 22, 2023
@mergify mergify bot merged commit 00c12b3 into ceph:devel Nov 22, 2023
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@Rakshith-R Rakshith-R Rakshith-R approved these changes

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cephfs: add capability to automatically enable read affinity
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