Hi Could you please provide guidance on how to diagnose this issue: In this case, there are two Ceph clusters: cluster A, 4 nodes and cluster B, 3 node, in different locations. Both are already running RGW multi-site, A is master. Cephfs snapshot mirroring is being configured on the clusters. Cluster A is the primary, cluster B is the peer. Cephfs snapshot mirroring is being configured. The bootstrap import step on the primary node hangs. On the target cluster : --------------------------- "version": "16.2.5", "release": "pacific", "release_type": "stable" root@cr21meg16ba0101:/# ceph fs snapshot mirror peer_bootstrap create cephfs client.mirror_remote flex2-site {"token": "eyJmc2lkIjogImE2ZjUyNTk4LWU1Y2QtNGEwOC04NDIyLTdiNmZkYjFkNWRiZSIsICJmaWxlc3lzdGVtIjogImNlcGhmcyIsICJ1c2VyIjogImNsaWVudC5taXJyb3JfcmVtb3RlIiwgInNpdGVfbmFtZSI6ICJmbGV4Mi1zaXRlIiwgImtleSI6ICJBUUNmd01sa005MHBMQkFBd1h0dnBwOGowNEl2Qzh0cXBBRzliQT09IiwgIm1vbl9ob3N0IjogIlt2MjoxNzIuMTguNTUuNzE6MzMwMC8wLHYxOjE3Mi4xOC41NS43MTo2Nzg5LzBdIFt2MjoxNzIuMTguNTUuNzM6MzMwMC8wLHYxOjE3Mi4xOC41NS43Mzo2Nzg5LzBdIn0="} root@cr21meg16ba0101:/var/run/ceph# On the source cluster: ---------------------------- "version": "17.2.6", "release": "quincy", "release_type": "stable" root@fl31ca104ja0201:/# ceph -s cluster: id: d0a3b6e0-d2c3-11ed-be05-a7a3a1d7a87e health: HEALTH_OK services: mon: 3 daemons, quorum fl31ca104ja0202,fl31ca104ja0203,fl31ca104ja0201 (age 111m) mgr: fl31ca104ja0201.nwpqlh(active, since 11h), standbys: fl31ca104ja0203, fl31ca104ja0202 mds: 1/1 daemons up, 2 standby osd: 44 osds: 44 up (since 111m), 44 in (since 4w) cephfs-mirror: 1 daemon active (1 hosts) rgw: 3 daemons active (3 hosts, 1 zones) data: volumes: 1/1 healthy pools: 25 pools, 769 pgs objects: 614.40k objects, 1.9 TiB usage: 2.8 TiB used, 292 TiB / 295 TiB avail pgs: 769 active+clean root@fl31ca104ja0302:/# ceph mgr module enable mirroring module 'mirroring' is already enabled root@fl31ca104ja0302:/# ceph fs snapshot mirror peer_bootstrap import cephfs eyJmc2lkIjogImE2ZjUyNTk4LWU1Y2QtNGEwOC04NDIyLTdiNmZkYjFkNWRiZSIsICJmaWxlc3lzdGVtIjogImNlcGhmcyIsICJ1c2VyIjogImNsaWVudC5taXJyb3JfcmVtb3RlIiwgInNpdGVfbmFtZSI6ICJmbGV4Mi1zaXRlIiwgImtleSI6ICJBUUNmd01sa005MHBMQkFBd1h0dnBwOGowNEl2Qzh0cXBBRzliQT09IiwgIm1vbl9ob3N0IjogIlt2MjoxNzIuMTguNTUuNzE6MzMwMC8wLHYxOjE3Mi4xOC41NS43MTo2Nzg5LzBdIFt2MjoxNzIuMTguNTUuNzM6MzMwMC8wLHYxOjE3Mi4xOC41NS43Mzo2Nzg5LzBdIn0= root@fl31ca104ja0302:/var/run/ceph# ceph --admin-daemon /var/run/ceph/ceph-client.cephfs-mirror.fl31ca104ja0302.sypagt.7.94083135960976.asok status { "metadata": { "ceph_sha1": "d7ff0d10654d2280e08f1ab989c7cdf3064446a5", "ceph_version": "ceph version 17.2.6 (d7ff0d10654d2280e08f1ab989c7cdf3064446a5) quincy (stable)", "entity_id": "cephfs-mirror.fl31ca104ja0302.sypagt", "hostname": "fl31ca104ja0302", "pid": "7", "root": "/" }, "dentry_count": 0, "dentry_pinned_count": 0, "id": 5194553, "inst": { "name": { "type": "client", "num": 5194553 }, "addr": { "type": "v1", "addr": "10.45.129.5:0", "nonce": 2497002034 } }, "addr": { "type": "v1", "addr": "10.45.129.5:0", "nonce": 2497002034 }, "inst_str": "client.5194553 10.45.129.5:0/2497002034", "addr_str": "10.45.129.5:0/2497002034", "inode_count": 1, "mds_epoch": 118, "osd_epoch": 6266, "osd_epoch_barrier": 0, "blocklisted": false, "fs_name": "cephfs" } root@fl31ca104ja0302:/home/general# docker logs ceph-d0a3b6e0-d2c3-11ed-be05-a7a3a1d7a87e-cephfs-mirror-fl31ca104ja0302-sypagt --tail 10 debug 2023-08-03T05:24:27.413+0000 7f8eb6fc0280 0 ceph version 17.2.6 (d7ff0d10654d2280e08f1ab989c7cdf3064446a5) quincy (stable), process cephfs-mirror, pid 7 debug 2023-08-03T05:24:27.413+0000 7f8eb6fc0280 0 pidfile_write: ignore empty --pid-file debug 2023-08-03T05:24:27.445+0000 7f8eb6fc0280 1 mgrc service_daemon_register cephfs-mirror.5184622 metadata {arch=x86_64,ceph_release=quincy,ceph_version=ceph version 17.2.6 (d7ff0d10654d2280e08f1ab989c7cdf3064446a5) quincy (stable),ceph_version_short=17.2.6,container_hostname=fl31ca104ja0302,container_image=quay.io/ceph/ceph@sha256:af79fedafc42237b7612fe2d18a9c64ca62a0b38ab362e614ad671efa4a0547e,cpu=Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz,distro=centos,distro_description=CentOS Stream 8,distro_version=8,hostname=fl31ca104ja0302,id=fl31ca104ja0302.sypagt,instance_id=5184622,kernel_description=#82-Ubuntu SMP Tue Jun 6 23:10:23 UTC 2023,kernel_version=5.15.0-75-generic,mem_swap_kb=8388604,mem_total_kb=527946928,os=Linux} debug 2023-08-03T05:27:10.419+0000 7f8ea1b2c700 0 client.5194553 ms_handle_reset on v2:10.45.128.141:3300/0 debug 2023-08-03T05:50:10.917+0000 7f8ea1b2c700 0 client.5194553 ms_handle_reset on v2:10.45.128.139:3300/0 Thank you, Anantha