(I think John knows the answer, but sending to ceph-users for archival purposes)
Hi John, A Ceph cluster lost a PG with CephFS metadata in there and it is currently doing a CephFS disaster recovery as described here: http://docs.ceph.com/docs/master/cephfs/disaster-recovery/ This data pool has 1.4B objects and currently has 16 concurrent scan_extents scans running: # cephfs-data-scan --debug-rados=10 scan_extents --worker_n 0 --worker_m 16 cephfs_metadata # cephfs-data-scan --debug-rados=10 scan_extents --worker_n 1 --worker_m 16 cephfs_metadata .. .. # cephfs-data-scan --debug-rados=10 scan_extents --worker_n 15 --worker_m 16 cephfs_metadata According to the source in DataScan.cc: * worker_n: Worker number * worker_m: Worker count So with the commands above I have 16 workers running, correct? For the scan_inodes I want to scale out to 32 workers to speed up the process even more. Just to double-check before I send a new PR to update the docs, this is the right way to run the tool, correct? If not, before sending the PR and starting scan_inodes on this cluster, what is the correct way to invoke the tool? Thanks! Wido _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
