I am not able to do a dd test on the SSDs since it's not mounted as filesystem, but dd on the OSD (non-SSD) drives gives normal result.
Since you have free space on the SSDs, you could add a 3rd 10G partition to one of the SSDs. Then you could put a filesystem on that partition, or just dd the third partition directly with dd if=/dev/zero of=/dev/sdf3 bs=... count=...
Be careful not to make a typo. of=/dev/sdf or of=/dev/sdf2 would destroy your other journals.
What does the manufacturer claim for the SSD performance specs? -- Craig _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
