-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 I'm trying to understand the real world reliability of Ceph to provide some data to our upper management and may be valuable to others investigating Ceph. Things I'm trying to understand: 1. How many clusters are in production? 2. How long has the cluster(s) been in production? 3. The size of the cluster(s) (# OSDs TB of raw disk space). 4. Has there been a data loss event? 5. Has there been a data near-loss event (some manual process was required to recover some or all of the cluster data, but not from backup as that would be considered a loss event)? 6. How much data was involved in loss/near-loss event? 7. How long to recover to cluster to performing all I/O (not necessarily healthy). 8. What was the root cause of the loss/near-loss event? >From what I've read on the mailing lists, it seems that most data loss event are around a design decisions to have 2 or less copies and experiencing multiple drive issues. Others seem to be related to human error, and I'm only aware of one instance where an upgrade caused a data availability issue. If you would take a few minutes to send me this information, I can summarize the findings and report back to the list. Thank you, - ---------------- Robert LeBlanc GPG Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 -----BEGIN PGP SIGNATURE----- Version: Mailvelope v0.13.1 Comment: https://www.mailvelope.com wsFcBAEBCAAQBQJVpUQtCRDmVDuy+mK58QAA3d8P/3tSSFXInMDLde9IZFfE jNjbN4zudF+ikNgBlOXFcU6vRIJyxj3V7Od+6PehLjyadmz+9Ju7KajRPb4z gdoAF6cqmWvu+urJ8AZ4Av0wdK6xRpWA3Dmz9VcdPOGOBztKB8ZC1L3htqty ysns5jgyzrFWPfWRGM0A/OC2r0JeAn2xDazZ3y2Gfhpi9sT7YqrqZj17MfdV S3MXNoHoVZFRSgS9jXJ0C1f1DKjR+kaoED3k+mJiiV/sR+RjK5OQi7tvU96L lWWPcOM02HJlfO//4cKXIqb4cs/p30y+VG4bh74c+svw5rq7SSAe0BFALZJY p9TyFUGQjp8BjA7ZwyT7UmqBPbwAbGRwToGOup9T2ZHbUW66vRyGPQcdVj7M z8PQDQWOg3AOaAgNXYNgwjTvfa5JwHHqIBhtTL8Kzt8ITteUr3N0sWNfydo6 h33sbhmv/SHmwFa267ounDj3M+MsVJq48iaHaZ+xznzYAsxfGQ0+Hv9nJxhB +KQWYCJTJcSXPDe7Ct3eHExYcO88I1mXqxuCdimk1DfNH0IieiUUYurLFTzy YvkJzbFaYNh/eccf7ASvt2ZjjGlrVozOijIopesaOJbJZP+Bd8FdGwc2IZXM ofkxbEBP96gpsatlSTlk1jEzTSiq+odgp9PJ2KjqgqYO6S4rNMKKgxnUsbjz IAJR =MGc9 -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
