Hi all, I have been triyng to use RBD devices on a Erasure Coded data-pool on Ubuntu Xenial.
I created my block device "blockec2" with : rbd create blockec2 --size 300G --data-pool ecpool --image-feature layering,data-pool (same issue with "rbd create blockec2 --size 300G --data-pool ecpool" ) I maped this block device to a "4.4.0-65-generic #86-Ubuntu SMP Thu Feb 23 17:49:58 UTC 2017 x86_64" Kernel using "rbd-nbd map rbd/blockec2" Wenn using the block device (mkfs.ext4 for example), i get following errors in dmesg: [Fri Mar 3 10:05:25 2017] nbd: registered device at major 43 [Fri Mar 3 10:05:53 2017] block nbd0: Other side returned error (95) [Fri Mar 3 10:05:53 2017] blk_update_request: I/O error, dev nbd0, sector 0 [Fri Mar 3 10:05:56 2017] block nbd0: Other side returned error (95) [Fri Mar 3 10:05:56 2017] blk_update_request: I/O error, dev nbd0, sector 8388607 [Fri Mar 3 10:06:06 2017] block nbd0: Other side returned error (95) [Fri Mar 3 10:06:06 2017] blk_update_request: I/O error, dev nbd0, sector 16777214 I tested with 2 versions of ceph, same issue : rbd-nbd -v : ceph version 12.0.0 (b7d9d6eb542e2b946ac778bd3a381ce466f60f6a) ceph version 11.2.0 (f223e27eeb35991352ebc1f67423d4ebc252adb7) The ceph cluster is running ceph version 11.2.0 (f223e27eeb35991352ebc1f67423d4ebc252adb7) with bluestore OSDs. Am I doing something wrong ? Is the kernel of my RBD client "too old" ? Should I open a ticket/bug report ? Thanks ! François Blondel
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