Am Dienstag, den 07.03.2017, 11:14 +0100 schrieb Ilya Dryomov: On Tue, Mar 7, 2017 at 10:27 AM, Francois Blondel <fblondel at intelliad.de<mailto:fblondel at intelliad.de>> wrote: 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 Be aware that this functionality is experimental and may eat your data. If you still want to try it, you need to whitelist it in ceph.conf: enable experimental unrecoverable data corrupting features = debug_white_box_testing_ec_overwrites and do $ ceph osd pool set ecpool debug_white_box_testing_ec_overwrites true Thanks a lot, it works [:-)] Had to force it with --yes-i-really-mean-it : ceph osd pool set ecpool debug_white_box_testing_ec_overwrites true --yes-i-really-mean-it Thanks, Fran?ois Thanks, Ilya -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20170307/6389f345/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: face-smile.png Type: image/png Size: 1057 bytes Desc: face-smile.png URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20170307/6389f345/attachment.png>
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