Hi, I noticed that writing to RBD image using kernel driver while it's snapshot is being created causes I/O errors and the filesystem (reiserfs) eventually aborts and remounts itself in read-only mode: [192507.327359] end_request: I/O error, dev rbd7, sector 818528 [192507.331510] end_request: I/O error, dev rbd7, sector 819200 [192507.348478] end_request: I/O error, dev rbd7, sector 408 [192507.352647] REISERFS abort (device rbd7): Journal write error in flush_commit_list Is this happening by design or is it a bug? I know that I should freeze the filesystem before attempting to create a snapshot but these I/O errors seem unnecessary to me. If it's really impossible to write to an image while it's snapshot is being created couldn't write requests be blocked until snapshotting completes? I'm using ceph 0.56.6 and kernel 3.4.48. -- Karol Jurak -- 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
