On Fri, Nov 13, 2015 at 8:31 AM, Artie Ziff <artie.ziff@xxxxxxxxx> wrote: > Greetings Ceph Users everywhere! > > I was hoping to locate an entry for this Ceph configuration setting: > ms_crc_header > Would it be here: > http://docs.ceph.com/docs/master/rados/configuration/ms-ref/ > Or perhaps it is deprecated? > I have searched Google but I am not satisfied. ;) > > Does the "ms crc header" setting affect the behavior in the last field in > this struct? ("CRC of header") > > // From src/include/msgr.h > struct ceph_msg_header { > u64le seq; // Sequence number. > u64le tid; // Transaction ID. > u16le type; // Message type (CEPH_MSG_* or MSG_*). > u16le priority; // Priority (higher is more important). > u16le version; // Version of message encoding. > > u32le front_len; // The size of the front section. > u32le middle_len; // The size of the middle section. > u32le data_len; // The size of the data section. > u16le data_off; // The way data should be aligned by the reciever. > > ceph_entity_name src; // Information about the sender. > > u16le compat_version; // Oldest compatible encoding version. > u16le reserved; // Unused. > u32le crc; // CRC of header. > } > > Regardless, setting it false appears to be causing my Ceph build to > misbehave. > (reader got bad header crc) > Is that worth further investigation? > Or just set it to true and carry on? I think we expect to enable header crc at least. If you want to disable it, you need to make all osd/client to disable it. > > On the historic interwebs I find numerous posts of Ceph configs with > ms_crc_header set to false. These days is false a recommended setting? > > Thanks much! > az > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Best Regards, Wheat _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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