On 03/10/2016 06:03 AM, David Disseldorp wrote: > Hi Mike, > > On Thu, 10 Mar 2016 00:34:32 -0600, Mike Christie wrote: > >> This adds support for a new op cmpext. The request will read >> extent.length bytes and compare them to extent.length bytes at >> extent.offset on disk. If there is a miscompare the osd will return >> -EILSEQ, and the mismatched buffer that was read. >> >> rbd will use this in a multi op request to implement the >> SCSI COMPARE_AND_WRITE request which is used by VMware for >> its atomic test and set request. >> >> v2: >> - Merge David's tracing fixes. >> - Instead of returning the mismatch offset and buffer on matching >> failure just return the buffer. The client can figure out the offset >> if it needs it. > > What's your reason for dropping the mismatch offset? I was not sure if anyone else was going to use it. I can add it back. It does not matter to me. -- 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
