On Tue, 2015-10-13 at 09:18 +0800, 高强 wrote: > Hi,alls > > I'm modifying the source code of xen-4.4.1. Specifically, I'm modifying > the memory copy part of snapshot. I first put all memory pages to write > protection, and then rewrite the write protection exception part of the > code. After capture the exception then save the memory page , and all > memory page copy is complete, call the function xenaccess_teardown(xch, > xenaccess), but there is a mistake: > > libxl: error: libxl_utils.c:396:libxl_read_exactly: file/stream truncated > reading ipc msg header from domain 3 save/restore helper stdout pipe > libxl: error: libxl_exec.c:129:libxl_report_child_exitstatus: domain 3 > save/restore helper [-1] died due to fatal signal Segmentation fault > (core dumped) > Failed to save domain, resuming domain > > Has anyone ever meet this kind of problem, and who can tell me the cause > of the error.
Without knowing exactly what you have changed, probably not. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
