xen-devel
Re: [Xen-devel] how does variable num define for errno in libxc
Thank you
and man errno ,there is no match or map between num,say 104 and
consist ,say EBADMSG, or maybe some book more helpful
another question
i am confused about how to use shadow mechanism ,that is, when live
migration, after shutdown VM,and XEN_DOMCTL_SHADOW_OP_CLEAN, how to make VM
remain in shadow mode XEN_DOMCTL_SHADOW_OP_ENABLE_LOGDIRTY? i have
modified the code to try to make it as follows
if ( !(xc_shadow_control(xc_handle, dom,
XEN_DOMCTL_SHADOW_OP_OFF,
NULL, 0, NULL, 0, NULL) >= 0 &&
xc_shadow_control(xc_handle, dom,
XEN_DOMCTL_SHADOW_OP_ENABLE_LOGDIRTY,
NULL, 0, NULL, 0, NULL) >= 0) )
but it seems not to work , and how to do it ,or any help
Thanks
Daniel Stodden 写道:
On Wed, 2008年03月19日 at 11:48 +0800, tgh wrote:
hi
i try to modify code of xc_domain_save.c
and there is error, comes out from ERROR("Error when writing to state
file (5)" " (errno %d)", errno);
i am confused about where is the errno defined ,and what does variable
num mean? say errno=104 or errno=26 or some else
Error numbers are a C library feature. If you're running Linux, check
whether you have installed the base development manual pages and try
'man errno'. Or see a good book on C programming.
good luck,
Daniel
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