Hi When a domain is started with option vtpm = [ ''instance=1, backend=0'' ] vtpm for the domain always starts with parameter "clear", resulting in all keystore inaccessable because the previous SRK is lost. I could not find a way to save the vtpm state in any way. The vtpm_manager output includes these: TPMD[1]: tpm/tpm_startup.c:45: Info: TPM_Startup(1) Loading NVM. Sending LoadNVM command ERROR[VTPM]: Failed to load NVM .INFO[VTPM]: [VTPM Listener]: VTPM Listener waiting for messages. Reading LoadNVM header when I checked the code and mailing lists, this NVM is actually resides in dom0 filesystem, namely /var/vtpm/vtpm_dm_%d.data but the vtpm_manager does not create this when it started, nor it complains. I am having this issue with xen versions 3.1.3-RELEASE and 3.1-testing, but did not test with 3.2 branch. I will also attach the vtpm_manager output. I appologize for the cross-post. Thank you. Erdem Bayer _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel