Re: Upgrade from xen-4.1-testing to xen-unstable report

[Lin Ming <mlin@ss.pku.edu.cn>]

On Thu, 2012-04-12 at 07:08 +0000, Ian Campbell wrote:
> On Wed, 2012-04-11 at 22:23 +0100, Teck Choon Giam wrote:
> > Hi,
> > 
> > This is just my experience about issues I encountered when upgrade
> > from xen-4.1-testing changeset 23277:80130491806f to xen-unstable
> > changeset 25191:a95fc7decc83.
> > 
> > 1. Immediately after upgrade, xl list show such error:
> > 
> > # xl list
> > libxl: error: libxl.c:506:libxl_list_domain: geting domain info list:
> > Permission denied
> > libxl_domain_infolist failed.
> > 
> > After a reboot, it is fine.  Any idea why such behaviour?  Imagine if
> > there are running domUs... this might cause issues to shutdown?  I
> > will downgrade and repeat such test to confirm.  Might be worth a note
> > in upgrading note about this if this is intended?
> 
> The tools and the hypervisor are a matched pair so you would need to
> reboot the system in order to use the new tools. This has always been
> the case with Xen upgrades.
> 
> > 2. localtime setting not working.  Set to localtime=1 doesn't seems to
> > work whereby setting rtc_timeoffset works.  Any idea?
> 
> I've CC'd Lin Ming who implemented both of those.

Just did a quick gdb debug, seems libxl__domain_build_info_setdefault
was called 3 times. So below statement was executed 3 times too.

b_info->rtc_timeoffset += tm->tm_gmtoff;

Will look at this issue later.

(gdb) bt
#0  libxl__domain_build_info_setdefault (gc=0x7fffffffdc40, b_info=0x7fffffffdd90) at libxl_create.c:70
#1  0x00007ffff7991fd4 in libxl_domain_need_memory (ctx=0x626050, b_info=0x7fffffffdd90, need_memkb=0x7fffffffdc84) at libxl.c:2696
#2  0x000000000040b0ca in freemem (b_info=0x7fffffffdd90) at xl_cmdimpl.c:1399
#3  0x000000000040bd6d in create_domain (dom_info=0x7fffffffe040) at xl_cmdimpl.c:1656
#4  0x000000000041142c in main_create (argc=1, argv=0x7fffffffe638) at xl_cmdimpl.c:3446
#5  0x00000000004069d8 in main (argc=2, argv=0x7fffffffe630) at xl.c:165
(gdb) 

(gdb) bt
#0  libxl__domain_build_info_setdefault (gc=0x7fffffffdc70, b_info=0x7fffffffdd90) at libxl_create.c:70
#1  0x00007ffff799739c in do_domain_create (gc=0x7fffffffdc70, d_config=0x7fffffffdd50, cb=0, priv=0x7fffffffdd34, domid_out=0x625dc8, restore_fd=-1)
    at libxl_create.c:571
#2  0x00007ffff7997cdd in libxl_domain_create_new (ctx=0x626050, d_config=0x7fffffffdd50, cb=0, priv=0x7fffffffdd34, domid=0x625dc8) at libxl_create.c:738
#3  0x000000000040be4a in create_domain (dom_info=0x7fffffffe040) at xl_cmdimpl.c:1679
#4  0x000000000041142c in main_create (argc=1, argv=0x7fffffffe638) at xl_cmdimpl.c:3446
#5  0x00000000004069d8 in main (argc=2, argv=0x7fffffffe630) at xl.c:165
(gdb)

(gdb) bt
#0  libxl__domain_build_info_setdefault (gc=0x7fffffffdaa0, b_info=0x7fffffffdd90) at libxl_create.c:70
#1  0x00007ffff79b2146 in libxl_run_bootloader (ctx=0x626050, info=0x7fffffffdd90, disk=0x626b20, domid=9) at libxl_bootloader.c:349
#2  0x00007ffff7997464 in do_domain_create (gc=0x7fffffffdc70, d_config=0x7fffffffdd50, cb=0, priv=0x7fffffffdd34, domid_out=0x625dc8, restore_fd=-1)
    at libxl_create.c:580
#3  0x00007ffff7997cdd in libxl_domain_create_new (ctx=0x626050, d_config=0x7fffffffdd50, cb=0, priv=0x7fffffffdd34, domid=0x625dc8) at libxl_create.c:738
#4  0x000000000040be4a in create_domain (dom_info=0x7fffffffe040) at xl_cmdimpl.c:1679
#5  0x000000000041142c in main_create (argc=1, argv=0x7fffffffe638) at xl_cmdimpl.c:3446
#6  0x00000000004069d8 in main (argc=2, argv=0x7fffffffe630) at xl.c:165
(gdb)