Re: [Xen-devel] [PATCH 10/11] tmem: fixup 2010 cleanup patch that breaks tmem save/restore

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 07.09.12 at 12:50, "zhenzhong.duan" <zhenzhong.duan@xxxxxxxxxx> wrote:
> With this patch applied, 'xm save' worked, restore failed. See below:
> [root@sustaining13 OVM_OL5U7_X86_64_PVM_10GB]# xm list
> Name ID Mem VCPUs State Time(s)
> Domain-0 0 537 2 r----- 255.3
> OVM_OL5U7_X86_64_PVM_10GB 1 1024 2 -b---- 76.2
> [root@sustaining13 OVM_OL5U7_X86_64_PVM_10GB]# xm save 1 delete
> [root@sustaining13 OVM_OL5U7_X86_64_PVM_10GB]#
> [root@sustaining13 OVM_OL5U7_X86_64_PVM_10GB]# xm restore delete
> Error: /usr/lib64/xen/bin/xc_restore 4 2 1 2 0 0 0 0 failed
> Usage: xm restore <CheckpointFile> [-p]
> 
> Restore a domain from a saved state.
> -p, --paused Do not unpause domain after restoring it
> [root@sustaining13 OVM_OL5U7_X86_64_PVM_10GB]# xm dmesg:
> (XEN) tmem.c:2037:d0 tmem: all pools frozen for all domains
> (XEN) tmem.c:2037:d0 tmem: all pools thawed for all domains
> (XEN) tmem.c:2037:d0 tmem: all pools frozen for all domains
> (XEN) tmem.c:2037:d0 tmem: all pools thawed for all domains
> (XEN) tmem.c:1220:d1 tmem: initializing tmem capability for 
> domid=1...<G><2>tmem.c:1256:d1 ok
> (XEN) tmem.c:1912:d1 tmem: allocating ephemeral-private tmem pool for 
> domid=1...<G><2>tmem.c:2014:d1 pool_id=0
> (XEN) tmem.c:1912:d1 tmem: allocating ephemeral-private tmem pool for 
> domid=1...<G><2>tmem.c:2014:d1 pool_id=1
> (XEN) tmem.c:1912:d1 tmem: allocating persistent-private tmem pool for 
> domid=1...<G><2>tmem.c:2014:d1 pool_id=2
> (XEN) tmem.c:2855:d0 tmem: flushing tmem pools for domid=1
> (XEN) tmem.c:1197:d0 destroying ephemeral-private tmem pool 
> <G><2>tmem.c:1198:d0 domid=1 pool_id=0
> (XEN) tmem.c:1197:d0 destroying ephemeral-private tmem pool 
> <G><2>tmem.c:1198:d0 domid=1 pool_id=1
> (XEN) tmem.c:1197:d0 destroying persistent-private tmem pool 
> <G><2>tmem.c:1198:d0 domid=1 pool_id=2
> (XEN) tmem.c:2037:d0 tmem: all pools frozen for all domains
> (XEN) tmem.c:2037:d0 tmem: all pools thawed for all domains
> (XEN) tmem.c:2037:d0 tmem: all pools frozen for all domains
> (XEN) tmem.c:2037:d0 tmem: all pools thawed for all domains
> (XEN) tmem.c:1220:d0 tmem: initializing tmem capability for 
> domid=2...<G><2>tmem.c:1256:d0 ok
> (XEN) tmem.c:2268:d0 tmem: weight set to 0 for domid=2
> (XEN) tmem.c:2274:d0 tmem: cap set to 0 for domid=2
> (XEN) tmem.c:1912:d0 tmem: allocating ephemeral-private tmem pool for 
> domid=2...<G><2>tmem.c:1915:d0 failed... unsupported spec version

Looks like Dan's patches to bump the tmem ABI from 0 to 1
(22136:b7f0ea22880d, 22137:fd2e5008c2e0 ) failed to fully
update tools/libxc/xc_tmem.c (xc_tmem_restore_new_pool()
in particular for the problem above).

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel