Problem with detach a disk from domU

Problem with detach a disk from domU

[Roberto Scudeller]

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Hi all,

I try to attach and detach a disk in a DomU, but It don't work.

See:
# xl create teste/teste4/teste4.cfg
Parsing config file teste/teste4/teste4.cfg
xc: info: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->00000000001797f0
  TOTAL:         0000000000000000->000000001f800000
  ENTRY ADDRESS: 0000000000100000
xc: info: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000000fb
  1GB PAGES: 0x0000000000000000
Daemon running with PID 17445
# xl block-attach teste4
tap:vhd:/storage6_nfs/default/roberto/stress/teste/teste4/xvdb.vhd xvdb w
# xl block-list teste4
Vdev  BE  handle state evt-ch ring-ref BE-path
768   0   2      4     6      8        /local/domain/0/backend/vbd/2/768
51712 0   2      4     7      9        /local/domain/0/backend/vbd/2/51712
51728 0   2      4     9      295      /local/domain/0/backend/vbd/2/51728
# xl block-detach teste4 51728
# xl block-list teste4
Vdev  BE  handle state evt-ch ring-ref BE-path
768   0   2      4     6      8        /local/domain/0/backend/vbd/2/768
51712 0   2      4     7      9        /local/domain/0/backend/vbd/2/51712
51728 0   2      4     9      295      /local/domain/0/backend/vbd/2/51728

Inside a teste4 DomU found a new disk and these is don't mounted on VM, only
listed on fdisk and /dev/.

I try this patch:
http://marc.info/?l=xen-devel&m=131066210526755

I found in
http://xen.1045712.n5.nabble.com/hanging-tapdisk2-processes-and-improper-udev-rules-td4622364.html

When I try recompile xen with:
# make
...
gcc  -O2 -fomit-frame-pointer -m64 -fno-strict-aliasing -std=gnu99 -Wall
-Wstrict-prototypes -Wno-unused-value -Wdeclaration-after-statement
-D__XEN_TOOLS__ -MMD -MF .libxl_device.o.d  -D_LARGEFILE_SOURCE
-D_LARGEFILE64_SOURCE  -Werror -Wno-format-zero-length
-Wmissing-declarations -I. -fPIC -I../../tools/libxc -I../../tools/include
-I../../tools/libxc -I../../tools/include -I../../tools/xenstore
-I../../tools/include -I../../tools/blktap2/control
-I../../tools/blktap2/include -I../../tools/include -c -o libxl_device.o
libxl_device.c
libxl_device.c: In function ‘libxl__device_destroy’:
libxl_device.c:253: error: incompatible type for argument 1 of
‘libxl__device_destroy_tapdisk’
libxl_device.c:274: error: incompatible type for argument 1 of
‘libxl__device_destroy_tapdisk’
make[3]: *** [libxl_device.o] Error 1
make[3]: Leaving directory `/root/xen4/xen-4.1-testing.hg/tools/libxl'
make[2]: *** [subdir-install-libxl] Error 2
make[2]: Leaving directory `/root/xen4/xen-4.1-testing.hg/tools'
make[1]: *** [subdirs-install] Error 2
make[1]: Leaving directory `/root/xen4/xen-4.1-testing.hg/tools'
make: *** [install-tools] Error 2

My versions are: Xen 4.1.2-rc1-pre and kernel 2.6.32.45. I download via hg
clone and git pull today.

Any ideas?
This patch is complete?


Best regards,

-- 
Roberto Scudeller

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