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xen-users
[Xen-users] Can't destroy zombie domain, holding onto resources
Hi,
On restarting one of my domains, it went into zombie state and
failed to restart. Now I see it like this:
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 256 1 r----- 1088916.2
Zombie-test1 111 128 1 ---s-d 195171.2
Issuing "xm shutdown 111" or "xm destroy 111" immediately returns to
command prompt with no action seemingly being taken.
The "test1" domain cannot be started again, giving the "hotplug
scripts not working" error.
LVm believes that the domain's root and swap block devices are still
in use. "ifconfig" and "ip link" show the domain's vif as still
being present, though it is not currently part of xenbr0.
I can see multiple instances of the domain's vbds and vif if I use
xenstore-ls:
$ sudo xenstore-ls | less
[...]
local = ""
domain = ""
[...]
111 = ""
2049 = ""
domain = "test1"
frontend = "/local/domain/111/device/vbd/2049"
dev = "sda1"
state = "4"
params = "mainvg/domu_test1_root"
mode = "w"
frontend-id = "111"
type = "phy"
physical-device = "fd:15"
hotplug-status = "connected"
sectors = "31457280"
info = "0"
sector-size = "512"
2050 = ""
domain = "test1"
frontend = "/local/domain/111/device/vbd/2050"
dev = "sda2"
state = "4"
params = "mainvg/domu_test1_swap"
mode = "w"
frontend-id = "111"
type = "phy"
physical-device = "fd:14"
hotplug-status = "connected"
sectors = "524288"
info = "0"
sector-size = "512"
160 = ""
2049 = ""
domain = "test1"
frontend = "/local/domain/160/device/vbd/2049"
dev = "sda1"
state = "1"
params = "mainvg/domu_test1_root"
mode = "w"
frontend-id = "160"
type = "phy"
2050 = ""
domain = "test1"
frontend = "/local/domain/160/device/vbd/2050"
dev = "sda2"
state = "1"
params = "mainvg/domu_test1_swap"
mode = "w"
frontend-id = "160"
type = "phy"
161 = ""
2049 = ""
domain = "test1"
frontend = "/local/domain/161/device/vbd/2049"
dev = "sda1"
state = "1"
params = "mainvg/domu_test1_root"
mode = "w"
frontend-id = "161"
type = "phy"
2050 = ""
domain = "test1"
frontend = "/local/domain/161/device/vbd/2050"
dev = "sda2"
state = "1"
params = "mainvg/domu_test1_swap"
mode = "w"
frontend-id = "161"
type = "phy"
162 = ""
2049 = ""
domain = "test1"
frontend = "/local/domain/162/device/vbd/2049"
dev = "sda1"
state = "1"
params = "mainvg/domu_test1_root"
mode = "w"
frontend-id = "162"
type = "phy"
2050 = ""
domain = "test1"
frontend = "/local/domain/162/device/vbd/2050"
dev = "sda2"
state = "1"
params = "mainvg/domu_test1_swap"
mode = "w"
frontend-id = "162"
type = "phy"
163 = ""
2049 = ""
domain = "test1"
frontend = "/local/domain/163/device/vbd/2049"
dev = "sda1"
state = "1"
params = "mainvg/domu_test1_root"
mode = "w"
frontend-id = "163"
type = "phy"
2050 = ""
domain = "test1"
frontend = "/local/domain/163/device/vbd/2050"
dev = "sda2"
state = "1"
params = "mainvg/domu_test1_swap"
mode = "w"
frontend-id = "163"
type = "phy"
164 = ""
2049 = ""
domain = "test1"
frontend = "/local/domain/164/device/vbd/2049"
dev = "sda1"
state = "1"
params = "mainvg/domu_test1_root"
mode = "w"
frontend-id = "164"
type = "phy"
2050 = ""
domain = "test1"
frontend = "/local/domain/164/device/vbd/2050"
dev = "sda2"
state = "1"
params = "mainvg/domu_test1_swap"
mode = "w"
frontend-id = "164"
type = "phy"
[...]
vif = ""
[...]
111 = ""
0 = ""
bridge = "xenbr0"
domain = "test1"
handle = "0"
script = "/etc/xen/scripts/vif-bridge"
state = "4"
frontend = "/local/domain/111/device/vif/0"
mac = "00:16:3e:00:67:fc"
vifname = "v-test1"
frontend-id = "111"
hotplug-status = "connected"
160 = ""
0 = ""
bridge = "xenbr0"
domain = "test1"
handle = "0"
script = "/etc/xen/scripts/vif-bridge"
state = "5"
frontend = "/local/domain/160/device/vif/0"
mac = "00:16:3e:00:67:fc"
vifname = "v-test1"
frontend-id = "160"
161 = ""
0 = ""
bridge = "xenbr0"
domain = "test1"
handle = "0"
script = "/etc/xen/scripts/vif-bridge"
state = "5"
frontend = "/local/domain/161/device/vif/0"
mac = "00:16:3e:00:67:fc"
vifname = "v-test1"
frontend-id = "161"
162 = ""
0 = ""
bridge = "xenbr0"
domain = "test1"
handle = "0"
script = "/etc/xen/scripts/vif-bridge"
state = "5"
frontend = "/local/domain/162/device/vif/0"
mac = "00:16:3e:00:67:fc"
vifname = "v-test1"
frontend-id = "162"
163 = ""
0 = ""
bridge = "xenbr0"
domain = "test1"
handle = "0"
script = "/etc/xen/scripts/vif-bridge"
state = "5"
frontend = "/local/domain/163/device/vif/0"
mac = "00:16:3e:00:67:fc"
vifname = "v-test1"
frontend-id = "163"
164 = ""
0 = ""
bridge = "xenbr0"
domain = "test1"
handle = "0"
script = "/etc/xen/scripts/vif-bridge"
state = "5"
frontend = "/local/domain/164/device/vif/0"
mac = "00:16:3e:00:67:fc"
vifname = "v-test1"
frontend-id = "164"
This is xen 3.0.2-3 on debian sarge from sarge backports.
Anyone have any ideas how to destroy this domain and free up the
resources it has a hold on, without rebooting dom0?
Cheers,
Andy
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