Re: balloon manipulation within a domU?

To: port-xen%netbsd.org@localhost
Subject: Re: balloon manipulation within a domU?
From: "Aaron J. Grier" <agrier%poofygoof.com@localhost>
Date: 2012年7月27日 13:52:46 -0700

On Thu, Jul 26, 2012 at 11:12:25AM +0100, Cherry G. Mathew wrote:
> On 24 July 2012 07:33, Aaron J. Grier <agrier%poofygoof.com@localhost> wrote:
> > manipulating a NetBSD domU's memory seems to work fine with "xl
> > mem-set", but trying to manipulate this within the domU with "sysctl
> > -w machdep.xen.balloon.target=XXXX" yields "error 13, couldn't write
> > xenbus target node".
> 
> Could you post what
> # xenstore-ls
> 
> says from the dom0 ?
> There should be an entry for memory/target
there is such an entry, and I can change the target from the dom0 side.
I've attached the full output.
> > is there something I need to enable in my xen configuration to allow
> > a domU to do its own balloon requests?
the problem seems to be that the domU cannot write its own memory /
target entry.
thanks for looking at this. hopefully it's something simple.
-- 
 Aaron J. Grier | "Not your ordinary poofy goof." | 
agrier%poofygoof.com@localhost

tool = ""
 xenstored = ""
local = ""
 pool = ""
 0 = ""
 other_config = ""
 description = "Pool-0"
 uuid = "8e61052c-5226-deb1-5af3-7f6a04542768"
 name = "Pool-0"
 domain = ""
 0 = ""
 vm = "/vm/00000000-0000-0000-0000-000000000000"
 device = ""
 control = ""
 platform-feature-multiprocessor-suspend = "1"
 error = ""
 memory = ""
 target = "262144"
 guest = ""
 hvmpv = ""
 data = ""
 description = ""
 console = ""
 limit = "1048576"
 type = "xenconsoled"
 domid = "0"
 cpu = ""
 0 = ""
 availability = "online"
 name = "Domain-0"
 backend = ""
 vbd = ""
 1 = ""
 2 = ""
 3 = ""
 4 = ""
 5 = ""
 6 = ""
 7 = ""
 8 = ""
 9 = ""
 10 = ""
 11 = ""
 12 = ""
 14 = ""
 17 = ""
 18 = ""
 19 = ""
 20 = ""
 769 = ""
 frontend = "/local/domain/20/device/vbd/769"
 physical-device = "64"
 params = "/dev/wd4a"
 frontend-id = "20"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda1"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "83886080"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 770 = ""
 frontend = "/local/domain/20/device/vbd/770"
 physical-device = "65"
 params = "/dev/wd4b"
 frontend-id = "20"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda2"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "4194304"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 771 = ""
 frontend = "/local/domain/20/device/vbd/771"
 physical-device = "87"
 params = "/dev/wd5h"
 frontend-id = "20"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda3"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "348318384"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 21 = ""
 22 = ""
 769 = ""
 frontend = "/local/domain/22/device/vbd/769"
 physical-device = "80"
 params = "/dev/wd5a"
 frontend-id = "22"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda1"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "16777216"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 770 = ""
 frontend = "/local/domain/22/device/vbd/770"
 physical-device = "81"
 params = "/dev/wd5b"
 frontend-id = "22"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda2"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "16777216"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 771 = ""
 frontend = "/local/domain/22/device/vbd/771"
 physical-device = "84"
 params = "/dev/wd5e"
 frontend-id = "22"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda3"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "16777216"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 772 = ""
 frontend = "/local/domain/22/device/vbd/772"
 physical-device = "85"
 params = "/dev/wd5f"
 frontend-id = "22"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda4"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "16777216"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 773 = ""
 frontend = "/local/domain/22/device/vbd/773"
 physical-device = "86"
 params = "/dev/wd5g"
 frontend-id = "22"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda5"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "209715200"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 23 = ""
 25 = ""
 768 = ""
 frontend = "/local/domain/25/device/vbd/768"
 physical-device = "68"
 params = "/dev/wd4e"
 frontend-id = "25"
 online = "1"
 removable = "0"
 bootable = "1"
 state = "4"
 dev = "hda"
 type = "phy"
 mode = "w"
 hotplug-status = "connected"
 sectors = "68221104"
 info = "0"
 sector-size = "512"
 feature-flush-cache = "1"
 vif = ""
 1 = ""
 2 = ""
 3 = ""
 4 = ""
 5 = ""
 6 = ""
 7 = ""
 8 = ""
 9 = ""
 10 = ""
 11 = ""
 12 = ""
 14 = ""
 17 = ""
 18 = ""
 19 = ""
 20 = ""
 0 = ""
 frontend = "/local/domain/20/device/vif/0"
 frontend-id = "20"
 online = "1"
 state = "4"
 script = "/usr/pkg/etc/xen/scripts/vif-bridge"
 mac = "00:16:3e:6a:00:1d"
 bridge = "bridge0"
 handle = "0"
 vifname = "xvif20i0"
 feature-rx-copy = "1"
 feature-rx-flip = "1"
 hotplug-status = "connected"
 21 = ""
 22 = ""
 0 = ""
 frontend = "/local/domain/22/device/vif/0"
 frontend-id = "22"
 online = "1"
 state = "4"
 script = "/usr/pkg/etc/xen/scripts/vif-bridge"
 mac = "00:16:3e:6a:00:1e"
 bridge = "bridge0"
 handle = "0"
 vifname = "xvif22i0"
 feature-rx-copy = "1"
 feature-rx-flip = "1"
 hotplug-status = "connected"
 23 = ""
 25 = ""
 0 = ""
 frontend = "/local/domain/25/device/vif/0"
 frontend-id = "25"
 online = "1"
 state = "2"
 script = "/usr/pkg/etc/xen/scripts/vif-bridge"
 mac = "00:16:3e:6f:5d:dc"
 bridge = "bridge0"
 handle = "0"
 vifname = "xvif25i0"
 feature-rx-copy = "1"
 feature-rx-flip = "1"
 hotplug-status = "connected"
 console = ""
 1 = ""
 2 = ""
 3 = ""
 4 = ""
 5 = ""
 6 = ""
 7 = ""
 8 = ""
 9 = ""
 10 = ""
 11 = ""
 12 = ""
 14 = ""
 17 = ""
 18 = ""
 19 = ""
 20 = ""
 0 = ""
 domain = "milo"
 protocol = "vt100"
 uuid = "46bf08fe-62e4-1efa-b1a5-e73bdbefdfd8"
 frontend = "/local/domain/20/device/console/0"
 state = "1"
 location = "2"
 online = "1"
 frontend-id = "20"
 21 = ""
 22 = ""
 0 = ""
 domain = "theano"
 protocol = "vt100"
 uuid = "c8d05475-3b80-3099-f80f-b471390e9759"
 frontend = "/local/domain/22/device/console/0"
 state = "1"
 location = "2"
 online = "1"
 frontend-id = "22"
 23 = ""
 25 = ""
 0 = ""
 frontend = "/local/domain/25/console"
 frontend-id = "25"
 online = "1"
 state = "1"
 domain = "damo"
 protocol = "vt100"
 qdisk = ""
 23 = ""
 25 = ""
 5632 = ""
 frontend = "/local/domain/25/device/vbd/5632"
 params = "aio:/usr/pkg/lib/xen/images/xp_pro_sp1.iso"
 frontend-id = "25"
 online = "1"
 removable = "1"
 bootable = "1"
 state = "1"
 dev = "hdc"
 type = "tap"
 mode = "r"
 device-model = ""
 10 = ""
 disable_pf = "0"
 25 = ""
 disable_pf = "0"
 state = "running"
 20 = ""
 vm = "/vm/34e8738f-6ad1-e111-8f78-20cf30f44958"
 name = "milo"
 control = ""
 platform-feature-multiprocessor-suspend = "1"
 device = ""
 suspend = ""
 event-channel = ""
 vbd = ""
 769 = ""
 backend = "/local/domain/0/backend/vbd/20/769"
 backend-id = "0"
 state = "4"
 virtual-device = "769"
 device-type = "disk"
 ring-ref = "511"
 event-channel = "8"
 protocol = "x86_64-abi"
 770 = ""
 backend = "/local/domain/0/backend/vbd/20/770"
 backend-id = "0"
 state = "4"
 virtual-device = "770"
 device-type = "disk"
 ring-ref = "510"
 event-channel = "9"
 protocol = "x86_64-abi"
 771 = ""
 backend = "/local/domain/0/backend/vbd/20/771"
 backend-id = "0"
 state = "4"
 virtual-device = "771"
 device-type = "disk"
 ring-ref = "509"
 event-channel = "10"
 protocol = "x86_64-abi"
 vif = ""
 0 = ""
 backend = "/local/domain/0/backend/vif/20/0"
 backend-id = "0"
 state = "4"
 handle = "0"
 mac = "00:16:3e:6a:00:1d"
 vifname = "xennet0"
 tx-ring-ref = "508"
 rx-ring-ref = "507"
 request-rx-copy = "1"
 feature-rx-notify = "1"
 event-channel = "11"
 console = ""
 0 = ""
 state = "1"
 backend-id = "0"
 backend = "/local/domain/0/backend/console/20/0"
 data = ""
 cpu = ""
 0 = ""
 availability = "online"
 1 = ""
 availability = "online"
 memory = ""
 static-max = "2621440"
 target = "2621440"
 videoram = "0"
 error = ""
 drivers = ""
 attr = ""
 messages = ""
 domid = "20"
 store = ""
 port = "1"
 ring-ref = "1348254"
 console = ""
 backend = "/local/domain/0/backend/console/20/0"
 backend-id = "0"
 limit = "1048576"
 type = "xenconsoled"
 output = "pty"
 port = "2"
 ring-ref = "1348253"
 tty = "/dev/pts/2"
 device-misc = ""
 console = ""
 nextDeviceID = "1"
 22 = ""
 vm = "/vm/2855e49d-9fd7-e111-8f78-20cf30f44958"
 name = "theano"
 control = ""
 platform-feature-multiprocessor-suspend = "1"
 device = ""
 suspend = ""
 event-channel = ""
 vbd = ""
 769 = ""
 backend = "/local/domain/0/backend/vbd/22/769"
 backend-id = "0"
 state = "4"
 virtual-device = "769"
 device-type = "disk"
 ring-ref = "511"
 event-channel = "8"
 protocol = "x86_32-abi"
 770 = ""
 backend = "/local/domain/0/backend/vbd/22/770"
 backend-id = "0"
 state = "4"
 virtual-device = "770"
 device-type = "disk"
 ring-ref = "510"
 event-channel = "9"
 protocol = "x86_32-abi"
 771 = ""
 backend = "/local/domain/0/backend/vbd/22/771"
 backend-id = "0"
 state = "4"
 virtual-device = "771"
 device-type = "disk"
 ring-ref = "509"
 event-channel = "10"
 protocol = "x86_32-abi"
 772 = ""
 backend = "/local/domain/0/backend/vbd/22/772"
 backend-id = "0"
 state = "4"
 virtual-device = "772"
 device-type = "disk"
 ring-ref = "508"
 event-channel = "11"
 protocol = "x86_32-abi"
 773 = ""
 backend = "/local/domain/0/backend/vbd/22/773"
 backend-id = "0"
 state = "4"
 virtual-device = "773"
 device-type = "disk"
 ring-ref = "507"
 event-channel = "12"
 protocol = "x86_32-abi"
 vif = ""
 0 = ""
 backend = "/local/domain/0/backend/vif/22/0"
 backend-id = "0"
 state = "4"
 handle = "0"
 mac = "00:16:3e:6a:00:1e"
 vifname = "xennet0"
 tx-ring-ref = "506"
 rx-ring-ref = "505"
 request-rx-copy = "1"
 feature-rx-notify = "1"
 event-channel = "13"
 console = ""
 0 = ""
 state = "1"
 backend-id = "0"
 backend = "/local/domain/0/backend/console/22/0"
 data = ""
 cpu = ""
 0 = ""
 availability = "online"
 1 = ""
 availability = "online"
 memory = ""
 static-max = "2621440"
 target = "2621440"
 videoram = "0"
 error = ""
 drivers = ""
 attr = ""
 messages = ""
 domid = "22"
 store = ""
 port = "1"
 ring-ref = "2138063"
 console = ""
 backend = "/local/domain/0/backend/console/22/0"
 backend-id = "0"
 limit = "1048576"
 type = "xenconsoled"
 output = "pty"
 port = "2"
 ring-ref = "2138062"
 tty = "/dev/pts/6"
 device-misc = ""
 console = ""
 nextDeviceID = "1"
 25 = ""
 vm = "/vm/3649274a-aad7-e111-8f78-20cf30f44958"
 name = "damo"
 control = ""
 shutdown = ""
 platform-feature-multiprocessor-suspend = "1"
 device = ""
 suspend = ""
 event-channel = ""
 vbd = ""
 768 = ""
 backend = "/local/domain/0/backend/vbd/25/768"
 backend-id = "0"
 state = "1"
 virtual-device = "768"
 device-type = "disk"
 5632 = ""
 backend = "/local/domain/0/backend/qdisk/25/5632"
 backend-id = "0"
 state = "1"
 virtual-device = "5632"
 device-type = "cdrom"
 vif = ""
 0 = ""
 backend = "/local/domain/0/backend/vif/25/0"
 backend-id = "0"
 state = "1"
 handle = "0"
 mac = "00:16:3e:6f:5d:dc"
 data = ""
 cpu = ""
 0 = ""
 availability = "online"
 1 = ""
 availability = "online"
 memory = ""
 static-max = "2097152"
 target = "2088960"
 videoram = "8192"
 error = ""
 drivers = ""
 attr = ""
 messages = ""
 domid = "25"
 store = ""
 port = "3"
 ring-ref = "1044476"
 console = ""
 backend = "/local/domain/0/backend/console/25/0"
 backend-id = "0"
 limit = "1048576"
 type = "xenconsoled"
 output = "pty"
 port = "4"
 ring-ref = "1044479"
 tty = "/dev/pts/7"
 vnc-port = "5900"
 vnc-listen = "127.0.0.1"
 image = ""
 device-model-pid = "2012"
vm = ""
 00000000-0000-0000-0000-000000000000 = ""
 on_xend_stop = "ignore"
 pool_name = "Pool-0"
 shadow_memory = "0"
 uuid = "00000000-0000-0000-0000-000000000000"
 on_reboot = "restart"
 image = "(linux (kernel '') (superpages 0) (nomigrate 0) (tsc_mode 0))"
 ostype = "linux"
 kernel = ""
 cmdline = ""
 ramdisk = ""
 on_poweroff = "destroy"
 bootloader_args = ""
 on_xend_start = "ignore"
 on_crash = "restart"
 xend = ""
 restart_count = "0"
 vcpus = "1"
 vcpu_avail = "1"
 bootloader = ""
 name = "Domain-0"
 34e8738f-6ad1-e111-8f78-20cf30f44958 = ""
 uuid = "34e8738f-6ad1-e111-8f78-20cf30f44958"
 name = "milo"
 pool_name = "Pool-0"
 image = ""
 ostype = "linux"
 kernel = ""
 cmdline = ""
 ramdisk = ""
 start_time = "1342679141.49"
 memory = "2560"
 device = ""
 console = ""
 0 = ""
 frontend = "/local/domain/20/device/console/0"
 frontend-id = "20"
 backend-id = "0"
 backend = "/local/domain/0/backend/console/20/0"
 2855e49d-9fd7-e111-8f78-20cf30f44958 = ""
 uuid = "2855e49d-9fd7-e111-8f78-20cf30f44958"
 name = "theano"
 pool_name = "Pool-0"
 image = ""
 ostype = "linux"
 kernel = ""
 cmdline = ""
 ramdisk = ""
 start_time = "1343361636.58"
 device = ""
 console = ""
 0 = ""
 frontend = "/local/domain/22/device/console/0"
 frontend-id = "22"
 backend-id = "0"
 backend = "/local/domain/0/backend/console/22/0"
 3649274a-aad7-e111-8f78-20cf30f44958 = ""
 uuid = "3649274a-aad7-e111-8f78-20cf30f44958"
 name = "damo"
 pool_name = "Pool-0"
 rtc = ""
 timeoffset = ""
 image = ""
 ostype = "linux"
 kernel = ""
 cmdline = ""
 ramdisk = ""
 start_time = "1343366433.81"

Follow-Ups:
- Re: balloon manipulation within a domU?
  - From: Cherry G. Mathew

References:
- balloon manipulation within a domU?
  - From: Aaron J. Grier
- Re: balloon manipulation within a domU?
  - From: Cherry G. Mathew

Prev by Date: Re: balloon manipulation within a domU?
Next by Date: Re: balloon manipulation within a domU?
Previous by Thread: Re: balloon manipulation within a domU?
Next by Thread: Re: balloon manipulation within a domU?
Indexes:

Home | Main Index | Thread Index | Old Index