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[Xen-devel] host halts upon shutdown of 126000mb domains

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Subject: [Xen-devel] host halts upon shutdown of 126000mb domains
From: "Krysan, Susan" <KRYSANS@xxxxxxxxxx>
Date: Wed, 30 May 2007 18:18:45 -0400
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Thread-topic: host halts upon shutdown of 126000mb domains

The host server halts upon shutdown of 126000mb domU (64-bit SLES10).  It booted fine and was able to run kernbench.  However, during shutdown the host crashes.  Host is Unisys ES7000 host with 32 processors and 128gb memory using x86_64 SLES10 with xen-unstable c/s 15080.


Reducing the memory allocation for the domU to 124000mb works fine.  My guess is that specifying 126000 does not leave enough memory for the hypervisor to do its required work at shutdown, so shouldn’t the domU get a message that there is not enough memory and not boot?


Config file is:


kernel = "/boot/vmlinuz-xen"

ramdisk = "/boot/initrd-xen"

disk = [ 'file:/mnt/xenlsg/xenimages/domu//sles10gm-test3.img,sda,w' ]

root = "/dev/sda2 ro"

name = "sles10gm-test_32x126gb-dom101"

vcpus = 32

memory = 126000



vif = [ "ip=" ]


Serial Console shows:


xenbr0: port 2(peth0) entering disabled state

xenbr0: port 1(vif0.0) entering disabled state

md: stopping all md devices.


Taking down system, will halt

Synchronizing SCSI cache for disk sda:

ACPI: PCI interrupt for device 0000:10:01.1 disabled

ACPI: PCI interrupt for device 0000:10:01.0 disabled

System halted.

(XEN) Domain 0 halted: halting machine.


Cat /proc/meminfo done inside the domU shows:


MemTotal:     129024172 kB

MemFree:      126367044 kB

Buffers:         15972 kB

Cached:          84492 kB

SwapCached:          0 kB

Active:          64004 kB

Inactive:        61876 kB

HighTotal:           0 kB

HighFree:            0 kB

LowTotal:     129024172 kB

LowFree:      126367044 kB

SwapTotal:           0 kB

SwapFree:            0 kB

Dirty:               8 kB

Writeback:           0 kB

AnonPages:       25008 kB

Mapped:          13172 kB

Slab:            21296 kB

PageTables:       1048 kB

NFS_Unstable:        0 kB

Bounce:              0 kB

CommitLimit:  64512084 kB

Committed_AS:   101568 kB

VmallocTotal: 34359738367 kB

VmallocUsed:      1520 kB

VmallocChunk: 34359736847 kB



Sue Krysan

Linux Systems Group

Unisys Corporation



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