[Xen-bugs] [Bug 1635] New: Unable to set memory-dynamic-max higher than value memory-dynamic-max at boot time

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1635

           Summary: Unable to set memory-dynamic-max  higher than value
                    memory-dynamic-max at boot time
           Product: Xen
           Version: unspecified
          Platform: x86
        OS/Version: Linux-2.6
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Cloud Xen
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: shuklin@xxxxxxxxxxx


(Tested on XCP 0.5 and XCP 0.11)

if we set memory-dynamic-max lower than static-dynamic-max and reboot (or boot
from halted state), real memory for guest PV machine can be changed within
range [dynamic-min ... value of memory-dynamic-max at boot time], but not
higher.

In numbers:

xe vm=test set-memory-limits-set static-min=128MiB dynamic-min=128MiB
dynamic-max=512MiB static-max=1024MiB

If we boot machine, we can change dynamic-max within range [128-1024MiB], but
at really memory changed within range [128-512]. If we set dynamic-max to some
value higher than 512 (f.e. 640), real memory target will be 512. But if we
reboot machine, we gain range (128-640). And if we lower value to (f.e.)
250MiB, after reboot we can get only 128-250Mib, not higher....


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