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5be12f8459
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11 Commits

Author SHA1 Message Date
Rafal Wojtczuk
5be12f8459 qmemman: switch off memory balancing when doing xm save 
Apparently, it interferes:
INFO (XendCheckpoint:417) ERROR Internal error: Could not get vcpu context
INFO (XendCheckpoint:417) ERROR Internal error: Failed to map/save the p2m frame list
 2010-09-07 16:00:14 +02:00
Rafal Wojtczuk
11abef3439 qmemman: xc.domain_set_target_mem can throw exceptions, too 2010-09-07 13:10:48 +02:00
Rafal Wojtczuk
22df517425 qmemman: detect domain list change by watching /vm, not /local/domain 
The latter triggers on every memory/meminfo key update, which needlessly
adds xenstore requests.
 2010-09-06 10:46:36 +02:00
Rafal Wojtczuk
7dcb7cb196 qmemman: don't use xenapi, use hypercalls to do mem-set 2010-09-03 16:19:48 +02:00
Rafal Wojtczuk
10408d61db qmemman: when low on memory, do not make a VM go below prefmem 
Now the balance() has two different cases: enough memory and low_on_memory.
In the former, distribute memory proportianally; in the former, dont do this, as this
makes a VM go below prefmem.
 2010-09-01 12:40:02 +02:00
Rafal Wojtczuk
80771763cf qmemman: limit total memory transfer, not each one 2010-09-01 10:39:39 +02:00
Rafal Wojtczuk
c66e0848f3 qmemman: limit domain memory to 2G to workaround for xen xml-rpc limitation 
File "/usr/lib64/python2.6/xmlrpclib.py", line 710, in dump_int
    raise OverflowError, "int exceeds XML-RPC limits"
OverflowError: int exceeds XML-RPC limits
How crappy.
 2010-08-31 16:19:01 +02:00
Rafal Wojtczuk
de2619fbed qmemman: wrap xenapi.memset within try/except 
It can fail e.g. when a domain is being shutdown with a pretty
message like
 File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py", line 1322, in setMemoryTarget
    (target * 1024))
Error: (1, 'Operation not permitted')
 2010-08-31 15:53:24 +02:00
Rafal Wojtczuk
eb6755e93c qmemman: fix locking 
We want balance() to wait on a lock even after balloon() has finished,
until socket client has closed.
 2010-08-30 14:50:48 +02:00
Rafal Wojtczuk
2eba4c1c15 I will test before commit. I will test before commit. I will... 2010-08-30 12:01:42 +02:00
Rafal Wojtczuk
62487c0f1e Memory management across VMs, first release 2010-08-30 11:40:19 +02:00