[Bug 586134] Re: SC: Maximum number of loop devices should be configurable

[Chris Cheney]

My removal errors are probably related to 517086, but the creation error
appears to be new according to C de-Avillez, it is failing at vgcreate,
example follows:

12:32:54 DEBUG [SystemUtil:pool-10-thread-4] Running command: ///usr/lib/eucalyptus/euca_rootwrap dd if=/dev/zero of=//var/lib/eucalyptus/volumes/vol-613B0677 count=1 bs=1M seek=1027 
12:32:54  INFO [ServiceSinkHandler:ReplyQueue.10] :1275931974448:eucalyptus:uid:admin:cb7fa02b-1b7c-4f2a-807d-f171acfa1876:MSG_SERVICED:CreateVolumeResponseType:165:
12:32:54 DEBUG [SystemUtil:pool-10-thread-5] Running command: ///usr/lib/eucalyptus/euca_rootwrap vgcreate vg-sGXOSQ.. /dev/loop92 
12:32:54 DEBUG [SystemUtil:pool-10-thread-4] Running command: ///usr/lib/eucalyptus/euca_rootwrap losetup -f 
12:32:54  INFO [LVM2Manager:pool-10-thread-4] losetup /dev/loop93 //var/lib/eucalyptus/volumes/vol-613B0677
12:32:54  INFO [LVM2Manager:pool-10-thread-4] 
12:32:54  INFO [LVM2Manager:pool-10-thread-4] 
12:32:54 DEBUG [SystemUtil:pool-10-thread-4] Running command: ///usr/lib/eucalyptus/euca_rootwrap pvcreate /dev/loop93 
12:32:54  INFO [AOEManager:pool-10-thread-2] Trying e5.7
12:32:54 DEBUG [SystemUtil:pool-10-thread-4] Running command: ///usr/lib/eucalyptus/euca_rootwrap vgcreate vg-6E6tMQ.. /dev/loop93 
12:32:54  INFO [AOEManager:pool-10-thread-1] Trying e5.8
12:32:54  INFO [BlockStorageStatistics:pool-10-thread-3] Service: StorageController Version: 1.6.2 Volumes: 86 Space Used: 91268055040
12:32:54  INFO [BlockStorageStatistics:pool-10-thread-3] Service: StorageController Version: 1.6.2 Volumes: 86 Space Used: 92341796864
12:32:54  INFO [ServiceSinkHandler:ReplyQueue.10] :1275931974956:eucalyptus:uid:admin:60f67a28-1c90-4c26-9a93-0426f5e83f85:MSG_SERVICED:CreateVolumeResponseType:50:
12:32:54 DEBUG [SystemUtil:pool-10-thread-3] Running command: ///usr/lib/eucalyptus/euca_rootwrap dd if=/dev/zero of=//var/lib/eucalyptus/volumes/vol-58B20615 count=1 bs=1M seek=1027 
12:32:54 ERROR [SystemUtil:pool-10-thread-4] com.eucalyptus.util.ExecutionException: ///usr/lib/eucalyptus/euca_rootwrap vgcreate vg-6E6tMQ.. /dev/loop93 
com.eucalyptus.util.ExecutionException: ///usr/lib/eucalyptus/euca_rootwrap vgcreate vg-6E6tMQ.. /dev/loop93 
        at edu.ucsb.eucalyptus.util.SystemUtil.run(SystemUtil.java:91)
        at edu.ucsb.eucalyptus.storage.LVM2Manager.createVolumeGroup(LVM2Manager.java:170)
        at edu.ucsb.eucalyptus.storage.LVM2Manager.createLogicalVolume(LVM2Manager.java:390)
        at edu.ucsb.eucalyptus.storage.LVM2Manager.createVolume(LVM2Manager.java:435)
        at edu.ucsb.eucalyptus.cloud.ws.BlockStorage$VolumeCreator.run(BlockStorage.java:789)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:636)
12:32:54 ERROR [BlockStorage:pool-10-thread-4] com.eucalyptus.util.EucalyptusCloudException: Unable to create volume group vg-6E6tMQ.. for /dev/loop93

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SC: Maximum number of loop devices should be configurable
https://bugs.launchpad.net/bugs/586134
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