[master 4/7] Create cached LVs before non-cached LVs

vpodzime installerbot-noreply at redhat.com
Fri Jul 31 11:45:06 UTC 2015


From: Vratislav Podzimek <vpodzime at redhat.com>

In order to minimize the risk of non-cached LVs taking space on fast PVs that
should be used by caches.
---
 blivet/deviceaction.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/blivet/deviceaction.py b/blivet/deviceaction.py
index 4fd6df2..41b8289 100644
--- a/blivet/deviceaction.py
+++ b/blivet/deviceaction.py
@@ -26,7 +26,7 @@
 from . import udev
 from .util import get_current_entropy
 from .devices import StorageDevice
-from .devices import PartitionDevice
+from .devices import PartitionDevice, LVMLogicalVolumeDevice
 from .formats import getFormat, luks
 from parted import partitionFlag, PARTITION_LBA
 from .i18n import _, N_
@@ -334,6 +334,14 @@ def requires(self, action):
             otherNum = action.device.partedPartition.number
             if selfNum > otherNum:
                 rc = True
+        elif (action.isCreate and action.isDevice and
+              isinstance(self.device, LVMLogicalVolumeDevice) and
+              isinstance(action.device, LVMLogicalVolumeDevice) and
+              self.device.vg == action.device.vg):
+            # create cached LVs before non-cached LVs so that fast cache space
+            # is not taken by non-cached LVs
+            if not self.device.cached and action.device.cached:
+                rc = True
         elif (action.isAdd and action.container == self.container):
             rc = True
 


-- 
To view this commit on github, visit https://github.com/rhinstaller/blivet/commit/f0d9bf82b91d5c32580780a9a977cccff1e8a765


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