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Cause:
Storage domains require directIO support from backing store to function.
CIFS does not support directIO
Consequence:
Storage domains cannot be created on CIFS
Result:
CIFS is not supported
Created attachment 658831[details]
logs
Description of problem:
we fail to create a cifs posix data domain because we use dd with directio to read the meta data in the created domain and the kernel does not support directio.
Version-Release number of selected component (if applicable):
vdsm-4.9.6-44.1.el6_3.x86_64
2.6.32-279.14.1.el6.x86_64
si24.5
How reproducible:
100%
Steps to Reproduce:
1. try to create a posix cifs domain
2.
3.
in path put:
//<win ip>/dirname/dirname
in VFS put: cifc
in mount options put:
uid=36,gid=36,username=<XXXX>,password=<XXXXX>
Actual results:
we fail to create the domain because vdsm tried to read the metadata with directio while kernel does not support it.
Expected results:
vdsm should read metadat without directio if kernel does not support it.
Additional info:logs
Created attachment 658831 [details] logs Description of problem: we fail to create a cifs posix data domain because we use dd with directio to read the meta data in the created domain and the kernel does not support directio. Version-Release number of selected component (if applicable): vdsm-4.9.6-44.1.el6_3.x86_64 2.6.32-279.14.1.el6.x86_64 si24.5 How reproducible: 100% Steps to Reproduce: 1. try to create a posix cifs domain 2. 3. in path put: //<win ip>/dirname/dirname in VFS put: cifc in mount options put: uid=36,gid=36,username=<XXXX>,password=<XXXXX> Actual results: we fail to create the domain because vdsm tried to read the metadata with directio while kernel does not support it. Expected results: vdsm should read metadat without directio if kernel does not support it. Additional info:logs