Re: [Engine-devel] shared fs support

On Tue, Dec 13, 2011 at 02:57:33PM -0500, Saggi Mizrahi wrote: > On Sun 11 Dec 2011 10:15:23 AM EST, Andrew Cathrow wrote: >> >> >> ----- Original Message ----- >>> From: "Saggi Mizrahi"<smizrahi(a)redhat.com> >>> To: "VDSM Project Development"<vdsm-devel(a)lists.fedorahosted.org>, engine-devel(a)ovirt.org >>> Sent: Friday, December 9, 2011 5:41:42 PM >>> Subject: [Engine-devel] shared fs support >>> >>> >>> Hi, I have preliminary (WIP) patches for shared FS up on gerrit. >>> There is a lot of work to be done reorganizing the patches but I >>> just wanted all the TLV guys to have a chance to look at it on >>> Sunday. >>> >>> I did some testing and should work as expected for most cases. >>> >>> To test just connectStorageServer with storageType=6 (sharedfs) >>> connection params are >>> {'id'=1, >>> 'spec'='server:/export' >>> 'vfs_type'='nfs\gluster\smb' >>> 'mnt_options'='opt,opt=3,opt' } >>> >>> to check with an existing NFS domain you can just >>> spec=server:/export >>> vfs_type=nfs >>> mnt_options=soft,timeo=600,retrans=6,nosharecache,vers=3 >> >> So does that mean that we treat nfs custom types differently -eg using the out or process stuff? >> >> >>> >>> I only tested NFS but I am going to test more exotic stuff on Monday. >>> >>> This is the patch to build the RPM from. >>> http://gerrit.ovirt.org/#change,560 >>> >>> Have a good weekend >>> >>> _______________________________________________ >>> Engine-devel mailing list >>> Engine-devel(a)ovirt.org >>> http://lists.ovirt.org/mailman/listinfo/engine-devel >>> > > Using the custom NFS will give you the tested supported options and > limits. Using sharedfs will give you a generic implementation. > Currently the underlying implementation is the same. But there is a > plan to use a simpler implementation (without using OOP as it's an NFS > specific hack) and also loose stale handle checks and other NFS > specific stuff. Without a proof to the contraty, I would suspect that other shared file system would have the tendency to disappear, leaving client application in D state. We may need the oop hack for them, too.