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Re: What vzctl --features nfs:on ... do? [message #32711 is a reply to message #32624] Mon, 25 August 2008 11:38 Go to previous messageGo to previous message
maratrus is currently offline  maratrus
Messages: 1495
Registered: August 2007
Location: Moscow
Senior Member
Hi,

each process has a "struct ve_struct" associated with it (current->ve_task_info.exec_env), this struct contains different information about the VE for example it contains veid field. It also contains "__u64 features" field - it is responsible for the VE features.
When any VE starts the appropriate ve_struct is created.

So, when you set "nfs feature:on" vzctl put appropriate string inside VEID.conf file and when you start your VE this information goes to features field of the "struct ve_struct".

During the mount process inside VE nfs_get_sb function if called. It checks that VE_FEATURE_NFS must be set (if (!ve_is_super(ve) && !(get_exec_env()->features & VE_FEATURE_NFS))) otherwise it returns -ENODEV. So, to be able to mount nfs inside VE we have to set nfs feature for this VE.

Quote:


ps. does VE has nfs4 client support?



Unfortunately, not yet.
 
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