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19 Cards in this Set
- Front
- Back
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what retransmission rate is considered high?
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a retransmission rate of 5 percent is considered high.
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NFS daemons can be started by what fastpath?
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smitty mknfs
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What is the nfsstat
command? |
the nfsstat
command determines whether you are dropping packets. |
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Mount
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The act of a client accessing the file systems that a server
exports. |
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which commands can be used to determine if the client or server is retransmitting
large blocks. Retransmissions are always a possibility due to lost packets or busy servers. |
the nfsstat -c and nfsstat -s commands to determine if the client or server is retransmitting
large blocks. |
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how does mount work?
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From the /usr/sbin/rpc.mountd daemon on the server and
the /usr/sbin/mount command on the client. The mountd daemon is a Remote Procedure Call (RPC) that answers a client request to mount a file system. The mountd daemon finds out which file systems are available by reading the /etc/xtab file. In addition, the mountd daemon provides a list of currently mounted file systems and the clients on which they are mounted. |
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what is the procedure for changing an exported nfs directory with a text editor?
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1. unexport it:
exportfs -u /dirname 2. edit /etc/exports file 3. make changes 4. re-export: exportfs /dirname |
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an NFS server is stateless, what does this mean?
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an NFS server does not have to remember
any transaction information about its clients. |
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how can you access a list of a servers exported file systems?
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showmount -e host_name
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how is remote file access accomplished?
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From the /usr/sbin/nfsd daemon on the server and the
/usr/sbin/biod daemon on the client. Handles client requests for files. The biod daemon runs on all NFS client systems. When a user on a client wants to read or write to a file on a server, the biod daemon sends this request to the server. |
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what is the rpcinfo command used for?
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Reports the status of Remote Procedure Call (RPC) servers.
helps identify services such as mountd, portmap, etc. |
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fastpath for NFS export?
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smitty mknfsexp
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what is the procedure for changing and exported nfs directory in smit?
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1. unexport it:
exportfs -u /dirname 2. smitty chnfsexp 3. make changes 4. re-export: exportfs /dirname |
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Export
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The act of making file systems available to remote clients.
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what command will start the NFS daemons immediately?
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mknfs -N
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what file is edited to create NFS mounts via text editor?
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/etc/exports
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what are the 3 types of NFS mounts?
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Predefined, explicit, and automatic.
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fastpath for unexporting NFS
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smitty rmnfsexp
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what command is entered to attain the current status of all NFS daemons?
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lssrc -g nfs
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