Mounting from an Amazon EC2 instance

You can mount your cache from an Amazon EC2 instance.

To mount your cache from Amazon EC2

1. Connect to your Amazon EC2 instance.

2. Make a directory on your cache for the mount point with the following command.

   $ sudo mkdir -p /mnt

3. Mount the cache to the directory that you created. Use the following command and replace the following items:

   • Replace cache_dns_name with the actual file cache's DNS name.

   • Replace mountname with the cache's mount name. This mount name is returned in the CreateFileCache API operation response. It's also returned in the response of the describe-file-caches AWS CLI command, and the DescribeFileCaches API operation.

   sudo mount -t lustre -o relatime,flock cache_dns_name@tcp:/mountname /mnt

   This command mounts your cache with these options:

   • relatime – Maintains atime (inode access times) data, but not for each time that a file is accessed. With this option enabled, atime data is written to disk only if the file has been modified since the atime data was last updated (mtime), or if the file was last accessed more than a certain amount of time ago (one day by default). relatime is required for automatic cache eviction to work properly.

   • flock –Enables file locking for your cache. If you don't want file locking enabled, use the mount command without flock.

4. Verify that the mount command was successful by listing the contents of the directory to which you mounted the cache, /mnt by using the following command.

   $ ls /mnt
   import-path  lustre
   $ 

   You can also use the df command.

   $ df
   Filesystem                    1K-blocks    Used  Available Use% Mounted on
   devtmpfs                        1001808       0    1001808   0% /dev
   tmpfs                           1019760       0    1019760   0% /dev/shm
   tmpfs                           1019760     392    1019368   1% /run
   tmpfs                           1019760       0    1019760   0% /sys/fs/cgroup
   /dev/xvda1                      8376300 1263180    7113120  16% /
   123.456.789.0@tcp:/mountname 3547698816   13824 3547678848   1% /mnt
   tmpfs                            203956       0     203956   0% /run/user/1000
   

   The results show Amazon File Cache mounted on /mnt.