diff options
Diffstat (limited to 'Documentation/filesystems/pohmelfs/info.txt')
-rw-r--r-- | Documentation/filesystems/pohmelfs/info.txt | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/Documentation/filesystems/pohmelfs/info.txt b/Documentation/filesystems/pohmelfs/info.txt index 4e3d50157083..db2e41393626 100644 --- a/Documentation/filesystems/pohmelfs/info.txt +++ b/Documentation/filesystems/pohmelfs/info.txt | |||
@@ -1,6 +1,8 @@ | |||
1 | POHMELFS usage information. | 1 | POHMELFS usage information. |
2 | 2 | ||
3 | Mount options: | 3 | Mount options. |
4 | All but index, number of crypto threads and maximum IO size can changed via remount. | ||
5 | |||
4 | idx=%u | 6 | idx=%u |
5 | Each mountpoint is associated with a special index via this option. | 7 | Each mountpoint is associated with a special index via this option. |
6 | Administrator can add or remove servers from the given index, so all mounts, | 8 | Administrator can add or remove servers from the given index, so all mounts, |
@@ -52,16 +54,27 @@ mcache_timeout=%u | |||
52 | 54 | ||
53 | Usage examples. | 55 | Usage examples. |
54 | 56 | ||
55 | Add (or remove if it already exists) server server1.net:1025 into the working set with index $idx | 57 | Add server server1.net:1025 into the working set with index $idx |
56 | with appropriate hash algorithm and key file and cipher algorithm, mode and key file: | 58 | with appropriate hash algorithm and key file and cipher algorithm, mode and key file: |
57 | $cfg -a server1.net -p 1025 -i $idx -K $hash_key -k $cipher_key | 59 | $cfg A add -a server1.net -p 1025 -i $idx -K $hash_key -k $cipher_key |
58 | 60 | ||
59 | Mount filesystem with given index $idx to /mnt mountpoint. | 61 | Mount filesystem with given index $idx to /mnt mountpoint. |
60 | Client will connect to all servers specified in the working set via previous command: | 62 | Client will connect to all servers specified in the working set via previous command: |
61 | mount -t pohmel -o idx=$idx q /mnt | 63 | mount -t pohmel -o idx=$idx q /mnt |
62 | 64 | ||
63 | One can add or remove servers from working set after mounting too. | 65 | Change permissions to read-only (-I 1 option, '-I 2' - write-only, 3 - rw): |
66 | $cfg A modify -a server1.net -p 1025 -i $idx -I 1 | ||
67 | |||
68 | Change IO priority to 123 (node with the highest priority gets read requests). | ||
69 | $cfg A modify -a server1.net -p 1025 -i $idx -P 123 | ||
64 | 70 | ||
71 | One can check currect status of all connections in the mountstats file: | ||
72 | # cat /proc/$PID/mountstats | ||
73 | ... | ||
74 | device none mounted on /mnt with fstype pohmel | ||
75 | idx addr(:port) socket_type protocol active priority permissions | ||
76 | 0 server1.net:1026 1 6 1 250 1 | ||
77 | 0 server2.net:1025 1 6 1 123 3 | ||
65 | 78 | ||
66 | Server installation. | 79 | Server installation. |
67 | 80 | ||