Red Hat GLOBAL FILE SYSTEM 4.7 Guía de usuario descargar pdf (Pagina 100)

Troubleshooting7–4

• The interconnect may not be functioning correctly.

If all of the MDS and OST services associated with the file system are available and the client node

has been configured correctly but is still failing to mount or unmount a file system, ensure that the

interconnect that the client node is using to communicate with the servers is functioning correctly.

If none of the above considerations provides a solution to the failure of the mount or unmount operation,

reboot the client node. Rebooting the node unmounts all mounted Lustre file systems. If the failed operation

was a mount operation, you can attempt to mount the file system again when the server has rebooted.

7.2.2 The sfsmount command reports device or resource busy

When a Myrinet interconnect is used to connect the client nodes to the HP SFS system, Lustre uses

GM port 4 on the client nodes. If there is a GM/MPICH application running on the client node, the MPICH

software may use GM port 4, and the client node will not be able to mount the Lustre file system. When this

problem occurs, a message similar to the following is displayed:

# sfsmount delta/deltaone

sfsmount: mount error 32.

mount.lustre: mount(0xdd48fa1c@gm0,0xdd48faaa@gm0:/delta-mds1/client_gm,

/mnt/deltaone) failed: No such device

mds nid 0: 0xdd48fa1c@gm

mds nid 1: 0xdd48faaa@gm

mds name: delta-mds1

profile: client_gm

options: rw,acl,user_xattr

Are the lustre modules loaded?

Check /etc/modules.conf and /proc/filesystems

To determine the exact source of the error, examine the dsmeg file on the client node, by entering the

following command:

# dmesg | grep -v "Unknown symbol"

GM: NOTICE: li/jointfilesconvert/261981/bgm/gm_open.c:312:_gm_open():kernel

GM: Could not open port state in kernel.

LustreError: 13304:0:(gmlnd_api.c:172:gmnal_startup()) Can't open GM port 4: 5

(busy)

LustreError: Error -5 starting up LNI gm

LustreError: 13304:0:(events.c:621:ptlrpc_init_portals()) network

initialisation failed

You can verify that port 4 is in use on the client by entering the following command:

# /opt/gm/bin/gm_board_info|grep -i busy

0: BUSY 3230 (this process [gm_board_info])

1: BUSY 2125

2: BUSY 2815

4: BUSY 2822 !!port 4 is busy here

5: BUSY 2823

6: BUSY 2836

You can prevent this problem from occurring by configuring Lustre to use a different port on the client, as

described here. To change the configuration, you must edit the /etc/modules.conf file on all of the

client nodes using the Myrinet interconnect, and on all of the servers in the HP SFS system. You must also

change the RAM disk image on the HP SFS Object Storage Servers so that the change will not be lost when

a server is next booted.

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 133 134

Comentarios a estos manuales

Sin comentarios

Red Hat GLOBAL FILE SYSTEM 4.7 Guía de usuario Pagina 100

Comentarios a estos manuales

Relacionado con productos y manuales para Manuales de software Red Hat GLOBAL FILE SYSTEM 4.7