Table F.1 Resident processes in GFS and the necessity of monitoring themNumber | Process name | CMD column of
"ps -ef" output | Number of startups | Startup condition | Necessity of monitoring | Reason for necessity of monitoring |
|---|
1 | sfcfrmd | sfcfrmd | 1 | This process starts when the GFS Shared File System is used (the node configuration information of GFS is registered). | Unnecessary | This process is live monitored by sfcprmd.
If this process terminates abnormally, the node is down immediately for data protection. |
2 | sfcprmd | /usr/lib/fs/sfcfs/sfcprmd | 1 | This process always starts. | Unnecessary | This process is live monitored by sfcpncd.
If this process terminates abnormally, the node is down immediately for data protection. |
3 | sfcfsd | sfcfsd -f fsid
(*1) | 1 to 10
(*3) | This process starts when the GFS Shared File System is mounted and stops when the GFS Shared File System is unmounted. | Unnecessary | This process is live monitored by sfcprmd.
If this process terminates abnormally, the node is down immediately for data protection. |
4 | sfchnsd | /usr/lib/fs/sfcfs/sfchnsd | 1 | This process always starts. | Unnecessary | This process is live monitored by sfcfrmd.
If this process terminates abnormally, the node is down immediately for data protection. |
5 | sfcpncd | /usr/lib/fs/sfcfs/sfcpncd | 1 | This process always starts. | Necessary | This process is not live monitored by GFS.
If this process is stopped, the process sfcprmd that is monitored by this process cannot be live monitored. For this reason, this process must be monitored.
If the stop of this process is detected, collect troubleshooting information then contact field engineers. |
6 | sfcfsmg | sfcfsmg -x -y -f fsid -p special mount_point
(*2) | 1 to 10
(*3) | This process starts when the GFS Shared File System is mounted and stops when the GFS Shared File System is unmounted. | Unnecessary | This process is live monitored by sfcprmd.
If this process terminates abnormally, it is restarted.
However, if this process is operating as the primary MDS, the file system is blockaded. |
GFS : Global File Services
*1) fsid : The file system ID
*2) x : "P" or "S"
y : "r" or "w"
fsid : The file system ID
special : The path name of the block special file
mount_point : The path to the mount point
*3) The number of the GFS Shared File Systems mounted
