PRIMECLUSTER Global File Services Configuration and Administration Guide 4.1 (Linux)

B.2.5 sfcinfo(8) Display partition information

<SYNOPSIS>

sfcinfo [-V] [-n] {block_special|mount_point} [{block_special|mount_point}...]

sfcinfo [-V] [-n] -d dev[,dev,...]

sfcinfo -a [-V][-n]

sfcinfo -c {block_special|mount_point} [{block_special|mount_point}...]

sfcinfo -c [-a]

sfcinfo -e {block_special|mount_point}

sfcinfo -e [-a]

<DESCRIPTION>

sfcinfo displays the partition information and the MDS (metadata server) placing information of the GFS Shared File System specified by block_special or mount_point.

block_special indicates the partition configuring the file system by a block special device name.

mount_point indicates the path to the mount point of the file system. To use the path to the mount point, the file system must already be described in /etc/fstab.

If neither block_special nor mount_point is specified and the -a option is omitted, sfcinfo displays the information on all GFS Shared File Systems being mounted in the command execution node.

The GFS Shared File System retains information on the partition configuring the file system. sfcinfo outputs the following detailed information.

[Partition information]

• FS identification number
• Special device name (device number)
• Partition size (in kilobytes)
• Usage of partitions
  (META: meta-data area | DATA: file data area | LOG: update log area)
• Mount point in a command execution node
  "-----" when no file system is mounted

[Node information]

• FS identification number
• Host ID
• Start status (RUN or STOP)
• Node name

[MDS placing information]

• Special device name of the representative partition
• Node names of the placing MDS (meta-data server)
• Whether MDS is placed on all nodes

<OPTIONS>

The following options can be specified:

-V

Displays the version of the GFS Shared File System.

-a

Displays the information for all file systems described in the file system configure information in a management partition.

-c

Displays the node names of placing MDS (meta-data server).

-d dev[,dev,...]

Specifies a device number in hexadecimal for the partition to be displayed.

Use a comma delimiter to specify multiple device numbers.

-e

Displays file system variables set by sfcadm(8).

-n

Displays node information.

If no parameters are specified, the information for all mounted file systems is displayed.

<OPERAND>

The following operand can be specified:

mount_point|block_special

Specifies a block special device on the partition configuring the file system or the path to the mount point of the file system. Use a space delimiter to specify multiple block special devices or paths.

<EXAMPLES>

# sfcinfo /dev/sfdsk/gfs/dsk/volume1
/dev/sfdsk/gfs/dsk/volume1:
FSID special                                   size  Type  mount
   1 /dev/sfdsk/gfs/dsk/volume1(e721)        711874  META  /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)         51200  LOG   /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)       6578704  DATA  /mnt
 
# sfcinfo -V /dev/sfdsk/gfs/dsk/volume1
sfcfs v1.0 file system
/dev/sfdsk/gfs/dsk/volume1:
FSID special                                   size  Type  mount
   1 /dev/sfdsk/gfs/dsk/volume1(e721)        711874  META  /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)         51200  LOG   /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)       6578704  DATA  /mnt
 
# sfcinfo /mnt
/dev/sfdsk/gfs/dsk/volume1:
FSID special                                   size  Type  mount
   1 /dev/sfdsk/gfs/dsk/volume1(e721)        711874  META  /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)         51200  LOG   /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)       6578704  DATA  /mnt
 
# sfcinfo -d e701
/dev/sfdsk/gfs/dsk/volume1:
FSID special                                   size  Type  mount
   1 /dev/sfdsk/gfs/dsk/volume1(e721)        711874  META  /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)         51200  LOG   /mnt
   1 /dev/sfdsk/gfs/dsk/volume1(e721)       6578704  DATA  /mnt
 
# sfcinfo -n /dev/sfdsk/gfs/dsk/volume1
/dev/sfdsk/gfs/dsk/volume1:
FSID  hostID    status  hostname
   1  80000000  RUN     prime01
   2  80000001  STOP    prime02
# sfcinfo -a 
/dev/sfdsk/gfs/dsk/volume1:
FSID special                                   size  Type  mount
   1 /dev/sfdsk/gfs/dsk/volume1(e721)        711874  META  -----
   1 /dev/sfdsk/gfs/dsk/volume1(e721)         51200  LOG   -----
   1 /dev/sfdsk/gfs/dsk/volume1(e721)       6578704  DATA  -----
 
/dev/sfdsk/gfs/dsk/volume2:
FSID special                                   size  Type  mount
   2 /dev/sfdsk/gfs/dsk/volume2(e722)         25418  META  /mnt2
   2 /dev/sfdsk/gfs/dsk/volume2(e722)          5120  LOG   /mnt2
   2 /dev/sfdsk/gfs/dsk/volume2(e722)        232256  DATA  /mnt2

Example of displaying the MDS placing information:

# sfcinfo -c /dev/sfdsk/gfs/dsk/volume1
/dev/sfdsk/gfs/dsk/volume1:
node=node1,node2,node3,node4
mdsnode=all
 
# sfcinfo -c /dev/sfdsk/gfs/dsk/volume2
/dev/sfdsk/gfs/dsk/volume2:
node=node1,node2,node3 

<FILES>

/etc/mtab

Mounted file system table

/etc/fstab

List of default parameters for each file system

<SEA ALSO>

sfcadm(8)

fstab(5) in the online manual.