HP StorageWorks Scalable File Share User Manual

Page 65

Viewing file system information

4–9

To see more information on a file system, enter the

show filesystem

command for the file system, as

shown in the following example:

sfs> show filesystem data

Name: data
OSTs: ost[10-15]
State: started
Mountpoint: /usr/data/
Stripe Size: 4194304
Stripe Count: 6
Interconnect: tcp elan
MDS mount options: acl,user_xattr
OST mount options: extents
Lustre timeout: 200
Quota options: quotaon=ug

MDS Information:

Name LUN Array Controller Files Used Service State Running on
----- --- ----- ---------- -------- ---- ------------- ----------
mds3 15 AB 2.3M 20% running south2

OST Information:

Name LUN Array Controller Size(GB) Used Service State Running on
----- --- ----- ---------- -------- ---- ------------- ----------
ost10 8 2 A 290 30% running south3
ost11 9 2 B 290 31% running south3
ost13 10 3 A 290 29% running south3
ost12 11 3 A 290 30% running south4
ost15 13 4 A 290 31% running south5
ost14 14 4 B 290 34% running south5

sfs>

The output shows details of the file system configuration, including stripe size, stripe count, interconnect,

mount options, Lustre timeout value, and details of the LUNs (both MDS and OST LUNs) that are used by

the file system.

Note that the first interconnect that is listed in the

Interconnect

field is the interconnect that is used by

the MDS service for communication with the OST services in the file system. This interconnect must be

functioning correctly between the administration and MDS servers and the Object Storage Servers; if it is

not, the MDS service cannot function correctly.

The LUN information includes the following details:

Name

The name of the MDS or OST service.

LUN

The LUN used to store the data associated with the meta-data (MDS) or file

contents (OST) of the file system.

Array

The storage array where the LUN is located.

Controller

For EVA4000 storage: the controller to which the LUN is preferred in the

EVA4000 array. If this is a mirrored service, then for EVA4000 arrays, the field

shows the EVA4000 controllers used by the underlying LUNs. Hence this

normally has the value

. A value of

indicates that there is a

problem, because the two components of a mirrored LUN must not use the

same controller.
For SFS20 storage: the SCSI controller through which the array and LUN are

accessed. If this is a mirrored service, the field always shows two dashes (

Files

The total number of files that can be created in the file system; that is, the total

number of files that can be described by the meta-data stored in the MDS

service.