4 viewing information in the /proc file system, Viewing information in the /proc file system -26, Figure 4-5 sho – HP StorageWorks Scalable File Share User Manual
Page 82
Viewing system information
4–26
Figure 4-5
A graph showing the information in the
ost-blkD.cfg
file
4.7.4 Viewing information in the /proc file system
The following information is gathered and stored in the
/proc
file system:
•
SCSI disk statistics —
/proc/scsi/sd_iostats
•
Read size distribution
•
Write size distribution
•
CCISS disk statistics —
/proc/driver/cciss/cciss_iostats/
•
Read size distribution
•
Write size distribution
•
Time distribution of read and write I/O requests
•
OST block statistics —
/proc/fs/lustre/obdfilter/
•
Read size distribution
•
Write size distribution
Note the following points:
•
Information about disks on EVA4000 arrays is stored in the
/proc/scsi/sd_iostats
directory.
•
Information about disks on SFS20 storage arrays is stored in the
/proc/driver/cciss/
cciss_iostats/
directory
•
Information about the local disk on each HP SFS server (usually named
c0d0
) is stored in the
/proc/driver/cciss/cciss_iostats/
directory. This information is not relevant to the
performance of the file systems.