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05545c92db
This patch implements tape statistics in the st module via sysfs. Current no statistics are available for tape I/O and there is no easy way to reuse the block layer statistics for tape as tape is a character device and does not have perform I/O in sector sized chunks (the size of the data written to tape can change). For tapes we also need extra stats related to things like tape movement (via other I/O). There have been multiple end users requesting statistics including AT&T (and some HP customers who have not given permission to be named). It is impossible for them to investigate any issues related to tape performance in a non-invasive way. [jejb: eliminate PRId64] Signed-off-by: Shane Seymour <shane.seymour@hp.com> Tested-by: Shane Seymour <shane.seymour@hp.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com> |
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| .. | ||
| scsi_transport_srp | ||
| 00-INDEX | ||
| 53c700.txt | ||
| aacraid.txt | ||
| advansys.txt | ||
| aha152x.txt | ||
| aic7xxx.txt | ||
| aic79xx.txt | ||
| arcmsr_spec.txt | ||
| bfa.txt | ||
| bnx2fc.txt | ||
| BusLogic.txt | ||
| ChangeLog.1992-1997 | ||
| ChangeLog.arcmsr | ||
| ChangeLog.ips | ||
| ChangeLog.lpfc | ||
| ChangeLog.megaraid | ||
| ChangeLog.megaraid_sas | ||
| ChangeLog.ncr53c8xx | ||
| ChangeLog.sym53c8xx | ||
| ChangeLog.sym53c8xx_2 | ||
| cxgb3i.txt | ||
| dc395x.txt | ||
| dpti.txt | ||
| dtc3x80.txt | ||
| FlashPoint.txt | ||
| g_NCR5380.txt | ||
| hpsa.txt | ||
| hptiop.txt | ||
| in2000.txt | ||
| libsas.txt | ||
| LICENSE.FlashPoint | ||
| LICENSE.qla2xxx | ||
| LICENSE.qla4xxx | ||
| link_power_management_policy.txt | ||
| lpfc.txt | ||
| megaraid.txt | ||
| Mylex.txt | ||
| ncr53c8xx.txt | ||
| NinjaSCSI.txt | ||
| osd.txt | ||
| osst.txt | ||
| ppa.txt | ||
| qlogicfas.txt | ||
| scsi_eh.txt | ||
| scsi_fc_transport.txt | ||
| scsi_mid_low_api.txt | ||
| scsi-changer.txt | ||
| scsi-generic.txt | ||
| scsi-parameters.txt | ||
| scsi.txt | ||
| st.txt | ||
| sym53c8xx_2.txt | ||
| sym53c500_cs.txt | ||
| tmscsim.txt | ||
| ufs.txt | ||
| wd719x.txt | ||