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| author | Scott Teel <scott.teel@hp.com> | 2014-02-18 20:57:00 +0100 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2014-03-15 18:19:07 +0100 |
| commit | da0697bd3075598f7990002dc46f208d722b6160 (patch) | |
| tree | 64682fc16ed80050cf60c4f116384cb649502e44 /drivers/scsi/hpsa.h | |
| parent | [SCSI] hpsa: complete the ioaccel raidmap code (diff) | |
| download | linux-da0697bd3075598f7990002dc46f208d722b6160.tar.xz linux-da0697bd3075598f7990002dc46f208d722b6160.zip | |
[SCSI] hpsa: allow user to disable accelerated i/o path
Allow SSD Smart Path for a controller to be disabled by
the user, regardless of settings in controller firmware
or array configuration.
To disable: echo 0 > /sys/class/scsi_host/host<id>/acciopath_status
To re-enable: echo 1 > /sys/class/scsi_host/host<id>/acciopath_status
To check state: cat /sys/class/scsi_host/host<id>/acciopath_status
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/hpsa.h')
| -rw-r--r-- | drivers/scsi/hpsa.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h index 45bb1ea6835e..1d3340dbe310 100644 --- a/drivers/scsi/hpsa.h +++ b/drivers/scsi/hpsa.h @@ -181,6 +181,7 @@ struct ctlr_info { #define HPSATMF_LOG_QRY_TSET (1 << 24) #define HPSATMF_LOG_QRY_ASYNC (1 << 25) u32 events; + int acciopath_status; }; #define HPSA_ABORT_MSG 0 #define HPSA_DEVICE_RESET_MSG 1 |