Hi all, the current scsi_dh interface is very limited in functionality. In particular it's not possible to update the internal state without triggering a failover, and it not possible to figure out the internal state of the device handler.
This patchset adds the functionality to rescan the device handler if something has changed and adds a new sysfs attribute 'access_state' to display the internal state. To make this work the first patch implements functionality to rescan the VPD information, as it might have changed, too. The patchset is relative to my asynchronous ALUA update posted earlier. The entire tree can be found on git.kernel.org: kernel/git/hare/scsi-devel.git branch alua.v3 As usual, reviews and comments are welcome. Hannes Reinecke (5): scsi: rescan VPD attributes scsi_dh: add 'rescan' callback scsi: Add 'access_state' attribute scsi_dh_alua: add 'state' callback function scsi_dh_rdac: Add 'state' callback drivers/scsi/device_handler/scsi_dh_alua.c | 111 +++++++++++++++++++++++++---- drivers/scsi/device_handler/scsi_dh_rdac.c | 17 +++++ drivers/scsi/scsi.c | 20 +++++- drivers/scsi/scsi_lib.c | 1 + drivers/scsi/scsi_scan.c | 10 +++ drivers/scsi/scsi_sysfs.c | 61 +++++++++++++++- drivers/scsi/ses.c | 6 +- include/scsi/scsi_device.h | 14 ++++ include/scsi/scsi_dh.h | 2 + 9 files changed, 220 insertions(+), 22 deletions(-) -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
