diff options
| author | Stephen Cameron <stephenmcameron@gmail.com> | 2015-04-23 09:31:47 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Odin.com> | 2015-05-31 11:20:24 -0700 |
| commit | 41ce4c355765a5e0a8e1c8ff8d7257160bbae93d (patch) | |
| tree | d876204ee2e897dc2a6ba55acdaa6ce0290c7fcc /drivers/scsi/hpsa_cmd.h | |
| parent | 6b6c1cd7da65225d61107bbe87495450cc0c5b11 (diff) | |
| download | linux-41ce4c355765a5e0a8e1c8ff8d7257160bbae93d.tar.bz2 | |
hpsa: add masked physical devices into h->dev[] array
Cache the ioaccel handle so that when we need to abort commands sent
down the ioaccel2 path, we can look up the LUN ID in h->dev[] instead of
having to do I/O to the controller.
Add a field to elements in h->dev[] to keep track of how the device is exposed
to the SCSI mid layer: Not at all, without an upper level driver
(no_uld_attach) or normally exposed.
Since masked physical devices are now present in h->dev[] array
it would be perfectly possible to do
echo scsi add-single-device 2 2 0 0 > /proc/scsi/scsi
and bring them online. This was previously not allowed for masked
physical devices.
Ensure that the mapping of physical disks to logical drives gets updated in a
consistent way when a RAID migration occurs and is not touched until updates
to it are complete.
now instead of doing CISS_REPORT_PHYSICAL to get the LUNID for
the physical disk in hpsa_get_pdisk_of_ioaccel2(), just get
it out of h->dev[] where we already have it cached.
do not touch phys_disk[] for ioaccel enabled logical drives during rescan
Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@Suse.de>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/hpsa_cmd.h')
| -rw-r--r-- | drivers/scsi/hpsa_cmd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index 3a621c74b76f..76d549964e84 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -240,6 +240,7 @@ struct ReportLUNdata { struct ext_report_lun_entry { u8 lunid[8]; +#define MASKED_DEVICE(x) ((x)[3] & 0xC0) #define GET_BMIC_BUS(lunid) ((lunid)[7] & 0x3F) #define GET_BMIC_LEVEL_TWO_TARGET(lunid) ((lunid)[6]) #define GET_BMIC_DRIVE_NUMBER(lunid) (((GET_BMIC_BUS((lunid)) - 1) << 8) + \ @@ -247,6 +248,8 @@ struct ext_report_lun_entry { u8 wwid[8]; u8 device_type; u8 device_flags; +#define NON_DISK_PHYS_DEV(x) ((x)[17] & 0x01) +#define PHYS_IOACCEL(x) ((x)[17] & 0x08) u8 lun_count; /* multi-lun device, how many luns */ u8 redundant_paths; u32 ioaccel_handle; /* ioaccel1 only uses lower 16 bits */ |