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| author | K. Y. Srinivasan <kys@microsoft.com> | 2013-02-22 00:04:53 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-02-24 13:41:23 +0400 |
| commit | 6781209e7621a900fe83b3c09b1a02ec1a947c75 (patch) | |
| tree | 42b74459179a2432ad342517f854842c4f3c8d22 /drivers/scsi/storvsc_drv.c | |
| parent | c50bd4481707cef2a81c648f6e28e7a0a5f21129 (diff) | |
| download | linux-6781209e7621a900fe83b3c09b1a02ec1a947c75.tar.xz | |
[SCSI] storvsc: Handle dynamic resizing of the device
Handle LUN size changes by re-scanning the device.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
| -rw-r--r-- | drivers/scsi/storvsc_drv.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 95c759fe071a..5dd6c49bfa7e 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -201,6 +201,7 @@ enum storvsc_request_type { #define SRB_STATUS_AUTOSENSE_VALID 0x80 #define SRB_STATUS_INVALID_LUN 0x20 #define SRB_STATUS_SUCCESS 0x01 +#define SRB_STATUS_ABORTED 0x02 #define SRB_STATUS_ERROR 0x04 /* @@ -295,6 +296,25 @@ struct storvsc_scan_work { uint lun; }; +static void storvsc_device_scan(struct work_struct *work) +{ + struct storvsc_scan_work *wrk; + uint lun; + struct scsi_device *sdev; + + wrk = container_of(work, struct storvsc_scan_work, work); + lun = wrk->lun; + + sdev = scsi_device_lookup(wrk->host, 0, 0, lun); + if (!sdev) + goto done; + scsi_rescan_device(&sdev->sdev_gendev); + scsi_device_put(sdev); + +done: + kfree(wrk); +} + static void storvsc_bus_scan(struct work_struct *work) { struct storvsc_scan_work *wrk; @@ -791,7 +811,18 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb, do_work = true; process_err_fn = storvsc_remove_lun; break; + case (SRB_STATUS_ABORTED | SRB_STATUS_AUTOSENSE_VALID): + if ((asc == 0x2a) && (ascq == 0x9)) { + do_work = true; + process_err_fn = storvsc_device_scan; + /* + * Retry the I/O that trigerred this. + */ + set_host_byte(scmnd, DID_REQUEUE); + } + break; } + if (!do_work) return; |