On Thu, Nov 10, 2016 at 8:05 PM, Andrey Grodzovsky <andrey2805@xxxxxxxxx> wrote: > Problem: > This is a work around for a bug with LSI Fusion MPT SAS2 when > pefroming secure erase. Due to the very long time the operation > takes commands issued during the erase will time out and will trigger > execution of abort hook. Even though the abort hook is called for > the specific command which timed out this leads to entire device halt > (scsi_state terminated) and premature termination of the secured erase. > > Fix: > Set device state to busy while erase in progress to reject any incoming > commands until the erase is done. The device is blocked any way during > this time and cannot execute any other command. > More data and logs can be found here - > https://drive.google.com/file/d/0B9ocOHYHbbS1Q3VMdkkzeWFkTjg/view > > v2: Update according to example patch by Hannes Reinecke to apply > the blocking logic to any ATA 12/16 command. > > v3: Use SCSI commands opcodes definitions instead of value and > correct identation. > > v4: Fix checkpath errors and warning. > > Signed-off-by: Andrey Grodzovsky <andrey2805@xxxxxxxxx> > Cc: <linux-scsi@xxxxxxxxxxxxxxx> > Cc: Sathya Prakash <sathya.prakash@xxxxxxxxxxxx> > Cc: Chaitra P B <chaitra.basappa@xxxxxxxxxxxx> > Cc: Suganath Prabu Subramani <suganath-prabu.subramani@xxxxxxxxxxxx> > Cc: Sreekanth Reddy <Sreekanth.Reddy@xxxxxxxxxxxx> > Cc: Hannes Reinecke <hare@xxxxxxx> > Cc: <stable@xxxxxxxxxxxxxxx> Acked-by: Sreekanth Reddy <Sreekanth.Reddy@xxxxxxxxxxxx> > --- > drivers/scsi/mpt3sas/mpt3sas_scsih.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c > index 5a97e32..c032319 100644 > --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c > +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c > @@ -3500,6 +3500,10 @@ _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status) > SAM_STAT_CHECK_CONDITION; > } > > +static inline bool ata_12_16_cmd(struct scsi_cmnd *scmd) > +{ > + return (scmd->cmnd[0] == ATA_12 || scmd->cmnd[0] == ATA_16); > +} > > /** > * _scsih_qcmd - main scsi request entry point > @@ -3528,6 +3532,14 @@ _scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd) > scsi_print_command(scmd); > #endif > > + /** > + * Lock the device for any subsequent command until > + * command is done. > + */ > + if (ata_12_16_cmd(scmd)) > + scsi_internal_device_block(scmd->device); > + > + > sas_device_priv_data = scmd->device->hostdata; > if (!sas_device_priv_data || !sas_device_priv_data->sas_target) { > scmd->result = DID_NO_CONNECT << 16; > @@ -4062,6 +4074,10 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) > if (scmd == NULL) > return 1; > > + if (ata_12_16_cmd(scmd)) > + scsi_internal_device_unblock(scmd->device, SDEV_RUNNING); > + > + > mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); > > if (mpi_reply == NULL) { > -- > 2.1.4 > -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
