On 10/23/2013 09:46 AM, James Bottomley wrote:
On Wed, 2013-10-23 at 11:25 +0200, Hannes Reinecke wrote:
On 10/16/2013 09:22 PM, James Bottomley wrote:
On Mon, 2013-07-01 at 08:50 +0200, Hannes Reinecke wrote:
This patchs adds an 'eh_deadline' sysfs attribute to the scsi
host which limits the
On Wed, 2013-10-23 at 11:25 +0200, Hannes Reinecke wrote:
> On 10/16/2013 09:22 PM, James Bottomley wrote:
> > On Mon, 2013-07-01 at 08:50 +0200, Hannes Reinecke wrote:
> >> This patchs adds an 'eh_deadline' sysfs attribute to the scsi
> >> host which limits the overall runtime of the SCSI EH.
> >>
On 10/16/2013 09:22 PM, James Bottomley wrote:
On Mon, 2013-07-01 at 08:50 +0200, Hannes Reinecke wrote:
This patchs adds an 'eh_deadline' sysfs attribute to the scsi
host which limits the overall runtime of the SCSI EH.
The 'eh_deadline' value is stored in the now obsolete field
'resetting'.
Wh
On Wed, 2013-10-16 at 19:22 +, James Bottomley wrote:
> What about instead:
>
> static int scsi_host_eh_past_deadline(struct Scsi_Host *shost, int percent) {
> if (!shost->last_reset || !shost->eh_deadline)
> return 0;
>
> if (time_before(jiffies,
>
On Mon, 2013-07-01 at 08:50 +0200, Hannes Reinecke wrote:
> This patchs adds an 'eh_deadline' sysfs attribute to the scsi
> host which limits the overall runtime of the SCSI EH.
> The 'eh_deadline' value is stored in the now obsolete field
> 'resetting'.
> When a command is failed the start time of
Hi, Hannes:
On 07/01/2013 02:50 PM, Hannes Reinecke wrote:
This patchs adds an 'eh_deadline' sysfs attribute to the scsi
host which limits the overall runtime of the SCSI EH.
The 'eh_deadline' value is stored in the now obsolete field
'resetting'.
When a command is failed the start time of the E
This patchs adds an 'eh_deadline' sysfs attribute to the scsi
host which limits the overall runtime of the SCSI EH.
The 'eh_deadline' value is stored in the now obsolete field
'resetting'.
When a command is failed the start time of the EH is stored
in 'last_reset'. If the overall runtime of the SCS
On Fri, 2013-06-28 at 09:14 +0200, Hannes Reinecke wrote:
> >> @@ -232,6 +272,9 @@ int scsi_eh_scmd_add(struct scsi_cmnd *scmd, int
> >> eh_flag)
> >>if (scsi_host_set_state(shost, SHOST_CANCEL_RECOVERY))
> >>goto out_unlock;
> >>
> >> + if (sdev->eh_deadline &&
On 06/28/2013 09:29 AM, Bart Van Assche wrote:
> On 06/10/13 13:11, Hannes Reinecke wrote:
>> +static int sdev_eh_deadline(struct Scsi_Host *shost,
>> + unsigned long eh_start)
>> +{
>> +if (!shost->eh_deadline)
>> +return 0;
>> +
>> +if (shost->last_reset != 0 &&
>> +
On 06/10/13 13:11, Hannes Reinecke wrote:
+static int sdev_eh_deadline(struct Scsi_Host *shost,
+ unsigned long eh_start)
+{
+ if (!shost->eh_deadline)
+ return 0;
+
+ if (shost->last_reset != 0 &&
+ time_before(shost->last_reset, eh_st
On 06/27/2013 04:33 PM, Ewan Milne wrote:
> The eh_deadline changes allow for a significant improvement
> in multipath failover time. It works very well in our testing.
> I do have a few corrections, see below:
>
> On Mon, 2013-06-10 at 13:11 +0200, Hannes Reinecke wrote:
>> This patchs adds an '
The eh_deadline changes allow for a significant improvement
in multipath failover time. It works very well in our testing.
I do have a few corrections, see below:
On Mon, 2013-06-10 at 13:11 +0200, Hannes Reinecke wrote:
> This patchs adds an 'eh_deadline' attribute to the scsi
> host which limit
This patchs adds an 'eh_deadline' attribute to the scsi
host which limits the overall runtime of the SCSI EH.
When a command is failed the start time of the EH is stored
in 'last_reset'. If the overall runtime of the SCSI EH is longer
than last_reset + eh_deadline, the EH is short-circuited and
fal
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