Brian
Sun Aug 14 21:51:38 CDT 2005
Hi,
I tried it, but the returned value of SrbStatus in SRB is
SRB_STATUS_INVALID_REQUEST.
In DDK, this belongs SCSI Port Driver's Queue Management. Is it
suitable for IDE HDD? There is no document about IDE port's Queue
Management in DDK.
Regards,
Brian
Maxim S. Shatskih =E5=AF=AB=E9=81=93=EF=BC=9A
> Try this DDK article in MSDN"
>
> "Locking SCSI Port Driver's Internal Queue"
>
> --
> Maxim Shatskih, Windows DDK MVP
> StorageCraft Corporation
> maxim@storagecraft.com
>
http://www.storagecraft.com
>
> "Brian" <Brian8701@gmail.com> wrote in message
> news:1123823806.577777.262420@g14g2000cwa.googlegroups.com...
> Hi,
> Could you tell me how to set SBR to freeze queue? I cant find any
> parameter in "Function" element of SRB about "freeze queue". Thanks a
> lots.
>
>
> Maxim S. Shatskih ???
>
> > IIRC the storage stacks support the "freeze queue" SRB which must be se=
nt
> > down to the storage port. Storage port has its own queue.
> >
> > --
> > Maxim Shatskih, Windows DDK MVP
> > StorageCraft Corporation
> > maxim@storagecraft.com
> >
http://www.storagecraft.com
> >
> > "Brian" <Brian8701@gmail.com> wrote in message
> > news:1123748582.477503.265980@g47g2000cwa.googlegroups.com...
> > Hi,
> > Thanks for reply.
> >
> > The purpose of queuing IRP is that I want to park disk under specific
> > condition and then unpark disk after a while to do previous IRP_MJ_SCSI
> > in queue. So, first I must lock IRP_MJ_SCSI and then do park/unpard
> > action. The item I concern is whether the number of IRP in queue is
> > over limitation of system and than system crash?
> > By the way, I hold on request about 50 minutes and system is ok
> > after releasing IRP.
> >
> > Brian
> >
> > Doron Holan [MS] ???
> >
> > > the number of queued requests in a CSQ is limited by system memory, t=
here
> is
> > > no hardcoded limit. what i think you are seeing is that the stack ab=
ove
> you
> > > (disk) has a hard coded limit of transfers. this limit is probably b=
ased
> on
> > > the maximum number of concurrent transfers the disk controller can ha=
ndle
> > > (which is queried at runtime during startup).
> > >
> > > why are you holding onto the requests and never letting them complete?
> > >
> > > d
> > >
> > > --
> > > Please do not send e-mail directly to this alias. this alias is for
> > > newsgroup purposes only.
> > > This posting is provided "AS IS" with no warranties, and confers no r=
ights.
> > >
> > >
> > > "Brian" <Brian8701@gmail.com> wrote in message
> > > news:1123726599.363812.35500@g49g2000cwa.googlegroups.com...
> > > > Hi,
> > > > I implement a lower filter driver to queue IPR by using cancel-safe
> > > > queue framework. The system seems not to send IRP again when the nu=
mber
> > > > of IRP is about 25. The following is my test:
> > > >
> > > > 1. create a lower filter driver under Disk.sys
> > > > 2. Queue IRP_MJ_SCSI in lower filter driver.
> > > > 3. The system seems not to send IRP_MJ_SCSI again when the number =
of
> > > > IRP_MJ_SCSI in queue is about 25. Lower filter driver dont release
> > > > IRP_MJ_SCSI in queue until after ten minutes.
> > > > 5. Lower filter driver release IRP_MJ_SCSI and it's ok.
> > > >
> > > > Question:
> > > > 1. How many IRP can be queued at most by using cancel-safe queue
> > > > framework?
> > > > 2. Will it cause problem if lower filter driver queue IRP ten minu=
tes
> > > > or even more?
> > > > 3. Why the system dont send IRP_MJ_SCSI again when the number of I=
RP
> > > > in queue is about 25? What's mechanism?
> > > >
> > > > Thanks in advanced.
> > > >
> > > > Brian
> > > >