Re: Re: scsi-mq + open-iscsi support patches..?

2013-11-26 Thread kedacomkernel
Hi all， I used target-pending/scsi-mq to test intel ahci，but it can't work.I modify some places, now it can work.But still met hung task or oops. Who can receive my patch for that? Thanks! Jianpeng Ma >On Sat, 2013-11-02 at 16:10 +, Jayamohan Kallickal wrote: > > > >> >> On a related

Re: Re: scsi-mq + open-iscsi support patches..?

2013-11-26 Thread kedacomkernel
Hi all， I used target-pending/scsi-mq to test intel ahci，but it can't work.I modify some places, now it can work.But still met hung task or oops. Who can receive my patch for that? Thanks! Jianpeng Ma On Sat, 2013-11-02 at 16:10 +, Jayamohan Kallickal wrote: SNIP On a related

Re: Re: [PATCH 3/3] md/raid5: For stripe with R5_ReadNoMerge, we replace REQ_FLUSH with REQ_NOMERGE.

2013-10-30 Thread kedacomkernel
>On Wed, 30 Oct 2013 10:41:46 +0800 majianpeng wrote: > >> For R5_ReadNoMerge,it mean this bio can't merge with other bios or >> request.It used REQ_FLUSH to achieve this. But REQ_NOMERGE can do the >> same work. >> >> Signed-off-by: Jianpeng Ma >> --- >> drivers/md/raid5.c | 2 +- >> 1 file

Re: Re: [PATCH 3/3] md/raid5: For stripe with R5_ReadNoMerge, we replace REQ_FLUSH with REQ_NOMERGE.

2013-10-30 Thread kedacomkernel
On Wed, 30 Oct 2013 10:41:46 +0800 majianpeng majianp...@gmail.com wrote: For R5_ReadNoMerge,it mean this bio can't merge with other bios or request.It used REQ_FLUSH to achieve this. But REQ_NOMERGE can do the same work. Signed-off-by: Jianpeng Ma majianp...@gmail.com ---

Re: Re: O_DIRECT to md raid 6 is slow

2012-08-14 Thread kedacomkernel
On 2012-08-15 09:12 Andy Lutomirski Wrote: >Ubuntu's 3.2.0-27-generic. I can test on a newer kernel tomorrow. I guess maybe miss the blk_plug function. Can you add this patch and retest. Move unplugging for direct I/O from around ->direct_IO() down to do_blockdev_direct_IO(). This implicitly

Re: O_DIRECT to md raid 6 is slow

2012-08-14 Thread kedacomkernel
On 2012-08-15 08:49 Andy Lutomirski Wrote: >If I do: ># dd if=/dev/zero of=/dev/md0p1 bs=8M >then iostat -m 5 says: > >avg-cpu: %user %nice %system %iowait %steal %idle > 0.000.00 26.88 35.270.00 37.85 > >Device:tpsMB_read/sMB_wrtn/sMB_read

Re: O_DIRECT to md raid 6 is slow

2012-08-14 Thread kedacomkernel
On 2012-08-15 08:49 Andy Lutomirski l...@amacapital.net Wrote: If I do: # dd if=/dev/zero of=/dev/md0p1 bs=8M then iostat -m 5 says: avg-cpu: %user %nice %system %iowait %steal %idle 0.000.00 26.88 35.270.00 37.85 Device:tpsMB_read/sMB_wrtn/s

Re: Re: O_DIRECT to md raid 6 is slow

2012-08-14 Thread kedacomkernel
On 2012-08-15 09:12 Andy Lutomirski l...@amacapital.net Wrote: Ubuntu's 3.2.0-27-generic. I can test on a newer kernel tomorrow. I guess maybe miss the blk_plug function. Can you add this patch and retest. Move unplugging for direct I/O from around -direct_IO() down to do_blockdev_direct_IO().