Smit, Thanks for your efforts for verifying the patch. >>>>>> The disks are detected during boot in reverse order (port 1 -> /dev/sde,port 2 -> /dev/sdd, port 3 -> /dev/sdc, port 4, /dev/sdb) is it possiblewith a simple patch to fix this? Mostly your HBA is discovering in reverse order. Because we are not facing this kind of problem here. This is specific to your HBA so we should not do changes in driver. Please let me know if you observe any issues with this driver. --Srini. -----Original Message----- From: linux-scsi-owner@xxxxxxxxxxxxxxx [mailto:linux-scsi-owner@xxxxxxxxxxxxxxx] On Behalf Of Caspar Smit Sent: Tuesday, February 23, 2010 5:11 PM To: linux-scsi@xxxxxxxxxxxxxxx Subject: Re: [PATCH] MVSAS: hot plug handling and IO issues Another note: -- 4) One thing that occured was the following: during a raid1 initialization of 2 SAS disks and a raid5 init of 8x SSD's i got a call trace by libata-core.c (see attachment for details). The system continued to work fine after the trace. -- I noticed later that after the above happened, one of my SAS disks was TERRIBLY slow (5MB/s raid1 sync in stead of 120MB/s) after a reboot all was fine so it wasn't a defective disk. Then something else I posted somewhat earlier. The disks are detected during boot in reverse order (port 1 -> /dev/sde, port 2 -> /dev/sdd, port 3 -> /dev/sdc, port 4, /dev/sdb) is it possible with a simple patch to fix this? Thanks for all your great work! Kind regards, Caspar Smit > On Wed, Feb 17, 2010 at 12:53 PM, Srinivas Naga Venkatasatya > Pasagadugula - ERS, HCL Tech <satyasrinivasp@xxxxxx> wrote: >> Hi Smit, >> >> This patch is not exactly replaced with Nov-09 patches. >> My patch addresses the RAID5/6 issues also. Below issues are addressed by my patch. >> 1. Tape issues. >> 2. RAID-5/6 I/O fails. >> 3. LVM IO fails and subsequent init 6 hang (connect SAS+SATA in cascaded expanders, crate volume group and logical volumes, run file I/O (alltest), unplug one drive) >> 4. Disk stress I/O on 4096 sector size. >> 5. Hot insertion of drives giving panic. >> 6. 'fdisk -l' hangs with hot plugging of SATA/SAS drives in expander while IO (Diskstress and alltest) is going on and IO stopped. >> >> I can't combined my patch with November-09 patches. James also rejected those patches as those are not proper. Let me know if you have issues with my patch. >> >> --Srini. > > > I haven't tested yet, but looks like you're doing excellent work, and your documentation/overview of the work is superb. > -- > 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 > DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. ----------------------------------------------------------------------------------------------------------------------- -- 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
