Megaraid2: Dell PERC 4/DC connected to Dell Powervault 220S, poor performance.

Hi, Im wondering if anyone can help me out with the megaraid2 driver. Ive got a Dell PERC 4/DC connected to a Dell powervault 220S, cluster mode is enabled (write cache OFF) because eventually there will be two machines connected to the powervault for shared scsi. Ive tried the Dell PERC 4 card

[PATCH] sg: increase sglist_len of the sg_scatter_hold structure

unsigned short is too small for sizeof(struct scatterlist) * min(q->max_hw_segments, q->max_phys_segments). This fixes memory leak with 4096 segments since 16 (likely sg size with x86) * 4096 sets sglist_len to zero. This might not happen without sg chaining support. Signed-off-by: FUJITA Tomono

Re: [PATCH][RESEND] Fix a potential NULL pointer deref in the aic7xxx, ahc_print_register() function

On Sun, 2007-08-05 at 17:36 +0200, Jesper Juhl wrote: > On 04/08/07, James Bottomley <[EMAIL PROTECTED]> wrote: > > On Sat, 2007-08-04 at 20:30 +0200, Jesper Juhl wrote: > > > (resend of patch previously submitted on 28-Jul-2007 23:06) > > > > > > > > > Ehlo, > > > > > > The Coverity checker notice

Re: [PATCH][RESEND] Fix a potential NULL pointer deref in the aic7xxx, ahc_print_register() function

On Sunday 05 August 2007 17:42:31 Justin T. Gibbs wrote: > All of this logic was simplified back in '05 in the BSD drivers by adding > this to the top of the function: > > u_int dummy_column; > > if (cur_column == NULL) { > dummy_column = 0; > c

Re: [PATCH][RESEND] Fix a potential NULL pointer deref in the aic7xxx, ahc_print_register() function

On 04/08/07, James Bottomley <[EMAIL PROTECTED]> wrote: > On Sat, 2007-08-04 at 20:30 +0200, Jesper Juhl wrote: > > (resend of patch previously submitted on 28-Jul-2007 23:06) > > > > > > Ehlo, > > > > The Coverity checker noticed that we have a potential NULL pointer > > deref in drivers/scsi/aic7

Re: [PATCHSET 0/5] Peaceful co-existence of scsi_sgtable and Large IO sg-chaining

From: Boaz Harrosh <[EMAIL PROTECTED]> Subject: Re: [PATCHSET 0/5] Peaceful co-existence of scsi_sgtable and Large IO sg-chaining Date: Tue, 31 Jul 2007 23:12:26 +0300 > Boaz Harrosh wrote: > > FUJITA Tomonori wrote: > >> From: Benny Halevy <[EMAIL PROTECTED]> > >> Subject: Re: [PATCHSET 0/5] Pea

Re: [PATCH][RESEND] Fix a potential NULL pointer deref in the aic7xxx, ahc_print_register() function

All of this logic was simplified back in '05 in the BSD drivers by adding this to the top of the function: u_int dummy_column; if (cur_column == NULL) { dummy_column = 0; cur_column = &dummy_column; } and then stripping out the cur_column =

Re: [3/3] 2.6.23-rc2: known regressions

Hi all, Here is a list of some known regressions in 2.6.23-rc2. Feel free to add new regressions/remove fixed etc. http://kernelnewbies.org/known_regressions List of Aces NameRegressions fixed since 21-Jun-2007 Adrian Bunk6 Andi Kleen

Re: [2/2] 2.6.23-rc2: known regressions with patches

Hi all, Here is a list of some known regressions in 2.6.23-rc2 with patches available. Feel free to add new regressions/remove fixed etc. http://kernelnewbies.org/known_regressions List of Aces NameRegressions fixed since 21-Jun-2007 Adrian Bunk6

Re: [2/2] 2.6.23-rc2: known regressions with patches

On Sun, 2007-08-05 at 18:26 +0200, Michal Piotrowski wrote: > Hi all, > Modpost > > Subject : modpost bug breaks ia64 cross compilation > References : http://lkml.org/lkml/2007/7/27/30 > http://lkml.org/lkml/2007/7/27/418 > Last known good : ? > Submitter : Ja

Re: Some quick scsi documentation questions:

Stefan Richter wrote: > Rob Landley wrote: >> So an sg device is for something like a scanner that doesn't >> present a block device? > > That's what I heard. The sg driver is a SCSI pass-through while the bsg driver is a pass-through the specializes in SCSI and other (usually) storage related p

Re: [PATCH] sg: increase sglist_len of the sg_scatter_hold structure

FUJITA Tomonori wrote: > unsigned short is too small for sizeof(struct scatterlist) * > min(q->max_hw_segments, q->max_phys_segments). > > This fixes memory leak with 4096 segments since 16 (likely sg size > with x86) * 4096 sets sglist_len to zero. > > This might not happen without sg chaining s

Re: [2/2] 2.6.23-rc2: known regressions with patches

* Michal Piotrowski <[EMAIL PROTECTED]> wrote: > Memory management > > Subject : [bug] SLUB & freeing locks > References : http://lkml.org/lkml/2007/7/26/90 > Last known good : ? > Submitter : Ingo Molnar <[EMAIL PROTECTED]> > Caused-By : ? > Handled-By : Peter Zijl

Re: [3/3] 2.6.23-rc2: known regressions

Michal Piotrowski wrote: > Virtualization > > Subject : drivers/net/xen-netfront.c: bogus code > References : http://lkml.org/lkml/2007/7/22/256 > Last known good : ? > Submitter : Adrian Bunk <[EMAIL PROTECTED]> > Caused-By : ? > Handled-By : Jeremy Fitzhardinge <[EMA

[PATCH] sg: use idr to replace static arrays

sg uses a scheme to reallocate a single contiguous array of all its pointers for lookup and management. This didn't matter too much when sg could only attach 256 nodes, but now the maximum has been bumped up to 32k we're starting to push the limits of the maximum allocatable contiguous memory. Th

Re: [PATCH] sg: increase sglist_len of the sg_scatter_hold structure

On Sun, 05 Aug 2007 12:55:16 -0400 Douglas Gilbert <[EMAIL PROTECTED]> wrote: > FUJITA Tomonori wrote: > > unsigned short is too small for sizeof(struct scatterlist) * > > min(q->max_hw_segments, q->max_phys_segments). > > > > This fixes memory leak with 4096 segments since 16 (likely sg size > >