Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-14 Thread Mikael Pettersson
On Sun, Feb 10, 2019 at 5:05 PM Jens Axboe wrote: > > On 2/10/19 8:44 AM, James Bottomley wrote: > > On Sun, 2019-02-10 at 10:17 +0100, Mikael Pettersson wrote: > >> On Sat, Feb 9, 2019 at 7:19 PM James Bottomley > >> wrote: > > [...] > >>> I think the reason for this is that the block mq path

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-12 Thread Jens Axboe
On 2/12/19 8:24 AM, James Bottomley wrote: > On Mon, 2019-02-11 at 19:50 -0700, Jens Axboe wrote: >> On 2/11/19 7:13 PM, James Bottomley wrote: >>> On Mon, 2019-02-11 at 09:31 -0700, Jens Axboe wrote: On 2/11/19 9:28 AM, James Bottomley wrote: > On Mon, 2019-02-11 at 08:46 -0700, Jens

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-12 Thread James Bottomley
On Mon, 2019-02-11 at 19:50 -0700, Jens Axboe wrote: > On 2/11/19 7:13 PM, James Bottomley wrote: > > On Mon, 2019-02-11 at 09:31 -0700, Jens Axboe wrote: > > > On 2/11/19 9:28 AM, James Bottomley wrote: > > > > On Mon, 2019-02-11 at 08:46 -0700, Jens Axboe wrote: > > > > > On 2/11/19 8:42 AM,

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread James Bottomley
tomley ; Mikael > > Pettersson > > Cc: Linux SPARC Kernel Mailing List ; > > linux-bl...@vger.kernel.org; linux-kernel@vger.kernel.org; linux- > > scsi > > > > Subject: Re: [5.0-rc5 regression] "scsi: kill off the legacy IO > > path" > >

RE: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread Elliott, Robert (Persistent Memory)
kernel.org; linux-kernel@vger.kernel.org; linux-scsi > > Subject: Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" > causes 5 minute delay during boot on Sun Blade 2500 ... > > We can either fix this by setting the QUEUE_FLAG_ADD_RANDOM if > > there's

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread Jens Axboe
On 2/11/19 7:13 PM, James Bottomley wrote: > On Mon, 2019-02-11 at 09:31 -0700, Jens Axboe wrote: >> On 2/11/19 9:28 AM, James Bottomley wrote: >>> On Mon, 2019-02-11 at 08:46 -0700, Jens Axboe wrote: On 2/11/19 8:42 AM, James Bottomley wrote: > On Mon, 2019-02-11 at 08:28 -0700, Jens

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread James Bottomley
On Mon, 2019-02-11 at 09:31 -0700, Jens Axboe wrote: > On 2/11/19 9:28 AM, James Bottomley wrote: > > On Mon, 2019-02-11 at 08:46 -0700, Jens Axboe wrote: > > > On 2/11/19 8:42 AM, James Bottomley wrote: > > > > On Mon, 2019-02-11 at 08:28 -0700, Jens Axboe wrote: > > > > > On 2/11/19 8:25 AM,

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread Jens Axboe
On 2/11/19 9:28 AM, James Bottomley wrote: > On Mon, 2019-02-11 at 08:46 -0700, Jens Axboe wrote: >> On 2/11/19 8:42 AM, James Bottomley wrote: >>> On Mon, 2019-02-11 at 08:28 -0700, Jens Axboe wrote: On 2/11/19 8:25 AM, James Bottomley wrote: > On Sun, 2019-02-10 at 09:35 -0700, Jens

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread James Bottomley
On Mon, 2019-02-11 at 08:46 -0700, Jens Axboe wrote: > On 2/11/19 8:42 AM, James Bottomley wrote: > > On Mon, 2019-02-11 at 08:28 -0700, Jens Axboe wrote: > > > On 2/11/19 8:25 AM, James Bottomley wrote: > > > > On Sun, 2019-02-10 at 09:35 -0700, Jens Axboe wrote: > > > > > On 2/10/19 9:25 AM,

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread Jens Axboe
On 2/11/19 8:42 AM, James Bottomley wrote: > On Mon, 2019-02-11 at 08:28 -0700, Jens Axboe wrote: >> On 2/11/19 8:25 AM, James Bottomley wrote: >>> On Sun, 2019-02-10 at 09:35 -0700, Jens Axboe wrote: On 2/10/19 9:25 AM, James Bottomley wrote: > On Sun, 2019-02-10 at 09:05 -0700, Jens

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread James Bottomley
On Mon, 2019-02-11 at 08:28 -0700, Jens Axboe wrote: > On 2/11/19 8:25 AM, James Bottomley wrote: > > On Sun, 2019-02-10 at 09:35 -0700, Jens Axboe wrote: > > > On 2/10/19 9:25 AM, James Bottomley wrote: > > > > On Sun, 2019-02-10 at 09:05 -0700, Jens Axboe wrote: > > > > > On 2/10/19 8:44 AM,

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread Jens Axboe
On 2/11/19 8:25 AM, James Bottomley wrote: > On Sun, 2019-02-10 at 09:35 -0700, Jens Axboe wrote: >> On 2/10/19 9:25 AM, James Bottomley wrote: >>> On Sun, 2019-02-10 at 09:05 -0700, Jens Axboe wrote: On 2/10/19 8:44 AM, James Bottomley wrote: > On Sun, 2019-02-10 at 10:17 +0100, Mikael

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-11 Thread James Bottomley
On Sun, 2019-02-10 at 09:35 -0700, Jens Axboe wrote: > On 2/10/19 9:25 AM, James Bottomley wrote: > > On Sun, 2019-02-10 at 09:05 -0700, Jens Axboe wrote: > > > On 2/10/19 8:44 AM, James Bottomley wrote: > > > > On Sun, 2019-02-10 at 10:17 +0100, Mikael Pettersson wrote: > > > > > On Sat, Feb 9,

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-10 Thread Jens Axboe
On 2/10/19 9:25 AM, James Bottomley wrote: > On Sun, 2019-02-10 at 09:05 -0700, Jens Axboe wrote: >> On 2/10/19 8:44 AM, James Bottomley wrote: >>> On Sun, 2019-02-10 at 10:17 +0100, Mikael Pettersson wrote: On Sat, Feb 9, 2019 at 7:19 PM James Bottomley wrote: >>> >>> [...] > I

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-10 Thread James Bottomley
On Sun, 2019-02-10 at 09:05 -0700, Jens Axboe wrote: > On 2/10/19 8:44 AM, James Bottomley wrote: > > On Sun, 2019-02-10 at 10:17 +0100, Mikael Pettersson wrote: > > > On Sat, Feb 9, 2019 at 7:19 PM James Bottomley > > > wrote: > > > > [...] > > > > I think the reason for this is that the block

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-10 Thread Jens Axboe
On 2/10/19 8:44 AM, James Bottomley wrote: > On Sun, 2019-02-10 at 10:17 +0100, Mikael Pettersson wrote: >> On Sat, Feb 9, 2019 at 7:19 PM James Bottomley >> wrote: > [...] >>> I think the reason for this is that the block mq path doesn't feed >>> the kernel entropy pool correctly, hence the need

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-10 Thread James Bottomley
On Sun, 2019-02-10 at 10:17 +0100, Mikael Pettersson wrote: > On Sat, Feb 9, 2019 at 7:19 PM James Bottomley > wrote: [...] > > I think the reason for this is that the block mq path doesn't feed > > the kernel entropy pool correctly, hence the need to install an > > entropy gatherer for systems

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-10 Thread Mikael Pettersson
On Sat, Feb 9, 2019 at 7:19 PM James Bottomley wrote: > > On Sat, 2019-02-09 at 18:04 +0100, Mikael Pettersson wrote: > > 4.20 and earlier kernels boot fine on my Sun Blade 2500 (UltraSPARC > > IIIi), but the 5.0-rc kernels consistently experience a 5 minute > > delay > > late during boot, after

Re: [5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-09 Thread James Bottomley
On Sat, 2019-02-09 at 18:04 +0100, Mikael Pettersson wrote: > 4.20 and earlier kernels boot fine on my Sun Blade 2500 (UltraSPARC > IIIi), but the 5.0-rc kernels consistently experience a 5 minute > delay > late during boot, after enabling networking but before allowing user > logins. E.g.

[5.0-rc5 regression] "scsi: kill off the legacy IO path" causes 5 minute delay during boot on Sun Blade 2500

2019-02-09 Thread Mikael Pettersson
4.20 and earlier kernels boot fine on my Sun Blade 2500 (UltraSPARC IIIi), but the 5.0-rc kernels consistently experience a 5 minute delay late during boot, after enabling networking but before allowing user logins. E.g. 5.0-rc5 dmesg has: [Fri Feb 8 17:13:17 2019] random: dbus-daemon: