linux-kernel - Re: 2.6.24.X: SATA/AHCI related boot delay.

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Message-Id: <200803170816.50597.volker.armin.hemmann@tu-clausthal.de>
Date:	Mon, 17 Mar 2008 08:16:50 +0100
From:	Volker Armin Hemmann <volker.armin.hemmann@...clausthal.de>
To:	Tejun Heo <htejun@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: 2.6.24.X: SATA/AHCI related boot delay. - not with 2.6.24.3

Hi,

I tried some more stuff, replaced the cables, played with bios settings.

No change.

Then I updated to 2.6.24.3 - and no hangs or 'softreset' failures anymore.

[   38.151334] ahci 0000:00:0a.0: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0xf 
impl IDE mode
[   38.151386] ahci 0000:00:0a.0: flags: 64bit sntf led clo pmp pio
[   38.151425] PCI: Setting latency timer of device 0000:00:0a.0 to 64
[   38.151626] scsi0 : ahci
[   38.151722] scsi1 : ahci
[   38.151788] scsi2 : ahci
[   38.151853] scsi3 : ahci
[   38.151942] ata1: SATA max UDMA/133 abar m8192@...9dfc000 port 0xf9dfc100 
irq 315
[   38.151990] ata2: SATA max UDMA/133 abar m8192@...9dfc000 port 0xf9dfc180 
irq 315
[   38.152037] ata3: SATA max UDMA/133 abar m8192@...9dfc000 port 0xf9dfc200 
irq 315
[   38.152085] ata4: SATA max UDMA/133 abar m8192@...9dfc000 port 0xf9dfc280 
irq 315
[   38.783287] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[   38.783915] ata1.00: ATA-7: WDC WD1600JS-00MHB1, 10.02E01, max UDMA/133
[   38.783957] ata1.00: 312581808 sectors, multi 16: LBA48
[   38.784590] ata1.00: configured for UDMA/133
[   39.415249] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[   39.435823] ata2.00: ATA-8: SAMSUNG HD501LJ, CR100-12, max UDMA7
[   39.435862] ata2.00: 976773168 sectors, multi 16: LBA48 NCQ (depth 0/32)
[   39.437862] ata2.00: configured for UDMA/133
[   39.754512] ata3: SATA link down (SStatus 0 SControl 300)
[   40.073818] ata4: SATA link down (SStatus 0 SControl 300)
[   40.073907] scsi 0:0:0:0: Direct-Access     ATA      WDC WD1600JS-00M 10.0 
PQ: 0 ANSI: 5
[   40.074017] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 
MB)
[   40.074061] sd 0:0:0:0: [sda] Write Protect is off
[   40.074099] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[   40.074107] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[   40.074178] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 
MB)
[   40.074220] sd 0:0:0:0: [sda] Write Protect is off
[   40.074258] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[   40.074265] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[   40.074314]  sda: sda1 sda2 sda3 sda4 < sda5 sda6 >
[   40.098590] sd 0:0:0:0: [sda] Attached SCSI disk
[   40.098725] scsi 1:0:0:0: Direct-Access     ATA      SAMSUNG HD501LJ  CR10 
PQ: 0 ANSI: 5
[   40.098835] sd 1:0:0:0: [sdb] 976773168 512-byte hardware sectors (500108 
MB)
[   40.098879] sd 1:0:0:0: [sdb] Write Protect is off
[   40.098917] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[   40.098926] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[   40.098996] sd 1:0:0:0: [sdb] 976773168 512-byte hardware sectors (500108 
MB)
[   40.099039] sd 1:0:0:0: [sdb] Write Protect is off
[   40.099076] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[   40.099084] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[   40.099133]  sdb: sdb1 sdb2
[   40.109668] sd 1:0:0:0: [sdb] Attached SCSI disk

The only change to other kernels was making ehci-hcd modular. 

I checked already, other kernels still have the IDENTITY error on coldboot and 
the softreset failure on reboot even with the changed config.

2.6.24.2 and 2.6.24.3 both have the reiser4 patch added.

So
2.6.24.2 = bad
2.6.24.3 = good
2.6.25-rc5 = bad 

Setting AHCI in bios still results in timeouts and harddisks not found.

Glück Auf,
Volker

View attachment "dmesg_2.6.24.3reiser4" of type "text/plain" (24990 bytes)