From: cpw@sgi.com (Cliff Wickman)
To: linux-kernel@vger.kernel.org
Subject: ATA scsi driver misbehavior under kdump capture kernel
Date: Fri, 27 Jul 2007 18:42:14 -0500 [thread overview]
Message-ID: <46AA82D6.mailxB9W1BQ61V@eag09.americas.sgi.com> (raw)
I've run into a problem with the ATA SCSI disk driver when running in a
kdump dump-capture kernel.
I'm running on 2-processor x86_64 box. It has 2 scsi disks, /dev/sda and
/dev/sdb
My kernel is 2.6.22, and built to be a dump capturing kernel loaded by kexec.
When I boot this kernel by itself, it finds both sda and sdb.
But when it is loaded by kexec and booted on a panic it only finds sda.
Any ideas from those familiar with the ATA driver?
-Cliff Wickman
SGI
I put some printk's into it and get this:
Standalone:
[nv_adma_error_handler]
cpw: ata_host_register probe port 1 (error_handler:ffffffff81348625)
cpw: ata_host_register call ata_port_probe
cpw: ata_host_register call ata_port_schedule
cpw: ata_host_register call ata_port_wait_eh
cpw: ata_port_wait_eh entered
cpw: ata_port_wait_eh, preparing to wait
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
cpw: ata_dev_configure entered
cpw: ata_dev_configure testing class
cpw: ata_dev_configure class is ATA_DEV_ATA
ata2.00: ATA-6: ST3200822AS, 3.01, max UDMA/133
ata2.00: 390721968 sectors, multi 16: LBA48
cpw: ata_dev_configure exiting
cpw: ata_dev_configure entered
cpw: ata_dev_configure testing class
cpw: ata_dev_configure class is ATA_DEV_ATA
cpw: ata_dev_configure exiting
cpw: ata_dev_set_mode printing:
ata2.00: configured for UDMA/133
cpw: ata_port_wait_eh, finished wait
cpw: ata_port_wait_eh exiting
cpw: ata_host_register done with probe port 1
When loaded with kexec and booted on a panic:
cpw: ata_host_register probe port 1 (error_handler:ffffffff81348625)
cpw: ata_host_register call ata_port_probe
cpw: ata_host_register call ata_port_schedule
cpw: ata_host_register call ata_port_wait_eh
cpw: ata_port_wait_eh entered
cpw: ata_port_wait_eh, preparing to wait
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
cpw: ata_port_wait_eh, finished wait
cpw: ata_port_wait_eh exiting
cpw: ata_host_register done with probe port 1
next reply other threads:[~2007-07-27 23:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-27 23:42 Cliff Wickman [this message]
2007-07-28 19:50 ` Guennadi Liakhovetski
2007-07-30 10:36 ` Tejun Heo
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