Dear Linux folks,
Probably you know it already, but the listed email address of the 3WARE
SCSI drivers maintainer linuxraid@xxxxxxx doesn’t work (for me).
Please see the attached message.
Kind regards,
Paul
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To: linux-scsi@xxxxxxxxxxxxxxx
Cc: Adam Radford <linuxraid@xxxxxxx>
From: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Subject: Ordering problems with 3ware controller
Message-ID: <a41b4bab-edb7-34ab-eb76-7ff4d6e3f677@xxxxxxxxxxxxx>
Date: Tue, 8 Nov 2016 11:07:37 +0100
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Dear Linux SCSI folks,
Updating from Linux 4.4.X to Linux 4.8.4, we noticed that the 3ware
devices under `/dev` – `/dev/twa0`, `/dev/twa1`, … – map to the
controllers differently.
This unfortunately breaks quite a lot of our scripts, as we depend on
the fact that the first controller is also in the front.
> $ dmesg | grep 3ware
> [ 14.509238] 3ware 9000 Storage Controller device driver for Linux v2.26.02.014.
> [ 14.824274] scsi host8: 3ware 9000 Storage Controller
> [ 14.824537] 3w-9xxx: scsi8: Found a 3ware 9000 Storage Controller at 0xd0200000, IRQ: 17.
> [ 15.508310] scsi host9: 3ware 9000 Storage Controller
> [ 15.508569] 3w-9xxx: scsi9: Found a 3ware 9000 Storage Controller at 0xda100000, IRQ: 17.
Tracing `twi_cli` it looks like the ordering of the devices in
`/sys/class/scsi_host` might have changed, as `getdents64` seems to be
used for the ordering of creating `/dev/twaX`.
> $ find /sys/class/scsi_host/ -ls
> 6033 0 drwxr-xr-x 2 root system 0 Nov 8 10:58 /sys/class/scsi_host/
> 23125 0 lrwxrwxrwx 1 root system 0 Oct 27 17:41 /sys/class/scsi_host/host0 -> ../../devices/pci0000:00/0000:00:07.0/ata1/host0/scsi_host/host0
> 29893 0 lrwxrwxrwx 1 root system 0 Oct 27 18:03 /sys/class/scsi_host/host9 -> ../../devices/pci0000:80/0000:80:0e.0/0000:90:00.0/host9/scsi_host/host9
> 23878 0 lrwxrwxrwx 1 root system 0 Oct 27 17:41 /sys/class/scsi_host/host7 -> ../../devices/pci0000:80/0000:80:08.0/ata8/host7/scsi_host/host7
> 23640 0 lrwxrwxrwx 1 root system 0 Oct 27 17:41 /sys/class/scsi_host/host5 -> ../../devices/pci0000:80/0000:80:07.0/ata6/host5/scsi_host/host5
> 23402 0 lrwxrwxrwx 1 root system 0 Oct 27 17:41 /sys/class/scsi_host/host3 -> ../../devices/pci0000:00/0000:00:08.0/ata4/host3/scsi_host/host3
> 23164 0 lrwxrwxrwx 1 root system 0 Oct 27 17:41 /sys/class/scsi_host/host1 -> ../.
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