SATA SCSI Id assignments - two drives being assigned the same Channel/Id/Lun on boot

[Paul Howarth]

Claude Jones wrote:
> In the thread "mount doesn't mount on boot-up" we have found a 
> problem with the way my SATA drives are being ID'd, as seen below.
> 
> # cat /proc/scsi/scsi
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
>   Vendor: ATA      Model: ST3160023AS      Rev: 3.05
>   Type:   Direct-Access                    ANSI SCSI revision: 05
> Host: scsi1 Channel: 00 Id: 00 Lun: 00
>   Vendor: ATA      Model: ST3300622AS      Rev: 3.AA
>   Type:   Direct-Access                    ANSI SCSI revision: 05
> Host: scsi1 Channel: 00 Id: 01 Lun: 00
>   Vendor: ATA      Model: WDC WD5000YS-01M Rev: 07.0
>   Type:   Direct-Access                    ANSI SCSI revision: 05
> 
> The first two entries appear to have the same Channel/Id/Lun - 
> the problem I'm having has to do with my third drive not being mounted 
> at boot. My fstab looks like this:
> 
> LABEL=/                 /                       ext3    defaults        1 1
> LABEL=/boot1            /boot                   ext2    defaults        1 2
> devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
> tmpfs                   /dev/shm                tmpfs   defaults        0 0
> LABEL=/home             /home                   ext3    defaults        1 2
> proc                    /proc                   proc    defaults        0 0
> sysfs                   /sys                    sysfs   defaults        0 0
> LABEL=SWAP-sda2         swap                    swap    defaults        0 0
> /dev/sdc1		/home/cj/archive	ext3	defaults	1 2
> 
> This results in this error in my system log while booting:
> 
> Nov  2 00:37:04 localhost kernel: audit(1162445820.853:6): avc:  denied  { mounton } for  pid=2338 comm="mount" name="archive" dev=sdb1 ino=65175554 scontext=system_u:system_r:mount_t:s0 tcontext=user_u:object_r:user_home_t:s0 tclass=dir
> Nov  2 00:37:04 localhost kernel: audit(1162445820.853:7): avc:  denied  { mounton } for  pid=2338 comm="mount" name="archive" dev=sdb1 ino=65175554 scontext=system_u:system_r:mount_t:s0 tcontext=user_u:object_r:user_home_t:s0 tclass=dir
> 
> The last line in my fstab relating to sdc1 is the issue - when I boot, 
> the process is trying to mount sdb1 instead, for a second time, since 
> that drive is already mounted by the 5th line in my fstab which starts with 
> LABEL=/home

It's not trying to mount sdb1 here, it's trying to mount another device 
*on* a directory within sdb1 (your /home). You just need to fix the 
SELinux context type of that directory, as I suggested yesterday:

http://www.redhat.com/archives/fedora-list/2006-November/msg00127.html

Paul.