Re: [gentoo-user] OT: How does kernel determine drive order?
On 5 Nov 2007, at 17:45, Anthony E. Caudel wrote: How does the kernel (2.6.22) determine the order of SATA drives (sda, sdb, etc.) when it boots up? ... But if you're having a problem with it, or want to change the driver order, then take a poke around in /etc/udev/rules.d/. But would this be relevant? The kernel boot order is set at boot time, long before udev comes up. Doh! Good point. I assume you're right. Stroller. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] OT: How does kernel determine drive order?
On Mon, 2007-11-05 at 11:43 -0600, Anthony E. Caudel wrote: > Jarry wrote: > > Anthony E. Caudel wrote: > >> How does the kernel (2.6.22) determine the order of SATA drives (sda, > >> sdb, etc.) when it boots up? > > > > I just checked my computer, and sda is the drive plugged in > > the first sata-port, and sdb the one in the second port > > (according to the info in motherboard manual). > > > > Maybe it is something similar as with p-ata drives, where hda > > is always the master drive on the first pata channel... > > > > Jarry > For my mobo (Asus A8N-SLI Premium), sda is plugged into SATA slot 3. > Interestingly, it is NOT the first drive listed in the BIOS either. > > I think, but not sure, that the kernel looks at the buses to determine > the drive order. > > Maybe someone can confirm? >From what I've heard/read, you cannot guarantee device ordering of SCSI(-like) devices. It's recommended that you use disk labels/UUIDs (and initramfs/initrd for / device). My BIOS actually lets you select with drives show up in the BIOS as well as what order. On one machine I have 8 drives but only 1 configured in the BIOS (the boot drive). However at the Linux level it shows up as /dev/sdj or something like that. But I think if I had a usb stick in plugged in while it's being booted it might show up as something different. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] OT: How does kernel determine drive order?
Stroller wrote: > > On 5 Nov 2007, at 05:17, Jarry wrote: > >> Anthony E. Caudel wrote: >>> How does the kernel (2.6.22) determine the order of SATA drives (sda, >>> sdb, etc.) when it boots up? >> >> I just checked my computer, and sda is the drive plugged in >> the first sata-port, and sdb the one in the second port >> (according to the info in motherboard manual). >> >> Maybe it is something similar as with p-ata drives, where hda >> is always the master drive on the first pata channel... > > What he said. > > But if you're having a problem with it, or want to change the driver > order, then take a poke around in /etc/udev/rules.d/. > > Stroller. But would this be relevant? The kernel boot order is set at boot time, long before udev comes up. Tony -- Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] OT: How does kernel determine drive order?
Jarry wrote: > Anthony E. Caudel wrote: >> How does the kernel (2.6.22) determine the order of SATA drives (sda, >> sdb, etc.) when it boots up? > > I just checked my computer, and sda is the drive plugged in > the first sata-port, and sdb the one in the second port > (according to the info in motherboard manual). > > Maybe it is something similar as with p-ata drives, where hda > is always the master drive on the first pata channel... > > Jarry For my mobo (Asus A8N-SLI Premium), sda is plugged into SATA slot 3. Interestingly, it is NOT the first drive listed in the BIOS either. I think, but not sure, that the kernel looks at the buses to determine the drive order. Maybe someone can confirm? Tony -- Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] OT: How does kernel determine drive order?
On 5 Nov 2007, at 05:17, Jarry wrote: Anthony E. Caudel wrote: How does the kernel (2.6.22) determine the order of SATA drives (sda, sdb, etc.) when it boots up? I just checked my computer, and sda is the drive plugged in the first sata-port, and sdb the one in the second port (according to the info in motherboard manual). Maybe it is something similar as with p-ata drives, where hda is always the master drive on the first pata channel... What he said. But if you're having a problem with it, or want to change the driver order, then take a poke around in /etc/udev/rules.d/. Stroller. -- [EMAIL PROTECTED] mailing list
Re: [gentoo-user] OT: How does kernel determine drive order?
Anthony E. Caudel wrote: How does the kernel (2.6.22) determine the order of SATA drives (sda, sdb, etc.) when it boots up? I just checked my computer, and sda is the drive plugged in the first sata-port, and sdb the one in the second port (according to the info in motherboard manual). Maybe it is something similar as with p-ata drives, where hda is always the master drive on the first pata channel... Jarry -- ___ This mailbox accepts e-mails only from selected mailing-lists! Everything else is considered to be spam and therefore deleted. -- [EMAIL PROTECTED] mailing list
[gentoo-user] OT: How does kernel determine drive order?
How does the kernel (2.6.22) determine the order of SATA drives (sda, sdb, etc.) when it boots up? Tony -- Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin -- [EMAIL PROTECTED] mailing list
