USB Debian 11 installer and target drive device node [was fstab problem]

From	David Christensen <dpchrist@holgerdanske.com>
Newsgroups	linux.debian.user
Subject	USB Debian 11 installer and target drive device node [was fstab problem]
Date	2022-05-09 20:40 +0200
Message-ID	<Elgsy-enso-11@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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On 5/9/22 10:21, David Wright wrote:
 > On Sun 08 May 2022 at 23:39:31 (-0700), David Christensen wrote:

 >> As noted by another reader in another thread, the Debian 11 installer
 >> appears to always assign /dev/sda to d-i USB installation media; in
 >> spite of decades of standard practice of using the first drive node
 >> for the target drive.  Thus, the target drive may have been /dev/sdb
 >> at installation time, resulting in "sdb" in crypttab(5) and/or
 >> fstab(5) entries rather than the conventional "sda".

 > This is news to me, and I'm not sure why you blame the d-i's going
 > against decades of precedent. Yes, it can happen, and I guess it might
 > be the result of the way the buses are configured inside the machine.
 > Gone are the simple days of PATAs on hda.
 >
 > Anyway, here are six machines: three are laptops, three EFIs, one AiO,
 > one i386, all GPT, all netinst, variously 11.1–3 with firmware. All
 > except the last have the installer on sdb, and the reason there is
 > obvious.
 >
 > The sole occasion where the devices have been named the "wrong" way
 > round is when I installed Debian on an EFI laptop onto a virgin
 > external hard drive. If memory serves, the d-i was connected through
 > a hub to the USB-C port, the drive was on the single USB3 port.
 > I think.
 >
 > $ grep -e sda -e sdb -e nvme /var/log/installer/syslog | sed -e 
'/CD-ROM/{p; q}'
 > Jan  1 16:29:18 kernel: [    1.815571] sd 1:0:0:0: [sda] 976773168 
512-byte logical blocks: (500 GB/466 GiB)
 > Jan  1 16:29:18 kernel: [    1.816244] sd 1:0:0:0: [sda] 4096-byte 
physical blocks
 > Jan  1 16:29:18 kernel: [    1.817495] sd 1:0:0:0: [sda] Write 
Protect is off
 > Jan  1 16:29:18 kernel: [    1.819103] sd 1:0:0:0: [sda] Mode Sense: 
00 3a 00 00
 > Jan  1 16:29:18 kernel: [    1.819791] sd 1:0:0:0: [sda] Write cache: 
enabled, read cache: enabled, doesn't support DPO or FUA
 > Jan  1 16:29:18 kernel: [    1.853168]  sda: sda1 sda2 sda3 sda4 sda5 
sda6 sda7 sda8 sda9 sda10 sda11
 > Jan  1 16:29:18 kernel: [    1.875612] sd 1:0:0:0: [sda] Attached 
SCSI disk
 > Jan  1 16:29:18 kernel: [    3.422080] sd 3:0:0:0: [sdb] 2006528 
512-byte logical blocks: (1.03 GB/980 MiB)
 > Jan  1 16:29:18 kernel: [    3.422370] sd 3:0:0:0: [sdb] Write 
Protect is off
 > Jan  1 16:29:18 kernel: [    3.422372] sd 3:0:0:0: [sdb] Mode Sense: 
03 00 00 00
 > Jan  1 16:29:18 kernel: [    3.422673] sd 3:0:0:0: [sdb] No Caching 
mode page found
 > Jan  1 16:29:18 kernel: [    3.422674] sd 3:0:0:0: [sdb] Assuming 
drive cache: write through
 > Jan  1 16:29:18 kernel: [    3.453581]  sdb: sdb1 sdb2
 > Jan  1 16:29:18 kernel: [    3.490735] sd 3:0:0:0: [sdb] Attached 
SCSI removable disk
 > Jan  1 16:29:55 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > Jan  1 16:29:55 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > $
 >
 > $ grep -e sda -e sdb -e nvme /var/log/installer/syslog | sed -e 
'/CD-ROM/{p; q}'
 > Jan 25 21:12:08 kernel: [    4.310937] sd 0:0:0:0: [sda] 976773168 
512-byte logical blocks: (500 GB/466 GiB)
 > Jan 25 21:12:08 kernel: [    4.310951] sd 0:0:0:0: [sda] Write 
Protect is off
 > Jan 25 21:12:08 kernel: [    4.310952] sd 0:0:0:0: [sda] Mode Sense: 
00 3a 00 00
 > Jan 25 21:12:08 kernel: [    4.310972] sd 0:0:0:0: [sda] Write cache: 
enabled, read cache: enabled, doesn't support DPO or FUA
 > Jan 25 21:12:08 kernel: [    4.681368]  sda: sda1 sda2 sda3 sda4 sda5 
sda6
 > Jan 25 21:12:08 kernel: [    4.839485] sd 0:0:0:0: [sda] Attached 
SCSI disk
 > Jan 25 21:12:08 kernel: [    5.617893] sd 6:0:0:0: [sdb] 2006528 
512-byte logical blocks: (1.03 GB/980 MiB)
 > Jan 25 21:12:08 kernel: [    5.637613] sd 6:0:0:0: [sdb] Write 
Protect is off
 > Jan 25 21:12:08 kernel: [    5.655705] sd 6:0:0:0: [sdb] Mode Sense: 
03 00 00 00
 > Jan 25 21:12:08 kernel: [    5.656965] sd 6:0:0:0: [sdb] No Caching 
mode page found
 > Jan 25 21:12:08 kernel: [    5.674988] sd 6:0:0:0: [sdb] Assuming 
drive cache: write through
 > Jan 25 21:12:08 kernel: [    5.718770]  sdb: sdb1 sdb2
 > Jan 25 21:12:08 kernel: [    5.762284] sd 6:0:0:0: [sdb] Attached 
SCSI removable disk
 > Jan 25 21:13:04 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > Jan 25 21:13:04 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > $
 >
 > $ grep -e sda -e sdb -e nvme /var/log/installer/syslog | sed -e 
'/CD-ROM/{p; q}'
 > Feb  1 17:32:10 kernel: [    5.562125] sd 0:0:0:0: [sda] 976773168 
512-byte logical blocks: (500 GB/466 GiB)
 > Feb  1 17:32:10 kernel: [    5.569327] sd 0:0:0:0: [sda] Write 
Protect is off
 > Feb  1 17:32:10 kernel: [    5.576324] sd 0:0:0:0: [sda] Mode Sense: 
00 3a 00 00
 > Feb  1 17:32:10 kernel: [    5.576399] sd 0:0:0:0: [sda] Write cache: 
enabled, read cache: enabled, doesn't support DPO or FUA
 > Feb  1 17:32:10 kernel: [    5.646877]  sda: sda1 sda2 sda3 sda4 sda5 
sda6
 > Feb  1 17:32:10 kernel: [    5.667737] sd 0:0:0:0: [sda] Attached 
SCSI disk
 > Feb  1 17:32:10 kernel: [    5.834514] sd 4:0:0:0: [sdb] 2006528 
512-byte logical blocks: (1.03 GB/980 MiB)
 > Feb  1 17:32:10 kernel: [    5.849013] sd 4:0:0:0: [sdb] Write 
Protect is off
 > Feb  1 17:32:10 kernel: [    5.855644] sd 4:0:0:0: [sdb] Mode Sense: 
03 00 00 00
 > Feb  1 17:32:10 kernel: [    5.856638] sd 4:0:0:0: [sdb] No Caching 
mode page found
 > Feb  1 17:32:10 kernel: [    5.863141] sd 4:0:0:0: [sdb] Assuming 
drive cache: write through
 > Feb  1 17:32:10 kernel: [    5.889163]  sdb: sdb1 sdb2
 > Feb  1 17:32:10 kernel: [    5.914390] sd 4:0:0:0: [sdb] Attached 
SCSI removable disk
 > Feb  1 17:32:45 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > Feb  1 17:32:45 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > $
 >
 > $ grep -e sda -e sdb -e nvme /var/log/installer/syslog | sed -e 
'/CD-ROM/{p; q}'
 > Apr 17 01:01:15 kernel: [    1.835596] sd 0:0:0:0: [sda] 976773168 
512-byte logical blocks: (500 GB/466 GiB)
 > Apr 17 01:01:15 kernel: [    1.837196] sd 0:0:0:0: [sda] 4096-byte 
physical blocks
 > Apr 17 01:01:15 kernel: [    1.838100] sd 0:0:0:0: [sda] Write 
Protect is off
 > Apr 17 01:01:15 kernel: [    1.838967] sd 0:0:0:0: [sda] Mode Sense: 
00 3a 00 00
 > Apr 17 01:01:15 kernel: [    1.838992] sd 0:0:0:0: [sda] Write cache: 
enabled, read cache: enabled, doesn't support DPO or FUA
 > Apr 17 01:01:15 kernel: [    1.863206]  sda: sda1 sda2 sda3 sda4 sda5 
sda6
 > Apr 17 01:01:15 kernel: [    1.888613] sd 0:0:0:0: [sda] Attached 
SCSI disk
 > Apr 17 01:01:16 kernel: [    3.120312] sd 6:0:0:0: [sdb] 2006528 
512-byte logical blocks: (1.03 GB/980 MiB)
 > Apr 17 01:01:16 kernel: [    3.120785] sd 6:0:0:0: [sdb] Write 
Protect is off
 > Apr 17 01:01:16 kernel: [    3.120790] sd 6:0:0:0: [sdb] Mode Sense: 
03 00 00 00
 > Apr 17 01:01:16 kernel: [    3.121108] sd 6:0:0:0: [sdb] No Caching 
mode page found
 > Apr 17 01:01:16 kernel: [    3.121111] sd 6:0:0:0: [sdb] Assuming 
drive cache: write through
 > Apr 17 01:01:16 kernel: [    3.143895]  sdb: sdb1 sdb2 sdb3
 > Apr 17 01:01:16 kernel: [    3.157941] sd 6:0:0:0: [sdb] Attached 
SCSI removable disk
 > Apr 17 01:02:28 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > Apr 17 01:02:28 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > $
 >
 > $ grep -e sda -e sdb -e nvme /var/log/installer/syslog | sed -e 
'/CD-ROM/{p; q}'
 > Apr 21 18:43:48 kernel: [    4.728919] sd 0:0:0:0: [sda] 117210240 
512-byte logical blocks: (60.0 GB/55.9 GiB)
 > Apr 21 18:43:48 kernel: [    4.781174] sd 0:0:0:0: [sda] Write 
Protect is off
 > Apr 21 18:43:48 kernel: [    4.791354] sd 0:0:0:0: [sda] Mode Sense: 
00 3a 00 00
 > Apr 21 18:43:48 kernel: [    4.853619] sd 0:0:0:0: [sda] Write cache: 
enabled, read cache: enabled, doesn't support DPO or FUA
 > Apr 21 18:43:48 kernel: [    5.284602]  sda: sda1 sda2 sda3 sda4
 > Apr 21 18:43:48 kernel: [    5.320578] sd 0:0:0:0: [sda] Attached 
SCSI disk
 > Apr 21 18:43:48 kernel: [    6.301453] sd 2:0:0:0: [sdb] 2006528 
512-byte logical blocks: (1.03 GB/980 MiB)
 > Apr 21 18:43:48 kernel: [    6.314811] sd 2:0:0:0: [sdb] Write 
Protect is off
 > Apr 21 18:43:48 kernel: [    6.326835] sd 2:0:0:0: [sdb] Mode Sense: 
03 00 00 00
 > Apr 21 18:43:48 kernel: [    6.328822] sd 2:0:0:0: [sdb] No Caching 
mode page found
 > Apr 21 18:43:48 kernel: [    6.340627] sd 2:0:0:0: [sdb] Assuming 
drive cache: write through
 > Apr 21 18:43:48 kernel: [    6.363150]  sdb: sdb1 sdb2 sdb3
 > Apr 21 18:43:48 kernel: [    6.387070] sd 2:0:0:0: [sdb] Attached 
SCSI removable disk
 > Apr 21 18:44:19 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > Apr 21 18:44:19 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sdb1 fstype=iso9660
 > $
 >
 > $ grep -e sda -e sdb -e nvme /var/log/installer/syslog | sed -e 
'/CD-ROM/{p; q}'
 > Dec 13 03:02:14 kernel: [    0.874287] nvme nvme0: pci function 
0000:3d:00.0
 > Dec 13 03:02:14 kernel: [    0.890575] nvme nvme0: 4/0/0 
default/read/poll queues
 > Dec 13 03:02:14 kernel: [    0.892293]  nvme0n1: p1 p2 p3 p4
 > Dec 13 03:02:15 kernel: [    3.106803] sd 0:0:0:0: [sda] 2006528 
512-byte logical blocks: (1.03 GB/980 MiB)
 > Dec 13 03:02:15 kernel: [    3.107444] sd 0:0:0:0: [sda] Write 
Protect is off
 > Dec 13 03:02:15 kernel: [    3.107450] sd 0:0:0:0: [sda] Mode Sense: 
03 00 00 00
 > Dec 13 03:02:15 kernel: [    3.107907] sd 0:0:0:0: [sda] No Caching 
mode page found
 > Dec 13 03:02:15 kernel: [    3.107913] sd 0:0:0:0: [sda] Assuming 
drive cache: write through
 > Dec 13 03:02:15 kernel: [    3.125917]  sda: sda1 sda2
 > Dec 13 03:02:16 kernel: [    3.155962] sd 0:0:0:0: [sda] Attached 
SCSI removable disk
 > Dec 13 03:02:48 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sda1 fstype=iso9660
 > Dec 13 03:02:48 cdrom-detect: CD-ROM mount succeeded: 
device=/dev/sda1 fstype=iso9660
 > $


I am unsure what is obvious about the last three.  Please clarify.


Did you install from a USB flash drive or from optical media?  If 
optical, was the drive internal or external, and what was the interface?


David

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Thread

USB Debian 11 installer and target drive device node [was fstab  problem] David Christensen <dpchrist@holgerdanske.com> - 2022-05-09 20:40 +0200
  Re: USB Debian 11 installer and target drive device node [was fstab problem] "Thomas Schmitt" <scdbackup@gmx.net> - 2022-05-09 21:20 +0200
  Re: USB Debian 11 installer and target drive device node [was fstab  problem] David Wright <deblis@lionunicorn.co.uk> - 2022-05-09 22:00 +0200
    Re: USB Debian 11 installer and target drive device node [was fstab  problem] David Christensen <dpchrist@holgerdanske.com> - 2022-05-10 02:40 +0200

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