Comment 6 for bug 363038

<mdz> pgraner: do I understand correctly that:
 - when it drops to the (initramfs) prompt, there is only sda in /sys/block
 - you run udevadm trigger && udevadm settle, and there is still only sda
 - you plug in a second USB stick, and then you get sdb
 ?
<pgraner> mdz: yes, exactly

Furthermore, pgraner confirms that once he plugs in the second USB stick, *both* the original stick (the one booted from) and the second one (inserted later) are detected at the same time. So it seems that the USB stick isn't coldplugged correctly, but when a second one is hotplugged, that gets it going. usb-storage is not loaded until the second stick is inserted.

[ 103.828099] usb 1-2: new high speed USB device using ehci_hcd and address 5
[ 103.962559] usb 1-2: configuration #1 chosen from 1 choice
[ 103.970424] Initializing USB Mass Storage driver...
[ 103.973192] scsi2 : SCSI emulation for USB Mass Storage devices
[ 103.975094] usb-storage: device found at 2
[ 103.975149] usb-storage: waiting for device to settle before scanning
[ 103.976986] scsi3 : SCSI emulation for USB Mass Storage devices
[ 103.977597] usbcore: registered new interface driver usb-storage
[ 103.977654] USB Mass Storage support registered.
[ 103.977828] usb-storage: device found at 5
[ 103.977878] usb-storage: waiting for device to settle before scanning
[ 108.972248] usb-storage: device scan complete
[ 108.973520] scsi 2:0:0:0: Direct-Access LEXAR JD FIREFLY 1100 PQ: 0 ANSI: 0 CCS
[ 108.975411] sd 2:0:0:0: [sdb] 7928832 512-byte hardware sectors: (4.05 GB/3.78 GiB)
[ 108.976474] sd 2:0:0:0: [sdb] Write Protect is off
[ 108.976533] sd 2:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 108.976585] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 108.977441] usb-storage: device scan complete
[ 108.977994] scsi 3:0:0:0: Direct-Access SanDisk U3 Cruzer Micro 2.18 PQ: 0 ANSI: 2
[ 108.980234] sd 2:0:0:0: [sdb] 7928832 512-byte hardware sectors: (4.05 GB/3.78 GiB)
[ 108.981226] sd 2:0:0:0: [sdb] Write Protect is off
[ 108.981293] sd 2:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 108.981349] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 108.981405] sdb: sdb1
[ 108.982761] sd 2:0:0:0: [sdb] Attached SCSI removable disk
[ 108.982909] sd 2:0:0:0: Attached scsi generic sg1 type 0
[ 108.986475] sd 3:0:0:0: [sdc] 2006673 512-byte hardware sectors: (1.02 GB/979 MiB)
[ 108.987084] sd 3:0:0:0: [sdc] Write Protect is off
[ 108.987140] sd 3:0:0:0: [sdc] Mode Sense: 03 00 00 00
[ 108.987193] sd 3:0:0:0: [sdc] Assuming drive cache: write through
[ 108.988841] sd 3:0:0:0: [sdc] 2006673 512-byte hardware sectors: (1.02 GB/979 MiB)
[ 108.989464] sd 3:0:0:0: [sdc] Write Protect is off
[ 108.989519] sd 3:0:0:0: [sdc] Mode Sense: 03 00 00 00
[ 108.989571] sd 3:0:0:0: [sdc] Assuming drive cache: write through
[ 108.989627] sdc: sdc1
[ 108.994009] sd 3:0:0:0: [sdc] Attached SCSI removable disk
[ 108.994155] sd 3:0:0:0: Attached scsi generic sg2 type 0