unusually long boot process (no replies)

Hello Bodhi,

I'm using a few Samsung GoFlexNet for years using the jessie based rootfs.

Devices are booting by loading uImage, uInitrd and the DTB-file from an usb flashdisk
[ U-Boot 2017.07-tld-1 (Sep 05 2017 - 00:17:19 -0700) ] and switches to HDD (LVM
on LUKS).

At the beginning of this year I decided to switch the GoFlexNet to the buster based rootfs.

The previous (jessie-based) constellation worked like a charm

Now there are problems now after uBoot has smoothly loaded linux image, ramdisk
and dtb-file and control goes to the linux kernel.

dmesg shows endless sequences of these:

...
[ 1349.955698]  sdb: sdb1
[ 1350.683343] usb 1-1: reset high-speed USB device number 2 using orion-ehci
[ 1350.886601] sd 2:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK cmd_age=0s
[ 1350.896637] sd 2:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 e8 cc 50 00 00 20 00
[ 1350.904742] blk_update_request: I/O error, dev sdb, sector 15256656 op 0x0:(READ) flags 0x80700 phys_seg 3 prio class 0
[ 1350.918145] sd 2:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
[ 1350.928178] sd 2:0:0:0: [sdb] tag#0 Sense Key : Unit Attention [current] 
[ 1350.935775] sd 2:0:0:0: [sdb] tag#0 Add. Sense: Not ready to ready change, medium may have changed
[ 1350.945540] sd 2:0:0:0: [sdb] tag#0 CDB: Read(10) 28 00 00 e8 cc 78 00 00 88 00
[ 1350.953640] blk_update_request: I/O error, dev sdb, sector 15256696 op 0x0:(READ) flags 0x80700 phys_seg 9 prio class 0
[ 1350.965644] sd 2:0:0:0: [sdb] tag#0 device offline or changed
[ 1350.972160] blk_update_request: I/O error, dev sdb, sector 15256656 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 1350.983840] Buffer I/O error on dev sdb, logical block 1907082, async page read
...

but finally the system comes up and work as expected. This takes about 12 to
15 minutes.

The old jessie based constellation was up in about 1 to 2 minutes.

There hasn't been changed anything regarding the hardware. Especially the
USB flashdisk used is the same.

Do you have have any hint solving this ?

Thanks in advance,

Joe