Hey all, We've been running into the issue where lblk -O outputs the wwn instead of the serial for scsi devices. After some debugging I've come to the conclusing that /lib/udev/scsi_id is the underlying cause. It outputs the wwn of a disk in the ID_SERIAL_SHORT field, but does also export the actual serial in a separate field (ID_SCSI_SERIAL).
sample output during udevadm test: IMPORT 'scsi_id --export --whitelisted -d /dev/sdas' /lib/udev/rules.d/60-persistent-storage.rules:50 starting 'scsi_id --export --whitelisted -d /dev/sdas' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_SCSI=1' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_VENDOR=HGST' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_VENDOR_ENC=HGST\x20\x20\x20\x20' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_MODEL=HUS726060ALS640' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_MODEL_ENC=HUS726060ALS640\x20' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_REVISION=A280' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_TYPE=disk' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_SERIAL=35000cca232ab84ac' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_SERIAL_SHORT=5000cca232ab84ac' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_WWN=0x5000cca232ab84ac' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_WWN_WITH_EXTENSION=0x5000cca232ab84ac' 'scsi_id --export --whitelisted -d /dev/sdas'(out) 'ID_SCSI_SERIAL= 1EK1A65J' ata devices to not have this issue because they use ata_id: IMPORT 'ata_id --export /dev/sdad' /lib/udev/rules.d/60-persistent-storage.rules:38 starting 'ata_id --export /dev/sdad' 'ata_id --export /dev/sdad'(out) 'ID_ATA=1' 'ata_id --export /dev/sdad'(out) 'ID_TYPE=disk' 'ata_id --export /dev/sdad'(out) 'ID_BUS=ata' 'ata_id --export /dev/sdad'(out) 'ID_MODEL=HGST_HDN726060ALE614' 'ata_id --export /dev/sdad'(out) 'ID_MODEL_ENC=HGST\x20HDN726060ALE614\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20' 'ata_id --export /dev/sdad'(out) 'ID_REVISION=APGNW7JH' 'ata_id --export /dev/sdad'(out) 'ID_SERIAL=HGST_HDN726060ALE614_NAHTWX0X' 'ata_id --export /dev/sdad'(out) 'ID_SERIAL_SHORT=NAHTWX0X' <snip> 'ata_id --export /dev/sdad'(out) 'ID_WWN=0x5000cca242d96928' 'ata_id --export /dev/sdad'(out) 'ID_WWN_WITH_EXTENSION=0x5000cca242d96928' I am unsure if the fix should be in udev or lsblk, but I wanted to bring it up for discussion because the serial not being displayed properly. Kind regards, Sven Wiltink
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