Chris, Scrub is still running. When it's done, I'll reboot a couple of times. sdb is in a SIIG 3.0 USB 2x docking station. Could it be NOT passing some device commands? I have sent a query to the developer(s) of smartmontools just in case. Regards, George.. On Saturday, March 6, 2021, 1:36:13 PM PST, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: fdisk says: Disk /dev/sda: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors /dev/sda8 436217856 3907029167 3470811312 1.6T 83 Linux sda8 is 1777055391744 bytes Btrfs says: dev_item.total_bytes 1777055391744 Those agree. The scrub message comes from block/blk-core.c:655: pr_info_ratelimited("attempt to access beyond end of device\n" I don't know why it would be triggered. fdisk says: Disk /dev/sdb: 465.76 GiB, 500107862016 bytes, 976773168 sectors /dev/sdb1 2048 976773167 976771120 465.8G 83 Linux sdb1 is 500106813440 bytes. kernel says: [152968.929912] sdb: p1 size 1465144002 extends beyond EOD, enabling native capacity this is coming from block/partitions/core.c:573: "%s: p%d size %llu extends beyond EOD, ", and block/partitions/core.c:519: printk(KERN_CONT "enabling native capacity\n"); I've got no idea what it's complaining about though. Seems like the kernel and fdisk have very different ideas about how to read this partition map. btrfs says: dev_item.total_bytes 500106813440 The partition map and btrfs have the exact same bytes again, that's good. The only discrepancy here is the kernel's block core is confused about it. I don't know why that would be. Does that EOD message happen on every boot for sdb1? -- Chris Murphy _______________________________________________ test mailing list -- test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to test-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/test@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure