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** Attachment added: "Suggested patch for the fix."
https://bugs.launchpad.net/bugs/1689946/+attachment/4874889/+files/0001-blk-mq-NVMe-512B-4K-T10-DIF-DIX-format-returns-I-O-e.patch
** Changed in: ubuntu
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1689946
Title:
Ubuntu16.04: NVMe 4K+T10 DIF/DIX format returns I/O error on dd with
split op
Status in linux package in Ubuntu:
New
Bug description:
==== State: Open by: mdate on 19 March 2017 12:33:34 ====
On a Bolt adapter in a system with Ubuntu 16.04, I've formatted the
Bolt for T10 and am using it to do a dd with a 2M block size.
Here are the commands:
nvme format /dev/nvme0n1 --lbaf=1 --pil=0 --ms=0 --pi=2
dd if=/dev/urandom of=/dev/nvme0n1 bs=2M oflag=direct count=1
I get an error on the dd.
root@x1623bp1:~# dd if=/dev/urandom of=/dev/nvme0n1 bs=2M oflag=direct
count=1
dd: error writing '/dev/nvme0n1': Input/output error
1+0 records in
0+0 records out
0 bytes copied, 0.0525061 s, 0.0 kB/s
dmesg shows:
[589997.985151] blk_update_request: I/O error, dev nvme0n1, sector 0
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