freebsd-nq/cmd
Troels Nørgaard 94370f5955 Default ashift for Amazon EC2 NVMe devices
Add a default 4 KiB ashift for Amazon EC2 NVMe devices on instances with
NVMe ephemeral devices, such as the types c5d, f1, i3 and m5d.
As per the official documentation [1] a 4096 byte blocksize should be
used to match the underlying hardware.

The string was identified via:

$ sudo sginfo -M /dev/nvme0n1
INQUIRY response (cmd: 0x12)
----------------------------
Device Type                        0
Vendor:                    NVMe
Product:                   Amazon EC2 NVMe
Revision level:

$ lsblk -io KNAME,TYPE,SIZE,MODEL
KNAME   TYPE    SIZE MODEL
nvme0n1 disk  442.4G Amazon EC2 NVMe Instance Storage

[1] https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/
    storage-optimized-instances.html
    Retrived 2018-07-03

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Troels Nørgaard <tnn@tradeshift.com>
Closes #7676
2018-07-06 16:15:19 -07:00
..
arc_summary Add Python 3 rewrite of arc_summary.py 2018-02-28 08:52:34 -08:00
arcstat Fix some typos 2018-02-28 08:57:10 -08:00
dbufstat Fix some typos 2018-02-28 08:57:10 -08:00
fsck_zfs Add /sbin/fsck.zfs helper 2013-01-09 16:54:58 -08:00
mount_zfs Update build system and packaging 2018-05-29 16:00:33 -07:00
raidz_test Support -fsanitize=address with --enable-asan 2018-01-10 10:49:27 -08:00
vdev_id vdev_id: new slot type ses 2017-12-20 09:42:07 -08:00
zdb OpenZFS 9238 - ZFS Spacemap Encoding V2 2018-07-05 12:02:34 -07:00
zed Fix typo in comment, handeling->handling 2018-06-18 21:51:06 -07:00
zfs Add tunables for channel programs 2018-06-15 15:10:42 -07:00
zgenhostid Add zgenhostid utility script 2017-07-25 13:22:03 -04:00
zhack Project Quota on ZFS 2018-02-13 14:54:54 -08:00
zinject Add support for decryption faults in zinject 2018-05-02 15:36:20 -07:00
zpool Default ashift for Amazon EC2 NVMe devices 2018-07-06 16:15:19 -07:00
zstreamdump Fix issues with raw sends of spill blocks 2018-04-17 11:19:03 -07:00
ztest OpenZFS 9238 - ZFS Spacemap Encoding V2 2018-07-05 12:02:34 -07:00
zvol_id Fedora 28: Fix misc bounds check compiler warnings 2018-04-04 10:16:47 -07:00
Makefile.am Retire legacy test infrastructure 2017-08-15 17:26:38 -07:00