On 2/25/2025 4:33 PM, Milan Broz wrote: > Sure, it is formatted to 4k data + 64 bytes metadata profile: > > # nvme id-ns -H /dev/nvme0n1 > ... > > LBA Format 0 : Metadata Size: 0 bytes - Data Size: 512 bytes - > Relative Performance: 0 Best > LBA Format 1 : Metadata Size: 8 bytes - Data Size: 512 bytes - > Relative Performance: 0 Best > LBA Format 2 : Metadata Size: 0 bytes - Data Size: 4096 bytes - > Relative Performance: 0 Best > LBA Format 3 : Metadata Size: 64 bytes - Data Size: 4096 bytes - > Relative Performance: 0 Best (in use) > > formatted with > # nvme format --lbaf=3 --force /dev/nvme0n1 Since you're not passing "--pi=[1-3]", it takes 0 as default, which means protection-info is off.