Messages in this thread | | | Date | Tue, 2 Apr 2024 14:26:17 +0200 | From | Christoph Hellwig <> | Subject | Re: [RFC 0/9] block: add llseek(SEEK_HOLE/SEEK_DATA) support |
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On Thu, Mar 28, 2024 at 04:39:01PM -0400, Stefan Hajnoczi wrote: > In the block device world there are similar concepts to holes: > - SCSI has Logical Block Provisioning where the "mapped" state would be > considered data and other states would be considered holes.
But for SCSI (and ATA and NVMe) unmapped/delallocated/etc blocks do not have to return zeroes. They could also return some other initialization pattern pattern. So they are (unfortunately) not a 1:1 mapping to holes in sparse files.
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