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A comment on XFS online filesystem check and repair. Parent comment

Re:XFS online filesystem check and repair by postmodest on Monday July 10, 2023 @09:49PM (#36675532)
On spinning rust, it had guaranteed bandwidth and multiple I/O.

On NVME? Not really.

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Re:XFS online filesystem check and repair by jeffbee on Monday July 10, 2023 @10:26PM (#36675736)
On Linux, XFS never offered guaranteed-rate I/O. It was really an IRIX feature that also required hardware support.
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Re:XFS online filesystem check and repair by T3OU-736 on Monday July 10, 2023 @11:13PM (#36676018)
Fun story.

GRIO (Guaranteed Rate IO) XFS support was added to IRIX due to a request by a US Gov't agency. This agency was doing electronic signal collection with IRIX on SGI HW, and wanted to a way to guarantee that whatever their sensors captured would be written to the storage media, no matter what else is going on at the OS level.

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