Re: UAS error optimal I/O size is obscene

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Stephen,

>>     > Sector size (logical/physical): 512 bytes / 512 bytes
>>     > I/O size (minimum/optimal): 4096 bytes / *33553920* bytes

> [    0.000000] Linux version 5.4.0-144-generic (buildd@lcy02-amd64-089) (gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1)) #161-Ubuntu SMP Fri Feb 3 14:49:04 UTC 2023 (Ubuntu 5.4.0-144.161-generic 5.4.229)

This issue was (hopefully) addressed by 631669a256f9 ("scsi: sd: Optimal
I/O size should be a multiple of reported granularity") which was merged
in 5.19.

-- 
Martin K. Petersen	Oracle Linux Engineering



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