Bug 60191

Summary: Bad flush cache
Product: IO/Storage Reporter: Toni Ballesta (mustelator)
Component: SCSIAssignee: linux-scsi (linux-scsi)
Status: NEW ---    
Severity: normal    
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 3.8.13 Subsystem:
Regression: No Bisected commit-id:

Description Toni Ballesta 2013-06-26 21:45:02 UTC 
Hello to all, I'm Toni and it's my first Kernel bug. I hope help to detect problems on kernels (I'm not developer but yes detector ;))

Ok, and now start.

When I dump image into SD card with IO operations apparently ok, and it continue past 100% (cache flushing) I can see that the writing is not 100% busy time on the output device. The IO monitor show this.

For example, I can show: 100% 1 second, 0% 1 second, 100% 2 seconds, 0% 0,5 seconds...

AND, in some situations, the umount on FAT32 on USB drives sometimes not really umount well, but this is other war.

Cheers!