Hello list,
I don't really understand this disk cache thing.
Suppose a disk with write cache enabled of writeback type: Linux
receives a write completed notification (a message from the disk) when
the data has reached the cache of the disk. Correct? At that point it is
not considered an in-flight I/O anymore. Correct?
So what happens when the disk tries to write it to the platter and
discovers that there is a media error on that sector? (suppose
relocation does not happen ; maybe sectors exhausted)
Does Linux receive the write error upon the next flush it issues? So the
error is related to the flush? And what happens if Linux never issues
such flush?
Thank you
J.
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
