cache sync on block device.
shonnur at chelsio.com
Mon Mar 4 17:27:04 UTC 2013
I want to implementing cache sync functionality for a block device. I referred to CTL code, below link says
" If you use a block device (like a zvol) as the backing store, you'll want
to disable sending cache syncs to the disk, since that will trigger a GEOM
ctladm realsync off"
How is cache sync (flush) implemented for a block device ? bio_cmd=BIO_FLUSH results in ASSERT.
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