Etienne Dechamps ee5fd0bb80 Set zvol discard_granularity to the volblocksize. ... Currently, zvols have a discard granularity set to 0, which suggests to the upper layer that discard requests of arbirarily small size and alignment can be made efficiently. In practice however, ZFS does not handle unaligned discard requests efficiently: indeed, it is unable to free a part of a block. It will write zeros to the specified range instead, which is both useless and inefficient (see dnode_free_range). With this patch, zvol block devices expose volblocksize as their discard granularity, so the upper layer is aware that it's not supposed to send discard requests smaller than volblocksize. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #862		2012-08-07 14:55:31 -07:00
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.gitignore	Added .gitignore for mount.zfs and zvol_id	2011-04-07 10:28:38 -07:00
Makefile.am	Workaround for failing zvol_id	2012-06-13 11:25:17 -07:00
Makefile.in	Set zvol discard_granularity to the volblocksize.	2012-08-07 14:55:31 -07:00
zvol_id_main.c	Fixes to enable zvol symlink creation	2011-03-24 11:48:18 -07:00