[sheepdog] [PATCH 2/2] sheepdog: refine discard support

Vasiliy Tolstov v.tolstov at selfip.ru
Wed Sep 2 14:36:46 CEST 2015

2015-09-01 6:03 GMT+03:00 Hitoshi Mitake <mitake.hitoshi at lab.ntt.co.jp>:
> This patch refines discard support of the sheepdog driver. The
> existing discard mechanism was implemented on SD_OP_DISCARD_OBJ, which
> was introduced before fine grained reference counting on newer
> sheepdog. It doesn't care about relations of snapshots and clones and
> discards objects unconditionally.
> With this patch, the driver just updates an inode object for updating
> reference. Removing the object is done in sheep process side.
> Cc: Teruaki Ishizaki <ishizaki.teruaki at lab.ntt.co.jp>
> Cc: Vasiliy Tolstov <v.tolstov at selfip.ru>
> Cc: Jeff Cody <jcody at redhat.com>
> Signed-off-by: Hitoshi Mitake <mitake.hitoshi at lab.ntt.co.jp>

I'm test this patch and now discard working properly and no errors in
sheepdog log file.

Tested-by: Vasiliy Tolstov <v.tolstov at selfip.ru>

Vasiliy Tolstov,
e-mail: v.tolstov at selfip.ru

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