[illumos-Discuss] Heads up: iSCSI UNMAP support

Joerg Goltermann jg at osn.de
Sun Mar 6 14:59:02 PST 2011


Hi Dan,

On 05.03.2011 00:21, Dan McDonald wrote:
> The Illumos gate now has support for the UNMAP operation for iSCSI if the backing store is a ZFS zvol (raw/character device).  If your filesystem supports UNMAP (e.g. -o discrard with Linux EXT4), you'll see space reclamation on the zvol.

good job, is WRITE_SAME functional too? I saw some bits in the
commit, but I'm not sure about it.

 - Joerg
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