Date: Wed, 18 Nov 2015 08:15:18 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 204641] 10.2 UNMAP/TRIM not available on a zfs zpool that uses iSCSI disks, backed on a zpool file target Message-ID: <bug-204641-8-GyxRFelvkK@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-204641-8@https.bugs.freebsd.org/bugzilla/> References: <bug-204641-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204641 Alexander Motin <mav@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mav@FreeBSD.org Assignee|freebsd-bugs@FreeBSD.org |mav@FreeBSD.org --- Comment #1 from Alexander Motin <mav@FreeBSD.org> --- Are your iSCSI LUNs backed by regular files or ZVOLs? I am asking because FreeBSD simply has no API to punch hole in existing file, that is why UNMAP simply can not work for file-backend LUNs, and so it is automatically disabled. CTL supports UNMAP for all other cases: ZVOLs in both device and file modes and raw devices. -- You are receiving this mail because: You are the assignee for the bug.
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