From owner-freebsd-bugs@freebsd.org Sat Oct 14 21:28:07 2017 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 208A2E2D085 for ; Sat, 14 Oct 2017 21:28:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 0EF0D80E66 for ; Sat, 14 Oct 2017 21:28:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v9ELS6cX016182 for ; Sat, 14 Oct 2017 21:28:06 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 223015] [tmpfs] tmpfs does not support sparse files Date: Sat, 14 Oct 2017 21:28:06 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: kwhite@site.uottawa.ca X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Oct 2017 21:28:07 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223015 Bug ID: 223015 Summary: [tmpfs] tmpfs does not support sparse files Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: kwhite@site.uottawa.ca When attempting to create a large sparse file on a tmpfs file system, I get this message: "truncate: ... No space left on device" It appears to work on a similarly sized mfs file system. ...keith Sample test script output: # sh t_tmpfs =3D=3D=3D tmpfs =3D=3D=3D truncate: /tmp/_trunc_/sparse: No space left on device 0 -rw-r--r-- 1 root wheel 0 Oct 14 17:24 /tmp/_trunc_/sparse =3D=3D=3D mfs =3D=3D=3D 96 -rw-r--r-- 1 root wheel 2147483648 Oct 14 17:24 /tmp/_trunc_/sparse Test script follows: #!/bin/sh # DIR=3D/tmp/_trunc_ TUNIT=3D101 TFILE=3Dsparse SSIZE=3D16m TSIZE=3D2g exec 2>&1 mkdir $DIR || exit 1 echo "=3D=3D=3D tmpfs =3D=3D=3D" mount -t tmpfs -osize=3D$SSIZE /tmp $DIR truncate -s$TSIZE $DIR/$TFILE ls -ls $DIR/$TFILE umount $DIR echo "=3D=3D=3D mfs =3D=3D=3D" mount -t mfs -o-s=3D$SSIZE md$TUNIT $DIR truncate -s$TSIZE $DIR/$TFILE ls -ls $DIR/$TFILE umount $DIR mdconfig -du $TUNIT rmdir $DIR exit 0 --=20 You are receiving this mail because: You are the assignee for the bug.=