From nobody Wed Mar 22 06:33:13 2023 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4PhJZK2SQWz3yvXw; Wed, 22 Mar 2023 06:33:13 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4PhJZK1vd6z3xr6; Wed, 22 Mar 2023 06:33:13 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1679466793; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=3aZyLD1WZXMDjg/6tf/ZNX2cG3Zw1lwnCaDKrEtDjr8=; b=HWdLUtpuBYhOlmY5gwHfhsEhZoDOgDAiQVZSCdm7xYuLH7VYfvH+tiru80Es3svCs566KU AoGXsZ5FyOQpzGdOekJE9J76wd5Imm+cg2yRQXf82/N4T0pSRpM+qb5OeqbFUQvdbCcy+6 rT+AcSeqP7UDPPjDx+NuDSOnawpbDGq0yMIkzVczhClGfuk/fcvnV8paGo9UlqqA8yItc6 OByLMSpkU5QkLI8TScTdNYEag0h9bQrq4KQBqPqSDSwQqLAQwFSoYXX4JqFaX1zJUklZH3 zOGffbB+Haldx41vbCWMcHwuRtKu8BFHiaHUE04Wi7HEZrx7gOsMnzbR3aJj5A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1679466793; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=3aZyLD1WZXMDjg/6tf/ZNX2cG3Zw1lwnCaDKrEtDjr8=; b=q9kOZe1oGUBaYd6B92cmTmsQXrWBMEC0b52F7oAwXHZZVP8vxmD8UnwiZShdKpGL9nLvAB IzpPVJdyj2IlV8LI623CqHMPJETQ5Pz44uyOIXWVpNrZCz3aciUGUIPxM49vu//NvsYAfZ oI7kEWE417nSVm2Kflb7xS/8XrRIxx/SfUwxok/T6w4mz2fRR/0oKbOHiQXF4nCiF77YiJ +HFc9FpLojUzdp9bCtOEkd9uyKHUJO6o/M0gG3ICz+DrvbheGtlNF9n2VYjsCZoeABQYm6 BTOvl4I6avwjrH1MgYbLtZQx5BFTIHxP8KqLHQwiYv+TS9Z3oI6/YAsF2pEhng== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1679466793; a=rsa-sha256; cv=none; b=Xhy1PKRQuzMqz+If31W8nhMrAV6tUoCHhWuNr5sKlOz5dxBRGeoyzZungLpRpTp3ySHj+s dKwYGs0FnCPsw5lq05WWJJZxBtqtD9Ki/MfHpng2N4ckLniUo5KK6GnFwRdK5tTV238kqF stI+MjZYp5LndcNVBZvBd1eFSKvzQhb5Uk+lpyHE2RtwFJx8qVl0pE917IRJGySoWDmUL9 k8h4rsDtRDPsYUYSP2QWLDPhPol1Ybv1GyG7VYXkeuh5Oq+bS3l9xbi8tG8lpCh8v719Mx SSkSjwjtzvucHUHGINTgTLgxWp/47Wo7MVLR8Gl+7QB2dVhaEn0ZUC5I22KkoQ== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4PhJZK0xBMzk5d; Wed, 22 Mar 2023 06:33:13 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 32M6XDGn039767; Wed, 22 Mar 2023 06:33:13 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 32M6XDID039766; Wed, 22 Mar 2023 06:33:13 GMT (envelope-from git) Date: Wed, 22 Mar 2023 06:33:13 GMT Message-Id: <202303220633.32M6XDID039766@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Gordon Bergling Subject: git: 33e13e4c921b - releng/13.2 - FFS/UFS snapshots: improve documentation. List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: gbe X-Git-Repository: src X-Git-Refname: refs/heads/releng/13.2 X-Git-Reftype: branch X-Git-Commit: 33e13e4c921be81280c33e9baa8a2c7699776538 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch releng/13.2 has been updated by gbe: URL: https://cgit.FreeBSD.org/src/commit/?id=33e13e4c921be81280c33e9baa8a2c7699776538 commit 33e13e4c921be81280c33e9baa8a2c7699776538 Author: Kirk McKusick AuthorDate: 2023-03-06 05:37:23 +0000 Commit: Gordon Bergling CommitDate: 2023-03-22 06:32:29 +0000 FFS/UFS snapshots: improve documentation. This update provides a more detailed description of FFS/UFS snapshots and adds links to useful man pages. Requested by: Graham Perrin Submitted by: darius-dons.net.au Reviewed by: Ravi Pokala PR: 266358 Differential Revision: https://reviews.freebsd.org/D38817 Approved by: re (gjb) (cherry picked from commit 528d8e55c8d338e78fa4e6c9f182e8975f75199a) --- sbin/mksnap_ffs/mksnap_ffs.8 | 29 +++++++++++++++++++++++------ 1 file changed, 23 insertions(+), 6 deletions(-) diff --git a/sbin/mksnap_ffs/mksnap_ffs.8 b/sbin/mksnap_ffs/mksnap_ffs.8 index 201014522721..658502cffdcb 100644 --- a/sbin/mksnap_ffs/mksnap_ffs.8 +++ b/sbin/mksnap_ffs/mksnap_ffs.8 @@ -32,9 +32,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.\" $FreeBSD$ -.\" -.Dd October 3, 2016 +.Dd March 5, 2023 .Dt MKSNAP_FFS 8 .Os .Sh NAME @@ -48,6 +46,18 @@ The .Nm utility creates a snapshot named .Ar snapshot_name . +This name is a path in the file system being snapshotted. +Typically this is under the +.Pa .snap +directory in the root of the file system, but it can +be anywhere. +Snapshots can be listed using the +.Xr snapinfo 8 +command. +.Pp +After a snapshot is taken it appears as a file. +The file is the size of the file system from which it was taken. +It can be moved, renamed or deleted (which removes the snapshot). .Pp The group ownership of the file is set to .Dq Li operator ; @@ -62,15 +72,22 @@ Create a snapshot of .Pa /usr/home file system and mount the snapshot elsewhere: .Bd -literal -offset indent -mksnap_ffs /usr/home/snapshot -mdconfig -a -t vnode -o readonly -f /usr/home/snapshot +mksnap_ffs /usr/home/.snap/snap1 +mdconfig -a -t vnode -o readonly -f /usr/home/.snap/snap1 mount -o ro /dev/md0 /mnt/ .Ed +.Pp +Delete a snapshot: +.Bd -literal -offset indent +rm /usr/home/.snap/snap1 +.Ed .Sh SEE ALSO +.Xr rm 1 , .Xr chmod 2 , .Xr chown 8 , .Xr mdconfig 8 , -.Xr mount 8 +.Xr mount 8 , +.Xr snapinfo 8 .Sh HISTORY The .Nm