From nobody Mon Mar 20 05:22:32 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 4Pg35h5V7Bz40DHc; Mon, 20 Mar 2023 05:22:32 +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 4Pg35h4xH2z3jvL; Mon, 20 Mar 2023 05:22:32 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1679289752; 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=S/f6gt+DSgE9CCMLpO6qWjhS6my6PsWHjpY0uRXc01E=; b=EXsfG9vnDe79htIJrpzSr4WEwGthY53rbZ7UYnaZ3iFYjAPouMIPs8m+cpc2WrmyJISwlJ fk0EypdDGQ5/rJGaxt7a6vLp/wSbS0q8tOQrJ1Lw596OhYgCXR4rxdn+I9gdfpWKr5/IrB w1T742WlYO/k0mcGU/0NAhROenl8slukXXEO/L7gU026r2y8oP+KjzsHseN6NC8Bnv2eqa R0pZz9U9V0LFkF7fUGtEUe0wNNAENX89s+F674J3KymweimYMP+3pMZ4kHfvl/koa39InY qO/dZxDmzL8cc5zUEC0eqOboOJEtkd37wkJjPXWFJL5rB8XuJuMhXmi9wX12yg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1679289752; 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=S/f6gt+DSgE9CCMLpO6qWjhS6my6PsWHjpY0uRXc01E=; b=bn/SlSdQxFzePIImIRL7nEmhFyKbzKj4F6X/H5p1HEG3J4ulP36IbE15oVokqHmzDeFGzf HtuxGEoHBwxL4Qq6GUrojmBjMnRR4ARZa5Nm0oESDYgrC/4eQcphPcXRDLRvdKMLTpGDJj erNKy+xKyyUlhhpIkLRQVZR3pkhU/FU/7QqyF9071lEDQUIL09EY2Kazgnr9oXp+cLtsG3 33jHK0uchPmJzr1kWfmBn9M14GUVyGeLTNMOr9MsBFeqI1Yz26/gsVyFZNDnYxSiUpBX8C vU28Adl0Cb0FFbtOmv/NrYNdT7y9FufyjegUiNV4vVIyikAgfCpmDkD8M/x+9Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1679289752; a=rsa-sha256; cv=none; b=UUfoAHSbARGt2gvK6USEcCF6W1ukhh8uy37Vl3eEK2n6BID0iCpZ09cY3g3KtLOOIzVvAQ HrqLhKnPuq63tiH1edUJlUScyf7zf3UBhF7yXwYdtqsgnOkvKfHGj6JWiZiIo1YIfYyiwd Xw8h7FDlr8ZupKXthdkWl7PcyJBUAlfdnCFJ+zApo4I/+WKdQ4MyoT1MJQtFZu/oCL+B6B ti98kjsI9qi4z9ArzMuF1thpB/HT2SCjEIo57rCc0ulri1KSzrnGge8ki40GEh+ULvjD+p fWAbzqregF4i9J4sgi3C0y+3SNYcCRRzKqNBd+rh6NQNybKmlDr3m/g4hhyYHg== 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 4Pg35h40N7zHB0; Mon, 20 Mar 2023 05:22:32 +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 32K5MWxg068834; Mon, 20 Mar 2023 05:22:32 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 32K5MWKR068833; Mon, 20 Mar 2023 05:22:32 GMT (envelope-from git) Date: Mon, 20 Mar 2023 05:22:32 GMT Message-Id: <202303200522.32K5MWKR068833@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Kirk McKusick Subject: git: 24ed6ac44549 - stable/13 - 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: mckusick X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 24ed6ac445497ce2489c7be1723462030eef47d4 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by mckusick: URL: https://cgit.FreeBSD.org/src/commit/?id=24ed6ac445497ce2489c7be1723462030eef47d4 commit 24ed6ac445497ce2489c7be1723462030eef47d4 Author: Kirk McKusick AuthorDate: 2023-03-06 05:37:23 +0000 Commit: Kirk McKusick CommitDate: 2023-03-20 05:22:06 +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 (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