From nobody Tue Dec 9 14:53:37 2025 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 4dQhgP1bBzz6Kkrj for ; Tue, 09 Dec 2025 14:53:37 +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 "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4dQhgP0cz8z3pPw for ; Tue, 09 Dec 2025 14:53:37 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1765292017; 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/lcaf0+JrVW6kMKK7qc2f/bozDauF5Xwj/OB4N3mBs=; b=T4/O09toXtNsmYKaczQEntOpQoyLIuieoSdLqR1GTIW/DtGiISEU+c0vHFdlyd232C1UkY i2jDl4GgMZJqcm4ujl1M7yxMTGmLKA//onf0uMd5FsHeLCz6n7tB1PIaC7fehXCOQ0tm09 F/eshz9m3KPtdUrDJlPlWn6uoVGh+I/nHqHTsTd7zEVNtZMFfEQRRxSdNLiFVUnSvNEIx6 crqYc561SRBZF8u9LfHYRsvqQyxfwrD8zbY1iBgP8zhcKboSLA8jVX7cv4pcL12bj8kxwK UYXSI89BGSb2ZK4EQrMptafTeCiLoZoMDtQbzudRpJVcGDO6KqQ1ElEAJX1aYg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1765292017; 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/lcaf0+JrVW6kMKK7qc2f/bozDauF5Xwj/OB4N3mBs=; b=LVm94Cf9dGMPq0VTZHOf21owrZqnYqpPClViQh0KMlk+zHB03gluj9frSfedNRwIz11tBL sPNrLABbCNoBIJoineDRxd/H27LP9aEc4f4FP5C1aDxpm8tWX+iuL8NB5waY/wWHGgOgI2 NrSa2Hi4UgBspW6Qt+mfuT21fDL03bFDPiZo6gcJNVyYQaHXFbhj8qrwumF+KfvNYGz/zz bBwkL7vjmSTNAuGtSq0KtmYy5rkttEqE+31hsts4hGakRYLqudjabXfvjUGkvQdoF0Ze+3 379U8nmn/TqsRS5qZi/97+jWjYA4/v+8UXcMeYQcXNQB5mxxTDfHjNaiUxNOuw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1765292017; a=rsa-sha256; cv=none; b=wJQMCb0X8pO0ZfTvnS4kDrmLeFKq8YEO7V22WztQ1Y3jPX5Ofmle6r0jGQL/wxV/bSCODM YfW2BIUgLVtLp8gnFBhT6AmGFKOhiiGzRSgpfYRofGBw9g9s7dLwMZwPbfHAQ77tfiMYPq oekGIQ2GsnmlCGu6cY7XmxdZ384fcR1pLozGoOukyEhN5KTAFxykSWhT0vMJhx5incC37R Rf8nVWHi/jeUTl1anYjXFDvpYOG7FgxSMvE96l1fyMTPx4rPr7Mw4+QFHQ3+i3B0VinZkZ NQN1bdcg2EgMdf/FzRobG4OW4nN/IRbnY5ik3BRUG1Qb8QUVSTOsvY0gLSjj5A== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4dQhgP06HNz137q for ; Tue, 09 Dec 2025 14:53:37 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 2fa7a by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Tue, 09 Dec 2025 14:53:37 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Eugene Grosbein Subject: git: dbc4a1c69191 - main - trim.8: minor update for manual page 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: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: eugen X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: dbc4a1c69191909a7210cad6da46b755557d0d34 Auto-Submitted: auto-generated Date: Tue, 09 Dec 2025 14:53:37 +0000 Message-Id: <693837f1.2fa7a.12451ad8@gitrepo.freebsd.org> The branch main has been updated by eugen: URL: https://cgit.FreeBSD.org/src/commit/?id=dbc4a1c69191909a7210cad6da46b755557d0d34 commit dbc4a1c69191909a7210cad6da46b755557d0d34 Author: Eugene Grosbein AuthorDate: 2025-12-09 14:47:26 +0000 Commit: Eugene Grosbein CommitDate: 2025-12-09 14:47:26 +0000 trim.8: minor update for manual page Further explain that trim(8) is not for trimming free blocks in populated file systems/ZFS pools, as people still take it wrong sometimes. MFc after: 1 week --- usr.sbin/trim/trim.8 | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/usr.sbin/trim/trim.8 b/usr.sbin/trim/trim.8 index eef369703715..7c8f3b36d520 100644 --- a/usr.sbin/trim/trim.8 +++ b/usr.sbin/trim/trim.8 @@ -23,7 +23,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd October 1, 2025 +.Dd December 9, 2025 .Dt TRIM 8 .Os .Sh NAME @@ -51,11 +51,21 @@ utility erases specified region of the device. It is mostly relevant for a storage that implements trim (like flash based, or thinly provisioned storage). .Sy All erased data is lost. -Alternatively, refer to the +.Pp +The +.Nm +utility should not be used upon mounted file system or active devices +being a part of imported ZFS pool or other software RAID, and the kernel +does not permit such usage generally. +If used upon not mounted file system +of inactive device, the +.Nm +utility erases blocks non-selectively, whether a block is occupied or not. +Refer to the .Xr fsck_ffs 8 command having a flag .Fl E -to trim populated UFS, and to the +to trim free blocks inside populated UFS, and to the .Xr zpool-trim 8 command to trim existing ZFS pool. .Pp