From nobody Thu Nov 06 16:44:48 2025 X-Original-To: dev-commits-src-branches@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 4d2Shx1PJNz656Mr; Thu, 06 Nov 2025 16:44:49 +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 4d2Shx0kc2z3Glf; Thu, 06 Nov 2025 16:44:49 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1762447489; 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=osbQpqiO0yOgXraJihdSbjbpkBa3I4xi7tq4/hL74N4=; b=C8z58FHw+QQImSwWhpa7anfuOtYbv1IrZZnbRw4A9k80mXYnIYFVbn/PqMS/k7MFiPJg+w 8PoV+5263yeD06gJpgprHRUrsOEtMxOiQP6lex3u7oII+s/wLCrIKBBhjNw5M2GDYeo8Im YqaBh7xsHPkzoAoyPjTC+XiYMJSiRBL/EZTap4yz6VyyiSOErADGqRBx0hMN8FlodBrp9Q H+ZgEgVbie13f3Bh7ha8AAuNjky2/mAx1IZwrt9UMiH6zBP37CrJ3LFadT6vTMWwquCGIy ISW3jPjK2lkGDhzddPb4JCOt68aT+4UJQHW9Z01mKobGXR/7Ri2+4E6fBCLMSw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1762447489; 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=osbQpqiO0yOgXraJihdSbjbpkBa3I4xi7tq4/hL74N4=; b=GheZaXYL1SNdKAcFrCPT0ZC9xYA5FDtraNA/tHEaTcUn3zGqSlRBRGfEaHFcio17qDb8tx sv2M4dtuSl0pd1j/CM5BJU5ABFLeIPa0nM0wE1K7tMj4CMmXKyX0nNkYdtMwMFS0xrpnww gVeauFJnMUlzsqCTjZrfIzsQtKjXLCQ8bJAbUz4Gqc3lVnQfV8b+pPY9qymv+0UBeUiYmf m6CM5Vo54fbzC98SKkmsqqwN7Uvhr+vKd1+fBq73/CHpB+3O+Se7omK/5sjBcoMXxpoYEo aNRdCLnsFTb0Lpi76OUzwhyeg5E9HLNGNYPVNZowIQRPBcuhGn3M3JcGGWefHg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1762447489; a=rsa-sha256; cv=none; b=JzVPD96Z/LUFZ6VHXbz4NZKHbu4h3PHth+GacC6KORQoleN+qQF2st8eN/YFimh9ksmK3s h825QSGOBPhMy9yvXLZ6yLFZ2v7HwJbXBceJj9ArkhnVwOorc5z0r2Wr54M4I5Oy4T+2lk 5JfFC3AoXtC8HcI5+AVrGChuRJ+82ud6b0uMKqM/CSLNRlvOW276JKsKZHB0V/t3pOZ1Rk XxXpNQoeU7wrW/48ubuCeM2N13kLN8++DYcJRD8KI3mmEKqdKBl2YfjMHtYTXa9r+jd6sy +HDk7ERTINO0TsYJvM4ybF47c/ysrhjioTdfA235amevMCHsbeMb0KrpD/eUbQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none 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 4d2Shx059Tz5Qx; Thu, 06 Nov 2025 16:44:49 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.18.1/8.18.1) with ESMTP id 5A6GimTS076363; Thu, 6 Nov 2025 16:44:48 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.18.1/8.18.1/Submit) id 5A6GimPT076360; Thu, 6 Nov 2025 16:44:48 GMT (envelope-from git) Date: Thu, 6 Nov 2025 16:44:48 GMT Message-Id: <202511061644.5A6GimPT076360@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Alexander Ziaee Subject: git: 7c8717183536 - stable/14 - dumpon(8): Add a SYSCTL VARIABLES section List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: ziaee X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: 7c8717183536b99f455d6fefefb762f1d7e6f030 Auto-Submitted: auto-generated The branch stable/14 has been updated by ziaee: URL: https://cgit.FreeBSD.org/src/commit/?id=7c8717183536b99f455d6fefefb762f1d7e6f030 commit 7c8717183536b99f455d6fefefb762f1d7e6f030 Author: Felix Johnson AuthorDate: 2025-11-06 16:32:42 +0000 Commit: Alexander Ziaee CommitDate: 2025-11-06 16:43:43 +0000 dumpon(8): Add a SYSCTL VARIABLES section Document debug.minidump and machdep.dump_retry_count sysctl variables. PR: 259393 MFC after: 3 seconds Reviewed by: gbe (previous), markj, ziaee Differential Revision: https://reviews.freebsd.org/D32618 (cherry picked from commit 850841edf6c0867a170d2637f3dacfda33d5f3dd) --- sbin/dumpon/dumpon.8 | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/sbin/dumpon/dumpon.8 b/sbin/dumpon/dumpon.8 index 59d199a2de17..b607f8717ff9 100644 --- a/sbin/dumpon/dumpon.8 +++ b/sbin/dumpon/dumpon.8 @@ -230,6 +230,20 @@ total amount of physical memory as reported by the .Va hw.physmem .Xr sysctl 8 variable. +.Sh SYSCTL VARIABLES +The following +.Xr sysctl 8 +variables can be used to modify or monitor the behavior of crash dumps: +.Bl -tag -width "machdep.dump_retry_count" +.It Va debug.minidump +Set the type of kernel crash dump. +Possible values are 0 for a full crash dump or 1 for a minidump. +The default is minidump. +.It Va machdep.dump_retry_count +The maximum number of times dump will retry before giving up. +The default value is 5. +This sysctl is only supported on PowerPC and AMD64. +.El .Sh IMPLEMENTATION NOTES Because the file system layer is already dead by the time a crash dump is taken, it is not possible to send crash dumps directly to a file. @@ -379,6 +393,7 @@ needed. .Xr loader 8 , .Xr rc 8 , .Xr savecore 8 , +.Xr sysctl 8 , .Xr swapon 8 , .Xr panic 9 .Sh HISTORY