18fae3551SRodney W. Grimes.\" Copyright (c) 1980, 1991, 1993 28fae3551SRodney W. Grimes.\" The Regents of the University of California. All rights reserved. 38fae3551SRodney W. Grimes.\" 48fae3551SRodney W. Grimes.\" Redistribution and use in source and binary forms, with or without 58fae3551SRodney W. Grimes.\" modification, are permitted provided that the following conditions 68fae3551SRodney W. Grimes.\" are met: 78fae3551SRodney W. Grimes.\" 1. Redistributions of source code must retain the above copyright 88fae3551SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer. 98fae3551SRodney W. Grimes.\" 2. Redistributions in binary form must reproduce the above copyright 108fae3551SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer in the 118fae3551SRodney W. Grimes.\" documentation and/or other materials provided with the distribution. 128fae3551SRodney W. Grimes.\" 4. Neither the name of the University nor the names of its contributors 138fae3551SRodney W. Grimes.\" may be used to endorse or promote products derived from this software 148fae3551SRodney W. Grimes.\" without specific prior written permission. 158fae3551SRodney W. Grimes.\" 168fae3551SRodney W. Grimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 178fae3551SRodney W. Grimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 188fae3551SRodney W. Grimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 198fae3551SRodney W. Grimes.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 208fae3551SRodney W. Grimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 218fae3551SRodney W. Grimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 228fae3551SRodney W. Grimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 238fae3551SRodney W. Grimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 248fae3551SRodney W. Grimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 258fae3551SRodney W. Grimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 268fae3551SRodney W. Grimes.\" SUCH DAMAGE. 278fae3551SRodney W. Grimes.\" 284be4929cSGarrett Wollman.\" From: @(#)savecore.8 8.1 (Berkeley) 6/5/93 297f3dea24SPeter Wemm.\" $FreeBSD$ 308fae3551SRodney W. Grimes.\" 31138f7e4bSTom Rhodes.Dd December 24, 2008 328fae3551SRodney W. Grimes.Dt SAVECORE 8 339fe48c6eSRuslan Ermilov.Os 348fae3551SRodney W. Grimes.Sh NAME 358fae3551SRodney W. Grimes.Nm savecore 368fae3551SRodney W. Grimes.Nd "save a core dump of the operating system" 378fae3551SRodney W. Grimes.Sh SYNOPSIS 387c7fb079SRuslan Ermilov.Nm 398fae3551SRodney W. Grimes.Fl c 407c7fb079SRuslan Ermilov.Nm 41628d16a3SDoug Barton.Fl C 42628d16a3SDoug Barton.Op Fl v 43628d16a3SDoug Barton.Op Ar directory device 44628d16a3SDoug Barton.Nm 454c98f36dSDag-Erling Smørgrav.Op Fl fkvz 46edc4f96eSBill Fenner.Op Ar directory Op Ar device ... 478fae3551SRodney W. Grimes.Sh DESCRIPTION 481fa8142dSRuslan ErmilovThe 491fa8142dSRuslan Ermilov.Nm 501fa8142dSRuslan Ermilovutility 51edc4f96eSBill Fennercopies a core dump into 521fa8142dSRuslan Ermilov.Ar directory , 53edc4f96eSBill Fenneror the current working directory if no 541fa8142dSRuslan Ermilov.Ar directory 55edc4f96eSBill Fennerargument is given, 568fae3551SRodney W. Grimesand enters a reboot message and information about the core dump into 578fae3551SRodney W. Grimesthe system log. 588fae3551SRodney W. Grimes.Pp 598fae3551SRodney W. GrimesThe options are as follows: 60f9b52c93SPhilippe Charnier.Bl -tag -width indent 61628d16a3SDoug Barton.It Fl C 62628d16a3SDoug BartonCheck to see if a dump exists, 63628d16a3SDoug Bartonand display a brief message to indicate the status. 64628d16a3SDoug BartonAn exit status of 0 indicates that a dump is there, 65628d16a3SDoug Barton1 indicates that none exists. 66628d16a3SDoug BartonThis option is compatible only with the 67628d16a3SDoug Barton.Op Fl v 68628d16a3SDoug Bartonoption. 698fae3551SRodney W. Grimes.It Fl c 70f9b52c93SPhilippe CharnierClear the dump, so that future invocations of 71f9b52c93SPhilippe Charnier.Nm 728fae3551SRodney W. Grimeswill ignore it. 738fae3551SRodney W. Grimes.It Fl f 745fb7027cSDavid E. O'BrienForce a dump to be taken even if either the dump was cleared or if the 755fb7027cSDavid E. O'Briendump header information is inconsistent. 764c98f36dSDag-Erling Smørgrav.It Fl k 774c98f36dSDag-Erling SmørgravDo not clear the dump after saving it. 788fae3551SRodney W. Grimes.It Fl v 79f9b52c93SPhilippe CharnierPrint out some additional debugging information. 80ff869641SPhilip PaepsSpecify twice for more information. 818fae3551SRodney W. Grimes.It Fl z 82f9b52c93SPhilippe CharnierCompress the core dump and kernel (see 83dff462c3SKris Kennaway.Xr gzip 1 ) . 848fae3551SRodney W. Grimes.El 858fae3551SRodney W. Grimes.Pp 861fa8142dSRuslan ErmilovThe 871fa8142dSRuslan Ermilov.Nm 881fa8142dSRuslan Ermilovutility 89edc4f96eSBill Fennerlooks for dumps on each device specified by the 90edc4f96eSBill Fenner.Ar device 91edc4f96eSBill Fennerargument(s), or on each device in 92edc4f96eSBill Fenner.Pa /etc/fstab 931fa8142dSRuslan Ermilovmarked as 941fa8142dSRuslan Ermilov.Dq dump 951fa8142dSRuslan Ermilovor 961fa8142dSRuslan Ermilov.Dq swap . 971fa8142dSRuslan ErmilovThe 981fa8142dSRuslan Ermilov.Nm 991fa8142dSRuslan Ermilovutility 100edc4f96eSBill Fennerchecks the core dump in various ways to make sure that it is complete. 1018fae3551SRodney W. GrimesIf it passes these checks, it saves the core image in 1028fae3551SRodney W. Grimes.Ar directory Ns Pa /vmcore.# 103edc4f96eSBill Fennerand information about the core in 104edc4f96eSBill Fenner.Ar directory Ns Pa /info.# 10510187caeSRobert WatsonFor kernel textdumps generated with the 10610187caeSRobert Watson.Xr textdump 4 10710187caeSRobert Watsonfacility, output will be stored in the 10810187caeSRobert Watson.Xr tar 5 10910187caeSRobert Watsonformat and named 11010187caeSRobert Watson.Ar director Ns Pa /textdump.tar.# 1118fae3551SRodney W. GrimesThe ``#'' is the number from the first line of the file 1128fae3551SRodney W. Grimes.Ar directory Ns Pa /bounds , 1138fae3551SRodney W. Grimesand it is incremented and stored back into the file each time 114f9b52c93SPhilippe Charnier.Nm 1158fae3551SRodney W. Grimessuccessfully runs. 1168fae3551SRodney W. Grimes.Pp 1171fa8142dSRuslan ErmilovThe 1181fa8142dSRuslan Ermilov.Nm 1191fa8142dSRuslan Ermilovutility 1208fae3551SRodney W. Grimesalso checks the available disk space before attempting to make the copies. 1218fae3551SRodney W. GrimesIf there is insufficient disk space in the file system containing 1228fae3551SRodney W. Grimes.Ar directory , 1238fae3551SRodney W. Grimesor if the file 1248fae3551SRodney W. Grimes.Ar directory Ns Pa /minfree 1258fae3551SRodney W. Grimesexists and the number of free kilobytes (for non-superusers) in the 1268fae3551SRodney W. Grimesfile system after the copies were made would be less than the number 1278fae3551SRodney W. Grimesin the first line of this file, the copies are not attempted. 1288fae3551SRodney W. Grimes.Pp 1298fae3551SRodney W. GrimesIf 130f9b52c93SPhilippe Charnier.Nm 1318fae3551SRodney W. Grimessuccessfully copies the kernel and the core dump, the core dump is cleared 1328fae3551SRodney W. Grimesso that future invocations of 133f9b52c93SPhilippe Charnier.Nm 1348fae3551SRodney W. Grimeswill ignore it. 1358fae3551SRodney W. Grimes.Pp 1361fa8142dSRuslan ErmilovThe 1371fa8142dSRuslan Ermilov.Nm 1381fa8142dSRuslan Ermilovutility 1398fae3551SRodney W. Grimesis meant to be called near the end of the initialization file 1408fae3551SRodney W. Grimes.Pa /etc/rc 1418fae3551SRodney W. Grimes(see 1428fae3551SRodney W. Grimes.Xr rc 8 ) . 1438fae3551SRodney W. Grimes.Sh SEE ALSO 144dff462c3SKris Kennaway.Xr gzip 1 , 145e8ae41c3SRuslan Ermilov.Xr getbootfile 3 , 14610187caeSRobert Watson.Xr textdump 4 , 147138f7e4bSTom Rhodes.Xr tar 5 , 148e2fb2db5SNick Hibma.Xr dumpon 8 , 1498fae3551SRodney W. Grimes.Xr syslogd 8 1508fae3551SRodney W. Grimes.Sh HISTORY 1518fae3551SRodney W. GrimesThe 1528fae3551SRodney W. Grimes.Nm 153629e80efSPhilippe Charnierutility appeared in 1548fae3551SRodney W. Grimes.Bx 4.1 . 15510187caeSRobert Watson.Pp 15610187caeSRobert WatsonSupport for kernel textdumps appeared in 1572a72feb4SChristian Brueffer.Fx 7.1 . 1586087df9eSRuslan Ermilov.Sh BUGS 1596087df9eSRuslan ErmilovThe minfree code does not consider the effect of compression or sparse files. 160