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.\" 31349d039bSPawel Jakub Dawidek.Dd December 14, 2012 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 40349d039bSPawel Jakub Dawidek.Op Fl v 41349d039bSPawel Jakub Dawidek.Op Ar device ... 427c7fb079SRuslan Ermilov.Nm 43628d16a3SDoug Barton.Fl C 44628d16a3SDoug Barton.Op Fl v 45349d039bSPawel Jakub Dawidek.Op Ar device ... 46628d16a3SDoug Barton.Nm 474c98f36dSDag-Erling Smørgrav.Op Fl fkvz 48edc4f96eSBill Fenner.Op Ar directory Op Ar device ... 498fae3551SRodney W. Grimes.Sh DESCRIPTION 501fa8142dSRuslan ErmilovThe 511fa8142dSRuslan Ermilov.Nm 521fa8142dSRuslan Ermilovutility 53edc4f96eSBill Fennercopies a core dump into 541fa8142dSRuslan Ermilov.Ar directory , 55edc4f96eSBill Fenneror the current working directory if no 561fa8142dSRuslan Ermilov.Ar directory 57edc4f96eSBill Fennerargument is given, 588fae3551SRodney W. Grimesand enters a reboot message and information about the core dump into 598fae3551SRodney W. Grimesthe system log. 608fae3551SRodney W. Grimes.Pp 618fae3551SRodney W. GrimesThe options are as follows: 62f9b52c93SPhilippe Charnier.Bl -tag -width indent 63628d16a3SDoug Barton.It Fl C 64628d16a3SDoug BartonCheck to see if a dump exists, 65628d16a3SDoug Bartonand display a brief message to indicate the status. 66628d16a3SDoug BartonAn exit status of 0 indicates that a dump is there, 67628d16a3SDoug Barton1 indicates that none exists. 68628d16a3SDoug BartonThis option is compatible only with the 69628d16a3SDoug Barton.Op Fl v 70628d16a3SDoug Bartonoption. 718fae3551SRodney W. Grimes.It Fl c 72f9b52c93SPhilippe CharnierClear the dump, so that future invocations of 73f9b52c93SPhilippe Charnier.Nm 748fae3551SRodney W. Grimeswill ignore it. 758fae3551SRodney W. Grimes.It Fl f 765fb7027cSDavid E. O'BrienForce a dump to be taken even if either the dump was cleared or if the 775fb7027cSDavid E. O'Briendump header information is inconsistent. 784c98f36dSDag-Erling Smørgrav.It Fl k 794c98f36dSDag-Erling SmørgravDo not clear the dump after saving it. 808fae3551SRodney W. Grimes.It Fl v 81f9b52c93SPhilippe CharnierPrint out some additional debugging information. 82ff869641SPhilip PaepsSpecify twice for more information. 838fae3551SRodney W. Grimes.It Fl z 84f9b52c93SPhilippe CharnierCompress the core dump and kernel (see 85dff462c3SKris Kennaway.Xr gzip 1 ) . 868fae3551SRodney W. Grimes.El 878fae3551SRodney W. Grimes.Pp 881fa8142dSRuslan ErmilovThe 891fa8142dSRuslan Ermilov.Nm 901fa8142dSRuslan Ermilovutility 91edc4f96eSBill Fennerlooks for dumps on each device specified by the 92edc4f96eSBill Fenner.Ar device 93edc4f96eSBill Fennerargument(s), or on each device in 94edc4f96eSBill Fenner.Pa /etc/fstab 951fa8142dSRuslan Ermilovmarked as 961fa8142dSRuslan Ermilov.Dq dump 971fa8142dSRuslan Ermilovor 981fa8142dSRuslan Ermilov.Dq swap . 991fa8142dSRuslan ErmilovThe 1001fa8142dSRuslan Ermilov.Nm 1011fa8142dSRuslan Ermilovutility 102edc4f96eSBill Fennerchecks the core dump in various ways to make sure that it is complete. 1038fae3551SRodney W. GrimesIf it passes these checks, it saves the core image in 1048fae3551SRodney W. Grimes.Ar directory Ns Pa /vmcore.# 105edc4f96eSBill Fennerand information about the core in 10620ba6b0dSRuslan Ermilov.Ar directory Ns Pa /info.# . 10710187caeSRobert WatsonFor kernel textdumps generated with the 10810187caeSRobert Watson.Xr textdump 4 10910187caeSRobert Watsonfacility, output will be stored in the 11010187caeSRobert Watson.Xr tar 5 11110187caeSRobert Watsonformat and named 11220ba6b0dSRuslan Ermilov.Ar directory Ns Pa /textdump.tar.# . 11320ba6b0dSRuslan ErmilovThe 11420ba6b0dSRuslan Ermilov.Dq # 11520ba6b0dSRuslan Ermilovis the number from the first line of the file 1168fae3551SRodney W. Grimes.Ar directory Ns Pa /bounds , 1178fae3551SRodney W. Grimesand it is incremented and stored back into the file each time 118f9b52c93SPhilippe Charnier.Nm 1198fae3551SRodney W. Grimessuccessfully runs. 1208fae3551SRodney W. Grimes.Pp 1211fa8142dSRuslan ErmilovThe 1221fa8142dSRuslan Ermilov.Nm 1231fa8142dSRuslan Ermilovutility 1248fae3551SRodney W. Grimesalso checks the available disk space before attempting to make the copies. 1258fae3551SRodney W. GrimesIf there is insufficient disk space in the file system containing 1268fae3551SRodney W. Grimes.Ar directory , 1278fae3551SRodney W. Grimesor if the file 1288fae3551SRodney W. Grimes.Ar directory Ns Pa /minfree 1298fae3551SRodney W. Grimesexists and the number of free kilobytes (for non-superusers) in the 1308fae3551SRodney W. Grimesfile system after the copies were made would be less than the number 1318fae3551SRodney W. Grimesin the first line of this file, the copies are not attempted. 1328fae3551SRodney W. Grimes.Pp 1338fae3551SRodney W. GrimesIf 134f9b52c93SPhilippe Charnier.Nm 1358fae3551SRodney W. Grimessuccessfully copies the kernel and the core dump, the core dump is cleared 1368fae3551SRodney W. Grimesso that future invocations of 137f9b52c93SPhilippe Charnier.Nm 1388fae3551SRodney W. Grimeswill ignore it. 1398fae3551SRodney W. Grimes.Pp 1401fa8142dSRuslan ErmilovThe 1411fa8142dSRuslan Ermilov.Nm 1421fa8142dSRuslan Ermilovutility 1438fae3551SRodney W. Grimesis meant to be called near the end of the initialization file 1448fae3551SRodney W. Grimes.Pa /etc/rc 1458fae3551SRodney W. Grimes(see 1468fae3551SRodney W. Grimes.Xr rc 8 ) . 1478fae3551SRodney W. Grimes.Sh SEE ALSO 148dff462c3SKris Kennaway.Xr gzip 1 , 149e8ae41c3SRuslan Ermilov.Xr getbootfile 3 , 15010187caeSRobert Watson.Xr textdump 4 , 151138f7e4bSTom Rhodes.Xr tar 5 , 152e2fb2db5SNick Hibma.Xr dumpon 8 , 1538fae3551SRodney W. Grimes.Xr syslogd 8 1548fae3551SRodney W. Grimes.Sh HISTORY 1558fae3551SRodney W. GrimesThe 1568fae3551SRodney W. Grimes.Nm 157629e80efSPhilippe Charnierutility appeared in 1588fae3551SRodney W. Grimes.Bx 4.1 . 15910187caeSRobert Watson.Pp 16010187caeSRobert WatsonSupport for kernel textdumps appeared in 1612a72feb4SChristian Brueffer.Fx 7.1 . 1626087df9eSRuslan Ermilov.Sh BUGS 1636087df9eSRuslan ErmilovThe minfree code does not consider the effect of compression or sparse files. 164