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authorGleb Smirnoff <glebius@FreeBSD.org>2020-11-19 02:20:38 +0000
committerGleb Smirnoff <glebius@FreeBSD.org>2020-11-19 02:20:38 +0000
commitbc7ed46b635eec9f9df97ed6ae6fc5e229f182a6 (patch)
treed82b2db94868ba54785359ef739502f86c2e61aa /sbin/savecore/savecore.8
parent33482dae89c26158a22ccb3b7f2ca6e6652f29b4 (diff)
downloadsrc-bc7ed46b635eec9f9df97ed6ae6fc5e229f182a6.tar.gz
src-bc7ed46b635eec9f9df97ed6ae6fc5e229f182a6.zip
Add '-u' switch that would uncompress cores that were compressed by
kernel during dump time. A real life scenario is that cores are compressed to reduce size of dumpon partition, but we either don't care about space in the /var/crash or we have a filesystem level compression of /var/crash. And we want cores to be uncompressed in /var/crash because we'd like to instantily read them with kgdb. In this case we want kernel to write cores compressed, but savecore(1) write them uncompressed. Reviewed by: markj, gallatin Relnotes: yes Differential Revision: https://reviews.freebsd.org/D27245
Notes
Notes: svn path=/head/; revision=367824
Diffstat (limited to 'sbin/savecore/savecore.8')
-rw-r--r--sbin/savecore/savecore.86
1 files changed, 4 insertions, 2 deletions
diff --git a/sbin/savecore/savecore.8 b/sbin/savecore/savecore.8
index e7b0414b62dc..512da5cc3dae 100644
--- a/sbin/savecore/savecore.8
+++ b/sbin/savecore/savecore.8
@@ -28,7 +28,7 @@
.\" From: @(#)savecore.8 8.1 (Berkeley) 6/5/93
.\" $FreeBSD$
.\"
-.Dd March 17, 2018
+.Dd November 17, 2020
.Dt SAVECORE 8
.Os
.Sh NAME
@@ -45,7 +45,7 @@
.Op Ar device ...
.Nm
.Op Fl -libxo
-.Op Fl fkvz
+.Op Fl fkuvz
.Op Fl m Ar maxdumps
.Op Ar directory Op Ar device ...
.Sh DESCRIPTION
@@ -92,6 +92,8 @@ Once the number of stored dumps is equal to
.Ar maxdumps
the counter will restart from
.Dv 0 .
+.It Fl u
+Uncompress the dump in case it was compressed by the kernel.
.It Fl v
Print out some additional debugging information.
Specify twice for more information.