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Re: [linux-lvm] lvcreate seg faults in 1.0.1-r4



Hello Tim,

You have a problem with gcc 2.96 (I have the same problem with a RedHat 7.2 gcc 2.96), Change in the file "<lvm_path_source>/make.tmpl" the line "CFLAGS+= -g -O2 -Wall -pg" by "CFLAGS+= -g -O0 -Wall -pg" and recompile the lvm utilities.

Best regards

Francis

Tim Nichols wrote:

I am having trouble getting lvcreate to work. I've been able to create the PV and VG, but lvcreate always core dumps with a seg fault. I've confirmed that I have the same code level in the kernel and tools (1.0.1-rc4). I've tried compiling the tools with gcc (v2.96) and egcs (v2.91.66), but both fail. I'm running a 2.4.14 kernel, lvm as a module, and glibc-2.2.4-19.

The problem seems to be with a corrupt lvol name from what I see in the gdb output I've attached.



Any help would be great.



Tim



[root monolith /root]# gcc -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-85)

[root monolith /root]# egcs -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66/specs
gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)

[root monolith /root]# cat /proc/lvm/global
LVM module LVM version 1.0.1-rc4(03/10/2001)



Total:  1 VG  1 PV  0 LVs (0 LVs open)
Global: 3175 bytes malloced   IOP version: 10   2:05:33 active



VG: vg00 [1 PV, 0 LV/0 open] PE Size: 4096 KB
Usage [KB/PE]: 6635520 /1620 total 0 /0 used 6635520 /1620 free
PV: [AA] hdf1 6635520 /1620 0 /0 6635520 /
1620
LVs: none


[root monolith /root]# lvcreate -L 1500 -n lvol1 vg00
Segmentation fault (core dumped)

[root monolith /root]# lvcreate -L1500 -nlvol1 vg00
Segmentation fault (core dumped)

[root monolith /root]# gdb lvcreate
GNU gdb 5.0rh-5 Red Hat Linux 7.1
Copyright 2001 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux"...
(no debugging symbols found)...
(gdb) run -L1500 -nlvol1 vg00
Starting program: /sbin/lvcreate -L1500 -nlvol1 vg00




Program received signal SIGSEGV, Segmentation fault.
lv_create (vg=0x4, lv=0xbffff9f4,
lv_name=0xbffffa08 " 6ûÿ¿ ûÿ¿fûÿ¿{ûÿ¿\223ûÿ¿µûÿ¿Ôûÿ¿àûÿ¿êûÿ¿­ýÿ¿Ìýÿ¿æýÿ¿ûýÿ¿\ <mailto:6%FB%FF%BF %FB%FF%BFf%FB%FF%BF%7B%FB%FF%BF%5C223%FB%FF%BF%B5%FB%FF%BF%D4%FB%FF%BF%E0%FB%FF%BF%EA%FB%FF%BF%AD%FD%FF%BF%CC%FD%FF%BF%E6%FD%FF%BF%FB%FD%FF%BF%5C>
022þÿ¿\035þÿ¿Gþÿ¿Tþÿ¿\\þÿ¿lþÿ¿zþÿ¿\210þÿ¿\231þÿ¿§þÿ¿Éþÿ¿âþÿ¿íþÿ¿øþÿ¿+ÿÿ¿Úÿÿ¿")
at lv_create_remove.c:42
42 int lv_create ( vg_t *vg, lv_t *lv, char *lv_name) {
(gdb) where
#0 lv_create (vg=0x4, lv=0xbffff9f4,
lv_name=0xbffffa08 " 6ûÿ¿ ûÿ¿fûÿ¿{ûÿ¿\223ûÿ¿µûÿ¿Ôûÿ¿àûÿ¿êûÿ¿­ýÿ¿Ìýÿ¿æýÿ¿ûýÿ¿\ <mailto:6%FB%FF%BF %FB%FF%BFf%FB%FF%BF%7B%FB%FF%BF%5C223%FB%FF%BF%B5%FB%FF%BF%D4%FB%FF%BF%E0%FB%FF%BF%EA%FB%FF%BF%AD%FD%FF%BF%CC%FD%FF%BF%E6%FD%FF%BF%FB%FD%FF%BF%5C>
022þÿ¿\035þÿ¿Gþÿ¿Tþÿ¿\\þÿ¿lþÿ¿zþÿ¿\210þÿ¿\231þÿ¿§þÿ¿Éþÿ¿âþÿ¿íþÿ¿øþÿ¿+ÿÿ¿Úÿÿ¿")
at lv_create_remove.c:42
#1 0x0804b03d in strcpy ()
#2 0x40074627 in __libc_start_main (main=0x8049390 <strcpy+384>, argc=4,
ubp_av=0xbffff9f4, init=0x8048e88 <_init>, fini=0x804b4d0 <_fini>,
rtld_fini=0x4000dcd4 <_dl_fini>, stack_end=0xbffff9ec)
at ../sysdeps/generic/libc-start.c:129
(gdb) quit
The program is running. Exit anyway? (y or n) y


[root monolith /root]# uname -a
Linux monolith 2.4.14 #49 Sat Nov 24 00:27:41 PST 2001 i686 unknown







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