[linux-lvm] lvcreate core dump on large disks, vg name corrupted.

[svetljo]

you can not use lvm-1.0.1rc2 tools with 0.9.1beta2 code in the kernel

try to patch the kernel with the lvm code from cvs

or befor configuring the lvm code change the kernel version in the top 
Makefile
/usr/src/linux/Makefile  to 2.4.8-ac14 and after applying the patch back 
to 2.4.9-ac14
this should be working with lvm-1.0.1rc2

or use lvm-1.0, the patch applies clean to -ac kernel

Sean Burford wrote:

>Hi,
>
>I am attempting to use the LVM tools under Linux 2.4.9-ac14 to set up
>access to a SAN.  lvcreate is seg faulting because main() is passing a
>corrupted vg name to lv_create().  I suspect this is due to the large
>partitions that are being dealt with (4*100G).
>
>Using:
>  LVM 1.0.1-rc2 userland tools
>  The LVM kernel modules that came with the kernel.  I could not apply
>the 1.0.x patches as they do not compile with the Alan Cox patches.  I
>will see if the straight 2.4.9 kernel works with the AMI MegaRAID card
>in the box soon, because if it does I will be able to patch the kernel
>for LVM 1.0.1-rc2.
>
>Some related output from dmesg is:
>SCSI device sdh: 209715200 512-byte hdwr sectors (107374 MB)
> sdh: sdh1
>SCSI device sdi: 209715200 512-byte hdwr sectors (107374 MB)
> sdi: sdi1
>SCSI device sdj: 209715200 512-byte hdwr sectors (107374 MB)
> sdj: sdj1
>SCSI device sdk: 209715200 512-byte hdwr sectors (107374 MB)
> sdk: sdk1
>LVM version LVM 0.9.1_beta7(ish)(20 June 2001) module loaded
>
>Following the LVM-Howto, I have configured the LVM as follows:
>vgscan
>pvcreate /dev/sdh1
>pvcreate /dev/sdi1
>pvcreate /dev/sdj1
>pvcreate /dev/sdk1
>vgcreate san_vg /dev/sd[hijk]1
>lvcreate -v -L255000 -ndata_lv san_vg
>
>lvcreate segfaults:
># lvcreate -v -L255000 -ndata_lv san_vg
>lvcreate -- checking volume group name "san_vg"
>lvcreate -- checking volume group existence
>lvcreate -- checking volume group activity
>lvcreate -- checking logical volume path "/dev/san_vg/data_lv"
>lvcreate -- checking stripe count
>lvcreate -- checking stripe size
>lvcreate -- locking logical volume manager
>lvcreate -- getting volume group status from VGDA in kernel
>lvcreate -- checking stripe size against volume group physical extent
>size
>lvcreate -- reading volume group data of "san_vg"
>lvcreate -- checking logical volume maximum size
>lvcreate -- checking volume group free space
>lvcreate -- checking stripe count against physical volume count
>lvcreate -- checking for maximum logical volume count
>lvcreate -- setting up logical volume
>lvcreate -- setting read ahead sectors
>lvcreate -- creating logical volume VGDA in kernel
>Segmentation fault (core dumped)
>
>I recompiled it with debugging, and got the following output:
>
>[root at backgammon tools]# 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"...
>(gdb) run -v -L255000 -ndata_lv san_vg
>Starting program: /usr/local/src/LVM/1.0.1-rc2/tools/./lvcreate -v
>-L255000 -ndata_lv san_vg
>lvcreate -- checking volume group name "san_vg"
>lvcreate -- checking volume group existence
>lvcreate -- checking volume group activity
>lvcreate -- checking logical volume path "/dev/san_vg/data_lv"
>lvcreate -- checking stripe count
>lvcreate -- checking stripe size
>lvcreate -- locking logical volume manager
>lvcreate -- getting volume group status from VGDA in kernel
>lvcreate -- checking stripe size against volume group physical extent
>size
>lvcreate -- reading volume group data of "san_vg"
>lvcreate -- checking logical volume maximum size
>lvcreate -- checking volume group free space
>lvcreate -- checking stripe count against physical volume count
>lvcreate -- checking for maximum logical volume count
>lvcreate -- setting up logical volume
>lvcreate -- setting read ahead sectors
>lvcreate -- creating logical volume VGDA in kernel
> 
>Program received signal SIGSEGV, Segmentation fault.
>lv_create (vg=0x5, lv=0xbffffa14,
>    lv_name=0xbffffa2c
>"dûÿ¿\213ûÿ¿°ûÿ¿àûÿ¿øûÿ¿\032üÿ¿&üÿ¿0üÿ¿óýÿ¿\022þÿ¿,þÿ¿Aþÿ¿Xþÿ¿cþÿ¿\227þÿ¿¤þÿ¿¬þÿ¿¼þÿ¿Êþÿ¿Øþÿ¿éþÿ¿÷þÿ¿\002ÿÿ¿\rÿÿ¿@ÿÿ¿»ÿÿ¿")
>    at lv_create_remove.c:42
>42      inline int lv_create ( vg_t *vg, lv_t *lv, char *lv_name) {
>(gdb) bt
>#0  lv_create (vg=0x5, lv=0xbffffa14,
>    lv_name=0xbffffa2c
>"dûÿ¿\213ûÿ¿°ûÿ¿àûÿ¿øûÿ¿\032üÿ¿&üÿ¿0üÿ¿óýÿ¿\022þÿ¿,þÿ¿Aþÿ¿Xþÿ¿cþÿ¿\227þÿ¿¤þÿ¿¬þÿ¿¼þÿ¿Êþÿ¿Øþÿ¿éþÿ¿÷þÿ¿\002ÿÿ¿\rÿÿ¿@ÿÿ¿»ÿÿ¿")
>    at lv_create_remove.c:42
>#1  0x0804b03d in main (argc=5, argv=0xbffffa14) at lvcreate.c:791
>#2  0x4006e177 in __libc_start_main (main=0x8049390 <main>, argc=5,
>    ubp_av=0xbffffa14, init=0x8048e88 <_init>, fini=0x804b4d0 <_fini>,
>    rtld_fini=0x4000e184 <_dl_fini>, stack_end=0xbffffa0c)
>    at ../sysdeps/generic/libc-start.c:129
>