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

Thu Sep 27 11:15:18 UTC 2001

>
>tar xIf /usr/local/src/linux-2.4.9.tar.bz2
>cat /usr/local/src/bonding-2.4.9-20010920 | patch -p1  (used for
>etherchannel bonding, nothing to do with filesystems)
>
you shouldn't do this

>
>patch -p1 <
>/usr/local/src/LVM/1.0.1-rc2/PATCHES/lvm-1.0.1-rc2-2.4.9.patch
>patch -p1 <
>/usr/local/src/LVM/1.0.1-rc2/PATCHES/linux-2.4.9-VFS-lock.patch
>
you should apply only the lvm-1.0.1-rc2-2.4.9.patch , but you should run
in /usr/local/src/LVM/1.0.1-rc2/  ./configure and than in PATCHES make first
every time you apply some serious patch
make combines the parts needed by your kernel from all patches in PATCHES

>
>
>And have recreated the partitions as 2*20G, and still get segfaults with
>the same symptoms (lv_create() passed junk in lv_name), so disk size
>does not appear to be the key.
>
>I might try it against a couple of loopback filesystems without lpfcdd
>and bonding loaded, to see if it is a problem interacting with the
>lpfcdd module.  I'll try creating filesystems on the SAN LUN's/disks
>first.
>
>svetljo wrote:
>
>>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
>>>
>>_______________________________________________
>>linux-lvm mailing list
>>linux-lvm at sistina.com
>>http://lists.sistina.com/mailman/listinfo/linux-lvm
>>read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
>>
>