Known problems with LVM 0.8i
----------------------------

Updated: 2000-01-31


1. compile with linux kernel 2.3.33 and above could fail:

In include/linux/lvm.h please change the
#include <asm/spinlock.h>
against
#include <linux/spinlock.h>

This issue has been solved with the LVM 2.3.40 kernel patch.


2. vgcreate segfault

Please try replacing the end of tools/lib/lvm_tab_vg_check_exist_all_vg.c
starting from line 94 by:

   if ( ret < 0 || size < 2) {
      if ( data != NULL) {
         free ( data);
         data = NULL;
      }
      if ( vg_name_ptr     != NULL)      free ( vg_name_ptr);
      else if ( vg_name_ptr_sav != NULL) free ( vg_name_ptr_sav);
   }

   return vg_name_ptr;
}

When you run out of space for the / file system (could happen during
SuSE 6.3 installation) the /etc/lvmtab is invalidated (empty). This
may cause a subsequent kernel Oops.

As a workaround on SuSE 6.3, remove the /etc/lvmconf directory 
contents during installation after creating at most 2 lvols or use 
command line specifying the -An option to vgcreate and lvcreate to
skip creation of a backup copy on the RAM disk.


3. Compile with kernel 2.2.13 or 2.2.14 fails:

> drivers/block/block.a(ll_rw_blk.o): In function `blk_dev_init':
> ll_rw_blk.o(.text.init+0xb0): undefined reference to `lvm_init'

Terry Hardie (terryh@orcas.net) notes:
> Actually, on line 362 of lvm.c in your kernel source, block/drivers,
> change the word "static" to "extern". The problem doesn't show up if
> you're compiling LVM as a module.

The line in question is:
__initfunc(static int lvm_init(void))

This should be changed to:
__initfunc(extern int lvm_init(void))


4. Compile with kernel 2.3.40 fails:

> ksyms.c:258: `block_fsync' undeclared here (not in a function)
> ksyms.c:258: initializer element for `__ksymtab_block_fsync.value' is not constant
> ksyms.c:269: `blkdev_close' undeclared here (not in a function)
> ksyms.c:269: initializer element for `__ksymtab_blkdev_close.value' is not constant

Jan-Benedict Glaw recommends the following fix:
- edit ./include/linux/fs.h
- locate line 775
- add the following two lines:

extern int blkdev_close(struct inode *, struct file *);
extern int block_fsync(struct file *, struct dentry *);