On Thu, Aug 29, 2013 at 11:04:30AM -0500, Eric Sandeen wrote:
> You might use gdb, or an instrumented resize2fs, to find out which memory
> allocation is failing and/or where the memory allocations are going.
> The sad truth may just be that 256M + 512M swap isn't going to do the
> trick.
You might try applying the following patch to the e2fsprogs sources,
compiling it with "make CFLAGS=-g" so debuging information is enabled,
and optimizations are disabled, and then running resize2fs under gdb,
after setting a breakpoint at the function, ext2fs_breakpoint(). That
will tell us where it's crashing, which might be of academic interest,
but as Eric has said (and as I have commented on the Ubuntu launchpad
website), it may be extremely unrealistic to expect this to work.
Oh, also try running resize2fs with the options "-p -d 31" and
redirect the output to a file. This will give us more information
about how far it got before it ran out of memory.
Cheers,
- Ted
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index ff088bb..58074ea 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1462,6 +1462,8 @@ extern int ext2fs_open_file(const char *pathname, int flags, mode_t mode);
extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
extern int ext2fs_fstat(int fd, ext2fs_struct_stat *buf);
+extern void ext2fs_breakpoint(void);
+
/*
* The actual inlined functions definitions themselves...
*
@@ -1489,8 +1491,10 @@ _INLINE_ errcode_t ext2fs_get_mem(unsigned long size, void *ptr)
void *pp;
pp = malloc(size);
- if (!pp)
+ if (!pp) {
+ ext2fs_breakpoint();
return EXT2_ET_NO_MEMORY;
+ }
memcpy(ptr, &pp, sizeof (pp));
return 0;
}
@@ -1500,8 +1504,10 @@ _INLINE_ errcode_t ext2fs_get_memzero(unsigned long size, void *ptr)
void *pp;
pp = malloc(size);
- if (!pp)
+ if (!pp) {
+ ext2fs_breakpoint();
return EXT2_ET_NO_MEMORY;
+ }
memset(pp, 0, size);
memcpy(ptr, &pp, sizeof(pp));
return 0;
@@ -1554,8 +1560,10 @@ _INLINE_ errcode_t ext2fs_resize_mem(unsigned long EXT2FS_ATTR((unused)) old_siz
* with C99 strict type aliasing rules. */
memcpy(&p, ptr, sizeof(p));
p = realloc(p, size);
- if (!p)
+ if (!p) {
+ ext2fs_breakpoint();
return EXT2_ET_NO_MEMORY;
+ }
memcpy(ptr, &p, sizeof(p));
return 0;
}
diff --git a/lib/ext2fs/inline.c b/lib/ext2fs/inline.c
index eef3dda..9ab1c67 100644
--- a/lib/ext2fs/inline.c
+++ b/lib/ext2fs/inline.c
@@ -37,6 +37,10 @@
#define INCLUDE_INLINE_FUNCS
#include "ext2fs.h"
+void ext2fs_breakpoint(void)
+{
+}
+
/*
* We used to define this as an inline, but since we are now using
* autoconf-defined #ifdef's, we need to export this as a
--
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