e2fsck hanging

[Brian Davidson]

Here's strace when running w/ 6GB of memory & with max_map_count set  
to 20000000.  It looks like that got rid of the ENOMEM's from mmap,  
but it's still hanging in the same place...

write(1, "Pass 2: Checking ", 17)       = 17
write(1, "directory", 9)                = 9
write(1, " structure\n", 11)            = 11
mmap(NULL, 91574272, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,  
-1, 0) = 0x2b1078c55000
mmap(NULL, 91574272, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,  
-1, 0) = 0x2b107e3aa000
mmap(NULL, 501645312, PROT_READ|PROT_WRITE, MAP_PRIVATE| 
MAP_ANONYMOUS, -1, 0) = 0x2b1083aff000
mmap(NULL, 588230656, PROT_READ|PROT_WRITE, MAP_PRIVATE| 
MAP_ANONYMOUS, -1, 0) = 0x2b10a1967000
munmap(0x2b10a1967000, 588230656)       = 0
lseek(5, 6303744, SEEK_SET)             = 6303744
read(5, "\2\0\0\0\f\0\1\2.\0\0\0\2\0\0\0\f\0\2\2..\0\0\v\0\0\0 
\24"..., 4096) = 4096
lseek(5, 6307840, SEEK_SET)             = 6307840
read(5, "\v\0\0\0\f\0\1\2.\0\0\0\2\0\0\0\364\17\2\2..\0\0\0\0\0"...,  
4096) = 4096
lseek(5, 6311936, SEEK_SET)             = 6311936
read(5, "\0\0\0\0\0\20\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,  
4096) = 4096
lseek(5, 6316032, SEEK_SET)             = 6316032
read(5, "\0\0\0\0\0\20\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,  
4096) = 4096
lseek(5, 6320128, SEEK_SET)             = 6320128
read(5, "\0\0\0\0\0\20\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,  
4096) = 4096
lseek(5, 41709568, SEEK_SET)            = 41709568
read(5, "\323\0\0\0\f\0\1\2.\0\0\0\226\2\252+\f\0\2\2..\0\0\324"...,  
4096) = 4096
lseek(5, 41713664, SEEK_SET)            = 41713664
read(5, "\324\0\0\0\f\0\1\2.\0\0\0\323\0\0\0\f\0\2\2..\0\0\214 
\300"..., 4096) = 4096
lseek(5, 41717760, SEEK_SET)            = 41717760
read(5, "\325\0\0\0\f\0\1\2.\0\0\0\226\2\252+\f\0\2\2..\0\0\326"...,  
4096) = 4096

The backtrace seems to be essentially the same:

(gdb) bt
#0  0x0000000000418aa5 in get_icount_el (icount=0x5cf170,  
ino=732562070, create=1) at icount.c:251
#1  0x0000000000418dd7 in ext2fs_icount_increment (icount=0x5cf170,  
ino=732562070, ret=0x7fffffad6e06)
     at icount.c:339
#2  0x000000000040a3cf in check_dir_block (fs=0x5af560,  
db=0x2b1011a88064, priv_data=0x7fffffad7000) at pass2.c:1021
#3  0x0000000000416c69 in ext2fs_dblist_iterate (dblist=0x5c3f20,  
func=0x409980 <check_dir_block>,
     priv_data=0x7fffffad7000) at dblist.c:234
#4  0x0000000000408d9d in e2fsck_pass2 (ctx=0x5ae700) at pass2.c:149
#5  0x0000000000403102 in e2fsck_run (ctx=0x5ae700) at e2fsck.c:193
#6  0x0000000000401e50 in main (argc=Variable "argc" is not available.
) at unix.c:1075
#7  0x0000000000421161 in __libc_start_main ()
#8  0x000000000040018a in _start ()
#9  0x00007fffffad7508 in ?? ()
#10 0x0000000000000000 in ?? ()

Additional info:

$ cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 4)

$ uname -a
Linux XXXXX.gmu.edu 2.6.16 #1 SMP Mon Mar 27 16:56:51 EST 2006 x86_64  
x86_64 x86_64 GNU/Linux

$ e2fsck -V
e2fsck 1.35 (28-Feb-2004)
         Using EXT2FS Library version 1.35, 28-Feb-2004

$ rpm -q e2fsprogs
e2fsprogs-1.35-12.4.EL4

Brian Davidson
George Mason University