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[Linux-cluster] Cannot mount GFS filesystem



Hello,

With the command "mount -t gfs /dev/sd6 /mnt " on Node1 and Node2 
I get 2 different errors.

Node 1 :      error "mount:/dev/sd6 already mounted or /mnt busy" 

Node 2 :      error "mount:permission denied" 

Find the strace of Node1 below.

/dev/sda6 is not mounted anywhere else, 
Nor is it in the /etc/ftab.
/mnt is not mounted.

Do help me on this

Thanks 
Shailesh


Strace give the follwoing dump :
 
execve("/bin/mount", ["mount", "-t", "gfs", "/dev/sda6",
"/root/10.10.20.49/"], [/* 23 vars */]) = 0
uname({sys="Linux", node="localhost.localdomain", ...}) = 0
brk(0)                                  = 0x986e000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=130890, ...}) = 0
old_mmap(NULL, 130890, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fd1000
close(3)                                = 0
open("/lib/tls/libc.so.6", O_RDONLY)    = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\216"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1454802, ...}) = 0
old_mmap(0x854000, 1223900, PROT_READ|PROT_EXEC, MAP_PRIVATE|
MAP_DENYWRITE, 3, 0) = 0x854000
old_mmap(0x979000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
MAP_DENYWRITE, 3, 0x124000) = 0x979000
old_mmap(0x97d000, 7388, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
MAP_ANONYMOUS, -1, 0) = 0x97d000
close(3)                                = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7fd0000
mprotect(0x979000, 4096, PROT_READ)     = 0
mprotect(0x84b000, 4096, PROT_READ)     = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7fd0aa0,
limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7fd1000, 130890)              = 0
brk(0)                                  = 0x986e000
brk(0x988f000)                          = 0x988f000
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=48521008, ...}) = 0
mmap2(NULL, 2097152, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7dd0000
close(3)                                = 0
umask(022)                              = 022
open("/dev/null", O_RDWR|O_LARGEFILE)   = 3
close(3)                                = 0
getuid32()                              = 0
geteuid32()                             = 0
lstat64("/etc/mtab", {st_mode=S_IFREG|0644, st_size=299, ...}) = 0
stat64("/sbin/mount.gfs", 0xbfe18ab0)   = -1 ENOENT (No such file or
directory)
rt_sigprocmask(SIG_BLOCK, ~[TRAP SEGV RTMIN RT_1], NULL, 8) = 0
mount("/dev/sda6", "/root/10.10.20.49/", "gfs", MS_MGC_VAL, NULL) = -1
EBUSY (Device or resource busy)
rt_sigprocmask(SIG_UNBLOCK, ~[TRAP SEGV RTMIN RT_1], NULL, 8) = 0
open("/usr/share/locale/locale.alias", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7dcf000
read(3, "# Locale name alias data base.\n#"..., 4096) = 2528
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0xb7dcf000, 4096)                = 0
open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/util-linux.mo",
O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_US.utf8/LC_MESSAGES/util-linux.mo", O_RDONLY)
= -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_US/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1
ENOENT (No such file or directory)
open("/usr/share/locale/en.UTF-8/LC_MESSAGES/util-linux.mo", O_RDONLY) =
-1 ENOENT (No such file or directory)
open("/usr/share/locale/en.utf8/LC_MESSAGES/util-linux.mo", O_RDONLY) =
-1 ENOENT (No such file or directory)
open("/usr/share/locale/en/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1
ENOENT (No such file or directory)
write(2, "mount: /dev/sda6 already mounted"..., 60mount: /dev/sda6
already mounted or /root/10.10.20.49/ busy
) = 60
umask(077)                              = 022
open("/etc/mtab", O_RDONLY|O_LARGEFILE) = 3
umask(022)                              = 077
fstat64(3, {st_mode=S_IFREG|0644, st_size=299, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7dcf000
read(3, "/dev/sda3 / ext3 rw 0 0\nnone /pr"..., 4096) = 299
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0xb7dcf000, 4096)                = 0
exit_group(32)                          = ?
Process 28812 detached








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