# vzctl enter 185
enter into VE 185 failed
Unable to open pty: No such file or directory

strace vzctl enter 185 

execve("/usr/sbin/vzctl", ["vzctl", "enter", "185"], [/* 16 vars */]) = 0
uname({sys="Linux", node="host-246-han", ...}) = 0
brk(0)                                  = 0x509000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8f522c9000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/usr/lib/vzctl/lib/tls/x86_64/libvzctl.so.0.0.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat("/usr/lib/vzctl/lib/tls/x86_64", 0x7fff587f1a60) = -1 ENOENT (No such file or directory)
open("/usr/lib/vzctl/lib/tls/libvzctl.so.0.0.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat("/usr/lib/vzctl/lib/tls", 0x7fff587f1a60) = -1 ENOENT (No such file or directory)
open("/usr/lib/vzctl/lib/x86_64/libvzctl.so.0.0.2", O_RDONLY) = -1 ENOENT (No such file or directory)
stat("/usr/lib/vzctl/lib/x86_64", 0x7fff587f1a60) = -1 ENOENT (No such file or directory)
open("/usr/lib/vzctl/lib/libvzctl.so.0.0.2", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300w\0\0"..., 640) = 640
fstat(3, {st_mode=S_IFREG|0755, st_size=743104, ...}) = 0
mmap(NULL, 1220008, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2b8f523cb000
mprotect(0x2b8f523f1000, 1064360, PROT_NONE) = 0
mmap(0x2b8f524cb000, 172032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x2b8f524cb000
close(3)                                = 0
open("/usr/lib/vzctl/lib/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=32168, ...}) = 0
mmap(NULL, 32168, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b8f524f5000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/libdl.so.2", O_RDONLY)       = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\36\0\0"..., 640) = 640
fstat(3, {st_mode=S_IFREG|0644, st_size=12072, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8f524fd000
mmap(NULL, 1058728, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2b8f524fe000
mprotect(0x2b8f52501000, 1046440, PROT_NONE) = 0
mmap(0x2b8f525fe000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x2b8f525fe000
close(3)                                = 0
open("/usr/lib/vzctl/lib/libutil.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/libutil.so.1", O_RDONLY)     = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@\24\0\0"..., 640) = 640
fstat(3, {st_mode=S_IFREG|0644, st_size=11344, ...}) = 0
mmap(NULL, 1057944, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2b8f52601000
mprotect(0x2b8f52603000, 1049752, PROT_NONE) = 0
mmap(0x2b8f52701000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x2b8f52701000
close(3)                                = 0
open("/usr/lib/vzctl/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\324"..., 640) = 640
fstat(3, {st_mode=S_IFREG|0755, st_size=1295328, ...}) = 0
mmap(NULL, 2354760, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2b8f52704000
mprotect(0x2b8f52826000, 1166920, PROT_NONE) = 0
mmap(0x2b8f52904000, 241664, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x100000) = 0x2b8f52904000
mmap(0x2b8f5293f000, 15944, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2b8f5293f000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8f52943000
arch_prctl(0x1002, 0x2b8f52943760)      = 0
munmap(0x2b8f524f5000, 32168)           = 0
brk(0)                                  = 0x509000
brk(0x52a000)                           = 0x52a000
brk(0)                                  = 0x52a000
rt_sigaction(SIGPIPE, {SIG_IGN}, NULL, 8) = 0
open("/etc/vz/vz.conf", O_RDONLY)       = 3
stat("/etc/vz/vz.conf", {st_mode=S_IFREG|0644, st_size=699, ...}) = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=699, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8f524f5000
read(3, "## Global parameters\nVIRTUOZZO=y"..., 4096) = 699
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x2b8f524f5000, 4096)            = 0
open("/var/log/vzctl.log", O_WRONLY|O_APPEND|O_CREAT, 0666) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=768950, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8f524f5000
fstat(3, {st_mode=S_IFREG|0644, st_size=768950, ...}) = 0
lseek(3, 768950, SEEK_SET)              = 768950
stat("/etc/vz/conf/185.conf", {st_mode=S_IFREG|0644, st_size=2026, ...}) = 0
open("/etc/vz/conf/185.conf", O_RDONLY) = 4
stat("/etc/vz/conf/185.conf", {st_mode=S_IFREG|0644, st_size=2026, ...}) = 0
fstat(4, {st_mode=S_IFREG|0644, st_size=2026, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8f524f6000
read(4, "#  Copyright (C) 2000-2006 SWsof"..., 4096) = 2026
read(4, "", 4096)                       = 0
close(4)                                = 0
munmap(0x2b8f524f6000, 4096)            = 0
fcntl(0, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE|0x8000)
fcntl(1, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE|0x8000)
fcntl(2, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE|0x8000)
open("/dev/vzctl", O_RDWR)              = 4
ioctl(4, 0x400c2e05, 0x7fff587f1e20)    = 0
close(3)                                = 0
munmap(0x2b8f524f5000, 4096)            = 0
ioctl(4, 0x400c2e05, 0x7fff587f1de0)    = 0
pipe([3, 5])                            = 0
pipe([6, 7])                            = 0
pipe([8, 9])                            = 0
syscall_501(0xb9, 0x50a1f0, 0xffffffffffffffff, 0, 0x20, 0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) = 0
socket(PF_FILE, SOCK_STREAM, 0)         = 10
connect(10, {sa_family=AF_FILE, path="/var/run/.nscd_socket"}, 110) = 0
writev(10, [{"\2\0\0\0\0\0\0\0\5\0\0\0", 12}, {"root\0", 5}], 2) = 17
read(10, "\2\0\0\0\1\0\0\0\5\0\0\0\2\0\0\0\0\0\0\0\0\0\0\0\5\0\0"..., 36) = 36
read(10, "root\0x\0root\0/root\0/bin/bash\0", 28) = 28
close(10)                               = 0
socket(PF_FILE, SOCK_STREAM, 0)         = 10
connect(10, {sa_family=AF_FILE, path="/var/run/.nscd_socket"}, 110) = 0
writev(10, [{"\2\0\0\0\2\0\0\0\5\0\0\0", 12}, {"root\0", 5}], 2) = 17
read(10, "\2\0\0\0\1\0\0\0\5\0\0\0\2\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
readv(10, [{"", 0}, {"root\0x\0", 7}], 2) = 7
read(10, NULL, 0)                       = 0
close(10)                               = 0
rt_sigaction(SIGCHLD, {0x405b58, [], SA_NOCLDSTOP|0x4000000}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {SIG_IGN}, NULL, 8) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x2b8f529437f0) = 770
close(3)                                = 0
close(7)                                = 0
close(9)                                = 0
read(8, "\377\377\377\377", 4)          = 4
fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 0), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b8f524f5000
write(1, "enter into VE 185 failed\n", 25enter into VE 185 failed
) = 25
fcntl(6, F_GETFL)                       = 0 (flags O_RDONLY|O_LARGEFILE)
fcntl(6, F_SETFL, O_RDONLY|O_NONBLOCK)  = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
rt_sigreturn(0x11)                      = 0
read(6, "Unable to open pty: No such file"..., 10239) = 46
write(1, "Unable to open pty: No such file"..., 46Unable to open pty: No such file or directory
) = 46
read(6, "", 10239)                      = 0
wait4(770, [{WIFEXITED(s) && WEXITSTATUS(s) == 255}], 0, NULL) = 770
close(5)                                = 0
close(6)                                = 0
close(4)                                = 0
munmap(0x2b8f524f5000, 4096)            = 0
exit_group(0xff00, 0xff00, 0x2b8f52926cc0, 0x2b8f52940e08, 0x2b8f52943760 <unfinished ... exit status 0>