$ sudo strace tree -sh /tmp/rbd_temp_rbd0
execve("/usr/bin/tree", ["tree", "-sh", "/tmp/rbd_temp_rbd0"], 0x7ffef1292230 /* 17 vars */) = 0
brk(NULL)                               = 0x55a8e5ad1000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=66577, ...}) = 0
mmap(NULL, 66577, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fae32e4e000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\34\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1881992, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fae32e4c000
mmap(NULL, 3988192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fae3286b000
mprotect(0x7fae32a2f000, 2097152, PROT_NONE) = 0
mmap(0x7fae32c2f000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c4000) = 0x7fae32c2f000
mmap(0x7fae32c35000, 15072, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fae32c35000
close(3)                                = 0
arch_prctl(ARCH_SET_FS, 0x7fae32e4d540) = 0
mprotect(0x7fae32c2f000, 16384, PROT_READ) = 0
mprotect(0x55a8e4245000, 4096, PROT_READ) = 0
mprotect(0x7fae32e5f000, 4096, PROT_READ) = 0
munmap(0x7fae32e4e000, 66577)           = 0
brk(NULL)                               = 0x55a8e5ad1000
brk(0x55a8e5af2000)                     = 0x55a8e5af2000
openat(AT_FDCWD, "/usr/lib64/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1683056, ...}) = 0
mmap(NULL, 1683056, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fae32cb1000
close(3)                                = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
lstat("/tmp/rbd_temp_rbd0", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 5), ...}) = 0
openat(AT_FDCWD, "/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=26360, ...}) = 0
mmap(NULL, 26360, PROT_READ, MAP_SHARED, 3, 0) = 0x7fae32e58000
close(3)                                = 0
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
getdents(3, /* 6 entries */, 32768)     = 176
lstat("/tmp/rbd_temp_rbd0/home.img", {st_mode=S_IFREG|0777, st_size=1073741824, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/savedata", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/lost+found", {st_mode=S_IFDIR|0700, st_size=16384, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\33[01;34m/tmp/rbd_temp_rbd0\33[00m\n", 32/tmp/rbd_temp_rbd0
) = 32
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
getdents(3, /* 15 entries */, 32768)    = 464
lstat("/tmp/rbd_temp_rbd0/download/CUSA06915", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA00967", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA01164", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA08500", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA02737", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA02671", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA01166", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA01104", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA05489", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA04045", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA01338", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA06807", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
lstat("/tmp/rbd_temp_rbd0/download/CUSA05012", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;34mdownlo"..., 40├── [4.0K]  download
) = 40
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA00967", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA00967/download0.dat", {st_mode=S_IFREG|0777, st_size=536870912, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA00967
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [512M]"..., 61│   │   └── [512M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA01104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA01104/download0.dat", {st_mode=S_IFREG|0777, st_size=67108864, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA01104
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [ 64M]"..., 61│   │   └── [ 64M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA01164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA01164/download0.dat", {st_mode=S_IFREG|0777, st_size=67108864, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA01164
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [ 64M]"..., 61│   │   └── [ 64M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA01166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA01166/download0.dat", {st_mode=S_IFREG|0777, st_size=67108864, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA01166
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [ 64M]"..., 61│   │   └── [ 64M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA01338", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA01338/download0.dat", {st_mode=S_IFREG|0777, st_size=536870912, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA01338
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [512M]"..., 61│   │   └── [512M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA02671", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA02671/download0.dat", {st_mode=S_IFREG|0777, st_size=1073741824, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA02671
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [1.0G]"..., 61│   │   └── [1.0G]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA02737", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA02737/download0.dat", {st_mode=S_IFREG|0777, st_size=268435456, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA02737
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [256M]"..., 61│   │   └── [256M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA04045", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA04045/download0.dat", {st_mode=S_IFREG|0777, st_size=134217728, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA04045
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [128M]"..., 61│   │   └── [128M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA05012", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA05012/download0.dat", {st_mode=S_IFREG|0777, st_size=67108864, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA05012
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [ 64M]"..., 61│   │   └── [ 64M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA05489", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA05489/download0.dat", {st_mode=S_IFREG|0777, st_size=536870912, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA05489
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [512M]"..., 61│   │   └── [512M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA06807", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA06807/download0.dat", {st_mode=S_IFREG|0777, st_size=268435456, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA06807
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [256M]"..., 61│   │   └── [256M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA06915", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA06915/download0.dat", {st_mode=S_IFREG|0777, st_size=134217728, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\234\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   ├── [4.0K]  CUSA06915
) = 49
write(1, "\342\224\202\302\240\302\240 \342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [128M]"..., 61│   │   └── [128M]  download0.dat
) = 61
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/download/CUSA08500", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents(3, /* 3 entries */, 32768)     = 88
lstat("/tmp/rbd_temp_rbd0/download/CUSA08500/download0.dat", {st_mode=S_IFREG|0777, st_size=5368709120, ...}) = 0
getdents(3, /* 0 entries */, 32768)     = 0
close(3)                                = 0
write(1, "\342\224\202\302\240\302\240 \342\224\224\342\224\200\342\224\200 [4.0K]  \33[01;3"..., 49│   └── [4.0K]  CUSA08500
) = 49
write(1, "\342\224\202\302\240\302\240     \342\224\224\342\224\200\342\224\200 [5.0G]  \33["..., 57│       └── [5.0G]  download0.dat
) = 57
write(1, "\342\224\234\342\224\200\342\224\200 [1.0G]  \33[01;32mhome.i"..., 40├── [1.0G]  home.img
) = 40
openat(AT_FDCWD, "/tmp/rbd_temp_rbd0/lost+found", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=16384, ...}) = 0
getdents(3