diff --git a/dvc/ignore.py b/dvc/ignore.py
index fe78b649f..3d111e868 100644
--- a/dvc/ignore.py
+++ b/dvc/ignore.py
@@ -6,6 +6,7 @@ import os
 from pathspec import PathSpec
 from pathspec.patterns import GitWildMatchPattern
 
+from dvc.utils import dvc_walk
 from dvc.utils import relpath
 from dvc.utils.compat import open
 
@@ -47,6 +48,9 @@ class DvcIgnorePatterns(DvcIgnore):
         return hash(self.ignore_file_path)
 
     def __eq__(self, other):
+        if not isinstance(other, DvcIgnorePatterns):
+            return NotImplemented
+
         return self.ignore_file_path == other.ignore_file_path
 
 
@@ -59,12 +63,21 @@ class DvcIgnoreDirs(DvcIgnore):
 
         return dirs, files
 
+    def __hash__(self):
+        return hash(tuple(self.basenames))
+
+    def __eq__(self, other):
+        if not isinstance(other, DvcIgnoreDirs):
+            return NotImplemented
+
+        return self.basenames == other.basenames
+
 
 class DvcIgnoreFilter(object):
     def __init__(self, root_dir):
         self.ignores = {DvcIgnoreDirs([".git", ".hg", ".dvc"])}
         self._update(root_dir)
-        for root, dirs, _ in os.walk(root_dir):
+        for root, dirs, _ in dvc_walk(root_dir, self):
             for d in dirs:
                 self._update(os.path.join(root, d))
 

dvc: .dvcignore trouble with nfs mounted directory
I have a large NFS mounted in a directory that I would like dvc to ignore. 

Directory Structure:
```
directory
|___nfs
|___...
|___.dvc
|___.dvcignore
```
My *.dvcignore* has the following line:
`/nfs/` (I've tried `nfs/` and `nfs/*`)

The problem is that when I run `dvc status` or `dvc pull` the processes will just hang:
```
DEBUG: PRAGMA user_version;
DEBUG: fetched: [(3,)]
DEBUG: CREATE TABLE IF NOT EXISTS state (inode INTEGER PRIMARY KEY, mtime TEXT NOT NULL, size TEXT NOT NULL, md5 TEXT NOT NULL, timestamp TEXT NOT NULL)
DEBUG: CREATE TABLE IF NOT EXISTS state_info (count INTEGER)
DEBUG: CREATE TABLE IF NOT EXISTS link_state (path TEXT PRIMARY KEY, inode INTEGER NOT NULL, mtime TEXT NOT NULL)
DEBUG: INSERT OR IGNORE INTO state_info (count) SELECT 0 WHERE NOT EXISTS (SELECT * FROM state_info)
DEBUG: PRAGMA user_version = 3; 
```

Here is the traceback from `KeyboardInterrupt`:
```
   File "/home/ec2-user/app/proc/.env/lib/python3.7/site-packages/dvc/repo/__init__.py", line 499, in dvcignore
    return DvcIgnoreFilter(self.root_dir)
  File "/home/ec2-user/app/proc/.env/lib/python3.7/site-packages/dvc/ignore.py", line 67, in __init__
    for root, dirs, _ in os.walk(root_dir):
  File "/home/ec2-user/app/proc/.env/lib64/python3.7/os.py", line 410, in walk
    yield from walk(new_path, topdown, onerror, followlinks)
  File "/home/ec2-user/app/proc/.env/lib64/python3.7/os.py", line 368, in walk
    is_dir = entry.is_dir() 
```
Which makes me feel like the directory is not being ignored.

***Additonal***
I've unmounted the NFS directory and ran `dvc status` with no problem so I believe the issue stems from dvc trying to traverse it.

System Information:
``` 
DVC version: 0.66.6
Python version: 3.7.4
Platform: Linux 4.14.109-99.92.amzn2.x86_64
Installation: pip
```


diff --git a/tests/func/test_ignore.py b/tests/func/test_ignore.py
index 2b5fec7e9..6e38c2b02 100644
--- a/tests/func/test_ignore.py
+++ b/tests/func/test_ignore.py
@@ -5,6 +5,9 @@ import pytest
 
 from dvc.exceptions import DvcIgnoreInCollectedDirError
 from dvc.ignore import DvcIgnore
+from dvc.ignore import DvcIgnoreDirs
+from dvc.ignore import DvcIgnoreFilter
+from dvc.ignore import DvcIgnorePatterns
 from dvc.utils.compat import cast_bytes
 from dvc.utils.fs import get_mtime_and_size
 from tests.basic_env import TestDvc
@@ -131,3 +134,21 @@ def test_should_raise_on_dvcignore_in_out_dir(dvc_repo, repo_dir):
 
     with pytest.raises(DvcIgnoreInCollectedDirError):
         dvc_repo.add(repo_dir.DATA_DIR)
+
+
+@pytest.mark.parametrize("dname", [TestDvc.DATA_DIR, TestDvc.DATA_SUB_DIR])
+def test_ignore_collecting_dvcignores(repo_dir, dname):
+    top_ignore_file = os.path.join(
+        repo_dir.root_dir, os.path.dirname(dname), DvcIgnore.DVCIGNORE_FILE
+    )
+    repo_dir.create(top_ignore_file, os.path.basename(dname))
+
+    ignore_file = os.path.join(
+        repo_dir.root_dir, dname, DvcIgnore.DVCIGNORE_FILE
+    )
+    repo_dir.create(ignore_file, repo_dir.FOO)
+
+    assert DvcIgnoreFilter(repo_dir.root_dir).ignores == {
+        DvcIgnoreDirs([".git", ".hg", ".dvc"]),
+        DvcIgnorePatterns(top_ignore_file),
+    }

pip install -e .[all]
parse_log_pytest
pytest
pytest pytest-timeout pytest-cov pytest-xdist pytest-mock flaky mock xmltodict awscli google-compute-engine Pygments collective.checkdocs flake8 psutil flake8-docstrings pydocstyle jaraco.windows mock-ssh-server moto rangehttpserver
apt-get update apt-get install -y gcc
3.7
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
aliyun-python-sdk-core==2.16.0
aliyun-python-sdk-core-v3==2.13.33
aliyun-python-sdk-kms==2.16.5
appdirs==1.4.4
asciimatics==1.14.0
atpublic==3.1.2
attrs @ file:///croot/attrs_1668696182826/work
autocommand==2.2.2
awscli==1.31.13
azure-common==1.1.28
azure-storage-blob==2.1.0
azure-storage-common==2.1.0
bcrypt==4.2.1
boto==2.49.0
boto3==1.9.115
botocore==1.12.253
cachetools==4.2.4
certifi @ file:///croot/certifi_1671487769961/work/certifi
cffi==1.15.1
charset-normalizer==3.4.1
collective.checkdocs==0.2
colorama==0.4.4
configobj==5.0.9
configparser==5.3.0
coverage==7.2.7
crcmod==1.7
cryptography==44.0.2
decorator==5.1.1
distro==1.9.0
docutils==0.15.2
-e git+https://github.com/iterative/dvc.git@5e2fa3742b7b98327e131fd7d0025371b5322d4f#egg=dvc
execnet==2.0.2
flake8==5.0.4
flake8-docstrings==1.7.0
flaky==3.8.1
flit_core @ file:///opt/conda/conda-bld/flit-core_1644941570762/work/source/flit_core
flufl.lock==7.1.1
funcy==2.0
future==1.0.0
gitdb==4.0.12
gitdb2==4.0.2
GitPython==3.1.44
google-api-core==2.10.2
google-auth==1.35.0
google-cloud-core==1.7.3
google-cloud-storage==1.19.0
google-compute-engine==2.8.13
google-crc32c==1.5.0
google-resumable-media==2.7.2
googleapis-common-protos==1.69.2
grandalf==0.6
humanize==4.6.0
idna==3.10
importlib-metadata==4.2.0
importlib-resources==5.12.0
inflect==6.0.5
iniconfig @ file:///home/linux1/recipes/ci/iniconfig_1610983019677/work
jaraco.classes==3.2.3
jaraco.collections==4.2.0
jaraco.context==4.3.0
jaraco.functools==3.7.0
jaraco.structures==2.1.0
jaraco.text==3.11.1
jaraco.ui==2.3.0
jaraco.windows==5.7.0
Jinja2==3.1.6
jmespath==0.10.0
jsonpath-ng==1.7.0
MarkupSafe==2.1.5
mccabe==0.7.0
mock==5.2.0
mock-ssh-server==0.9.1
more-itertools==9.1.0
moto==4.2.14
nanotime==0.5.2
networkx==2.3
numpy==1.21.6
oss2==2.6.1
packaging @ file:///croot/packaging_1671697413597/work
paramiko==3.5.1
path==16.6.0
pathspec==0.11.2
Pillow==9.5.0
pluggy @ file:///tmp/build/80754af9/pluggy_1648042572264/work
ply==3.11
protobuf==4.24.4
psutil==7.0.0
py @ file:///opt/conda/conda-bld/py_1644396412707/work
pyarrow==0.14.0
pyasn1==0.5.1
pyasn1-modules==0.3.0
pycodestyle==2.9.1
pycparser==2.21
pycryptodome==3.22.0
pydantic==1.10.21
pydocstyle==6.3.0
pyfiglet==0.8.post1
pyflakes==2.5.0
Pygments==2.17.2
PyNaCl==1.5.0
pyparsing==3.1.4
pytest==7.1.2
pytest-cov==4.1.0
pytest-mock==3.11.1
pytest-timeout==2.3.1
pytest-xdist==3.5.0
python-dateutil==2.9.0.post0
PyYAML==6.0.1
rangehttpserver==1.4.0
requests==2.31.0
responses==0.23.3
rsa==4.7.2
ruamel.yaml==0.18.10
ruamel.yaml.clib==0.2.8
s3transfer==0.2.1
schema==0.7.7
shortuuid==1.0.13
six==1.17.0
smmap==5.0.2
snowballstemmer==2.2.0
tomli @ file:///opt/conda/conda-bld/tomli_1657175507142/work
tqdm==4.67.1
treelib==1.7.1
types-PyYAML==6.0.12.12
typing_extensions @ file:///croot/typing_extensions_1669924550328/work
urllib3==1.25.11
wcwidth==0.2.13
Werkzeug==2.2.3
xmltodict==0.14.2
zipp @ file:///croot/zipp_1672387121353/work

name: dvc
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - attrs=22.1.0=py37h06a4308_0
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2022.12.7=py37h06a4308_0
  - flit-core=3.6.0=pyhd3eb1b0_0
  - importlib_metadata=4.11.3=hd3eb1b0_0
  - iniconfig=1.1.1=pyhd3eb1b0_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - packaging=22.0=py37h06a4308_0
  - pip=22.3.1=py37h06a4308_0
  - pluggy=1.0.0=py37h06a4308_1
  - py=1.11.0=pyhd3eb1b0_0
  - pytest=7.1.2=py37h06a4308_0
  - python=3.7.16=h7a1cb2a_0
  - readline=8.2=h5eee18b_0
  - setuptools=65.6.3=py37h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - tomli=2.0.1=py37h06a4308_0
  - typing_extensions=4.4.0=py37h06a4308_0
  - wheel=0.38.4=py37h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zipp=3.11.0=py37h06a4308_0
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - aliyun-python-sdk-core==2.16.0
      - aliyun-python-sdk-core-v3==2.13.33
      - aliyun-python-sdk-kms==2.16.5
      - appdirs==1.4.4
      - asciimatics==1.14.0
      - atpublic==3.1.2
      - autocommand==2.2.2
      - awscli==1.31.13
      - azure-common==1.1.28
      - azure-storage-blob==2.1.0
      - azure-storage-common==2.1.0
      - bcrypt==4.2.1
      - boto==2.49.0
      - boto3==1.9.115
      - botocore==1.12.253
      - cachetools==4.2.4
      - cffi==1.15.1
      - charset-normalizer==3.4.1
      - collective-checkdocs==0.2
      - colorama==0.4.4
      - configobj==5.0.9
      - configparser==5.3.0
      - coverage==7.2.7
      - crcmod==1.7
      - cryptography==44.0.2
      - decorator==5.1.1
      - distro==1.9.0
      - docutils==0.15.2
      - dvc==0.66.6+5e2fa3
      - execnet==2.0.2
      - flake8==5.0.4
      - flake8-docstrings==1.7.0
      - flaky==3.8.1
      - flufl-lock==7.1.1
      - funcy==2.0
      - future==1.0.0
      - gitdb==4.0.12
      - gitdb2==4.0.2
      - gitpython==3.1.44
      - google-api-core==2.10.2
      - google-auth==1.35.0
      - google-cloud-core==1.7.3
      - google-cloud-storage==1.19.0
      - google-compute-engine==2.8.13
      - google-crc32c==1.5.0
      - google-resumable-media==2.7.2
      - googleapis-common-protos==1.69.2
      - grandalf==0.6
      - humanize==4.6.0
      - idna==3.10
      - importlib-metadata==4.2.0
      - importlib-resources==5.12.0
      - inflect==6.0.5
      - jaraco-classes==3.2.3
      - jaraco-collections==4.2.0
      - jaraco-context==4.3.0
      - jaraco-functools==3.7.0
      - jaraco-structures==2.1.0
      - jaraco-text==3.11.1
      - jaraco-ui==2.3.0
      - jaraco-windows==5.7.0
      - jinja2==3.1.6
      - jmespath==0.10.0
      - jsonpath-ng==1.7.0
      - markupsafe==2.1.5
      - mccabe==0.7.0
      - mock==5.2.0
      - mock-ssh-server==0.9.1
      - more-itertools==9.1.0
      - moto==4.2.14
      - nanotime==0.5.2
      - networkx==2.3
      - numpy==1.21.6
      - oss2==2.6.1
      - paramiko==3.5.1
      - path==16.6.0
      - pathspec==0.11.2
      - pillow==9.5.0
      - ply==3.11
      - protobuf==4.24.4
      - psutil==7.0.0
      - pyarrow==0.14.0
      - pyasn1==0.5.1
      - pyasn1-modules==0.3.0
      - pycodestyle==2.9.1
      - pycparser==2.21
      - pycryptodome==3.22.0
      - pydantic==1.10.21
      - pydocstyle==6.3.0
      - pyfiglet==0.8.post1
      - pyflakes==2.5.0
      - pygments==2.17.2
      - pynacl==1.5.0
      - pyparsing==3.1.4
      - pytest-cov==4.1.0
      - pytest-mock==3.11.1
      - pytest-timeout==2.3.1
      - pytest-xdist==3.5.0
      - python-dateutil==2.9.0.post0
      - pyyaml==6.0.1
      - rangehttpserver==1.4.0
      - requests==2.31.0
      - responses==0.23.3
      - rsa==4.7.2
      - ruamel-yaml==0.18.10
      - ruamel-yaml-clib==0.2.8
      - s3transfer==0.2.1
      - schema==0.7.7
      - shortuuid==1.0.13
      - six==1.17.0
      - smmap==5.0.2
      - snowballstemmer==2.2.0
      - tqdm==4.67.1
      - treelib==1.7.1
      - types-pyyaml==6.0.12.12
      - urllib3==1.25.11
      - wcwidth==0.2.13
      - werkzeug==2.2.3
      - xmltodict==0.14.2
prefix: /opt/conda/envs/dvc

tests/func/test_ignore.py::test_ignore_collecting_dvcignores[data_dir] tests/func/test_ignore.py::test_ignore_collecting_dvcignores[data_dir/data_sub_dir]
tests/func/test_ignore.py::TestDvcIgnore::test_ignore_in_child_dir tests/func/test_ignore.py::TestDvcIgnore::test_ignore_in_child_dir_unicode tests/func/test_ignore.py::TestDvcIgnore::test_ignore_in_parent_dir
dvc/ignore.py
dvc/ignore.py