How can you umount `/home`?
When log in Lubuntu, I can't
$ sudo umount /home
umount: /home: target is busy.
where /home itself is a mount point of a filesystem.
How can you umount /home?
/ can't be umounted, because OS is running from it. Can /home be easier to be umounted?
Thanks.
filesystems mount
edited Feb 23 at 23:57
Kusalananda
135k17255422
asked Feb 23 at 23:27
TimTim
27.7k78265483
add a comment |
When log in Lubuntu, I can't
$ sudo umount /home
umount: /home: target is busy.
where /home itself is a mount point of a filesystem.
How can you umount /home?
/ can't be umounted, because OS is running from it. Can /home be easier to be umounted?
Thanks.
filesystems mount
edited Feb 23 at 23:57
Kusalananda
135k17255422
asked Feb 23 at 23:27
TimTim
27.7k78265483
Linux don't allow you to umount a mount point if there's still some living reference to it.
– 炸鱼薯条德里克
Feb 24 at 2:23
add a comment |
When log in Lubuntu, I can't
$ sudo umount /home
umount: /home: target is busy.
where /home itself is a mount point of a filesystem.
How can you umount /home?
/ can't be umounted, because OS is running from it. Can /home be easier to be umounted?
Thanks.
filesystems mount
edited Feb 23 at 23:57
Kusalananda
135k17255422
asked Feb 23 at 23:27
TimTim
27.7k78265483
When log in Lubuntu, I can't
$ sudo umount /home
umount: /home: target is busy.
where /home itself is a mount point of a filesystem.
How can you umount /home?
/ can't be umounted, because OS is running from it. Can /home be easier to be umounted?
Thanks.
filesystems mount
filesystems mount
edited Feb 23 at 23:57
Kusalananda
135k17255422
asked Feb 23 at 23:27
TimTim
27.7k78265483
edited Feb 23 at 23:57
Kusalananda
135k17255422
asked Feb 23 at 23:27
TimTim
27.7k78265483
edited Feb 23 at 23:57
Kusalananda
135k17255422
edited Feb 23 at 23:57
Kusalananda
135k17255422
edited Feb 23 at 23:57
Kusalananda
135k17255422
135k17255422
asked Feb 23 at 23:27
TimTim
27.7k78265483
asked Feb 23 at 23:27
TimTim
27.7k78265483
asked Feb 23 at 23:27
TimTim
27.7k78265483
27.7k78265483
Linux don't allow you to umount a mount point if there's still some living reference to it.
– 炸鱼薯条德里克
Feb 24 at 2:23
add a comment |
Linux don't allow you to umount a mount point if there's still some living reference to it.
– 炸鱼薯条德里克
Feb 24 at 2:23
Linux don't allow you to umount a mount point if there's still some living reference to it.
– 炸鱼薯条德里克
Feb 24 at 2:23
Linux don't allow you to umount a mount point if there's still some living reference to it.
– 炸鱼薯条德里克
Feb 24 at 2:23
add a comment |
1 Answer
1
active
oldest
votes
You can unmount /home if it's an independent file system. The Target is busy message means that there are either:
- files under
/homethat are still open - directories under
/homethat are the CWD of some process (this could be the shell from which you try to unmount/home) - a filesystem mounted on a mount point under
/home
For 1) and 2), the lsof command can help, but if you are using a GUI, you have very many files permanently open under /home/{your id} so unmounting /home is not going to be easy. If you log using a TTY instead of a GUI, you can better control what process are running with your id and what files are open.
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
Thanks. Do you think it is better to boot into a live Lubuntu so that the/homeon disk is not mounted by default?
– Tim
Feb 24 at 0:06
1
Yes, it could make things easier. But why do you want to unnount/home?.
– xenoid
Feb 24 at 0:49
2
I agree that it’ll be difficult if your logged in (even at the text console) as a user, if your ~ is on /home, but I want to warn you that even if you manage to log in as root, you might encounter a situation where /home is unmountable. If you use systemd and you have any services that have ProtectHome=read-only, it will have a bind mount of home that will prevent /home from being uncounted. It won’t show it in lsof, since it is a kernel syscall.
– jsbillings
Feb 24 at 1:13
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can unmount /home if it's an independent file system. The Target is busy message means that there are either:
- files under
/homethat are still open - directories under
/homethat are the CWD of some process (this could be the shell from which you try to unmount/home) - a filesystem mounted on a mount point under
/home
For 1) and 2), the lsof command can help, but if you are using a GUI, you have very many files permanently open under /home/{your id} so unmounting /home is not going to be easy. If you log using a TTY instead of a GUI, you can better control what process are running with your id and what files are open.
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
Thanks. Do you think it is better to boot into a live Lubuntu so that the/homeon disk is not mounted by default?
– Tim
Feb 24 at 0:06
1
Yes, it could make things easier. But why do you want to unnount/home?.
– xenoid
Feb 24 at 0:49
2
I agree that it’ll be difficult if your logged in (even at the text console) as a user, if your ~ is on /home, but I want to warn you that even if you manage to log in as root, you might encounter a situation where /home is unmountable. If you use systemd and you have any services that have ProtectHome=read-only, it will have a bind mount of home that will prevent /home from being uncounted. It won’t show it in lsof, since it is a kernel syscall.
– jsbillings
Feb 24 at 1:13
add a comment |
You can unmount /home if it's an independent file system. The Target is busy message means that there are either:
- files under
/homethat are still open - directories under
/homethat are the CWD of some process (this could be the shell from which you try to unmount/home) - a filesystem mounted on a mount point under
/home
For 1) and 2), the lsof command can help, but if you are using a GUI, you have very many files permanently open under /home/{your id} so unmounting /home is not going to be easy. If you log using a TTY instead of a GUI, you can better control what process are running with your id and what files are open.
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
Thanks. Do you think it is better to boot into a live Lubuntu so that the/homeon disk is not mounted by default?
– Tim
Feb 24 at 0:06
1
Yes, it could make things easier. But why do you want to unnount/home?.
– xenoid
Feb 24 at 0:49
2
I agree that it’ll be difficult if your logged in (even at the text console) as a user, if your ~ is on /home, but I want to warn you that even if you manage to log in as root, you might encounter a situation where /home is unmountable. If you use systemd and you have any services that have ProtectHome=read-only, it will have a bind mount of home that will prevent /home from being uncounted. It won’t show it in lsof, since it is a kernel syscall.
– jsbillings
Feb 24 at 1:13
add a comment |
You can unmount /home if it's an independent file system. The Target is busy message means that there are either:
- files under
/homethat are still open - directories under
/homethat are the CWD of some process (this could be the shell from which you try to unmount/home) - a filesystem mounted on a mount point under
/home
For 1) and 2), the lsof command can help, but if you are using a GUI, you have very many files permanently open under /home/{your id} so unmounting /home is not going to be easy. If you log using a TTY instead of a GUI, you can better control what process are running with your id and what files are open.
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
You can unmount /home if it's an independent file system. The Target is busy message means that there are either:
- files under
/homethat are still open - directories under
/homethat are the CWD of some process (this could be the shell from which you try to unmount/home) - a filesystem mounted on a mount point under
/home
For 1) and 2), the lsof command can help, but if you are using a GUI, you have very many files permanently open under /home/{your id} so unmounting /home is not going to be easy. If you log using a TTY instead of a GUI, you can better control what process are running with your id and what files are open.
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
answered Feb 23 at 23:45
xenoidxenoid
3,1651726
3,1651726
Thanks. Do you think it is better to boot into a live Lubuntu so that the/homeon disk is not mounted by default?
– Tim
Feb 24 at 0:06
1
Yes, it could make things easier. But why do you want to unnount/home?.
– xenoid
Feb 24 at 0:49
2
I agree that it’ll be difficult if your logged in (even at the text console) as a user, if your ~ is on /home, but I want to warn you that even if you manage to log in as root, you might encounter a situation where /home is unmountable. If you use systemd and you have any services that have ProtectHome=read-only, it will have a bind mount of home that will prevent /home from being uncounted. It won’t show it in lsof, since it is a kernel syscall.
– jsbillings
Feb 24 at 1:13
add a comment |
Thanks. Do you think it is better to boot into a live Lubuntu so that the/homeon disk is not mounted by default?
– Tim
Feb 24 at 0:06
1
Yes, it could make things easier. But why do you want to unnount/home?.
– xenoid
Feb 24 at 0:49
2
I agree that it’ll be difficult if your logged in (even at the text console) as a user, if your ~ is on /home, but I want to warn you that even if you manage to log in as root, you might encounter a situation where /home is unmountable. If you use systemd and you have any services that have ProtectHome=read-only, it will have a bind mount of home that will prevent /home from being uncounted. It won’t show it in lsof, since it is a kernel syscall.
– jsbillings
Feb 24 at 1:13
Thanks. Do you think it is better to boot into a live Lubuntu so that the
/home on disk is not mounted by default?– Tim
Feb 24 at 0:06
Thanks. Do you think it is better to boot into a live Lubuntu so that the
/home on disk is not mounted by default?– Tim
Feb 24 at 0:06
1
1
Yes, it could make things easier. But why do you want to unnount
/home?.– xenoid
Feb 24 at 0:49
Yes, it could make things easier. But why do you want to unnount
/home?.– xenoid
Feb 24 at 0:49
2
2
I agree that it’ll be difficult if your logged in (even at the text console) as a user, if your ~ is on /home, but I want to warn you that even if you manage to log in as root, you might encounter a situation where /home is unmountable. If you use systemd and you have any services that have ProtectHome=read-only, it will have a bind mount of home that will prevent /home from being uncounted. It won’t show it in lsof, since it is a kernel syscall.
– jsbillings
Feb 24 at 1:13
I agree that it’ll be difficult if your logged in (even at the text console) as a user, if your ~ is on /home, but I want to warn you that even if you manage to log in as root, you might encounter a situation where /home is unmountable. If you use systemd and you have any services that have ProtectHome=read-only, it will have a bind mount of home that will prevent /home from being uncounted. It won’t show it in lsof, since it is a kernel syscall.
– jsbillings
Feb 24 at 1:13
add a comment |
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Linux don't allow you to umount a mount point if there's still some living reference to it.
– 炸鱼薯条德里克
Feb 24 at 2:23