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List effective values of all existing mount options for a partition?



The 2019 Stack Overflow Developer Survey Results Are InWhat's the most “correct” mount point for a permanent NTFS partition?Option “user” work for mount, not for umountmount options for bindmountconfusion about mount optionsmount: fmask options is not workingHow is findmnt able to list bind mounts?Set default mount options for usbMount several directories in the same partition, AND hide base pathHow to exclude bind mounts from findmnt results list?Mount points and nodev options



.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








-1















The mount command and cat /proc/mounts only list those mount options that have values different than default.



How can I obtain (for a given mounted partition) an exhaustive list of the applied values of all the mount options that the partition's filesystem defines? Think "computed style" but for a mounted partition rather than a HTML element ;)










share|improve this question



















  • 2





    On which version of which operating system?

    – Barry Jones
    Apr 6 at 2:55












  • Does this help: sudo tune2fs -l <device>

    – RubberStamp
    Apr 6 at 13:37

















-1















The mount command and cat /proc/mounts only list those mount options that have values different than default.



How can I obtain (for a given mounted partition) an exhaustive list of the applied values of all the mount options that the partition's filesystem defines? Think "computed style" but for a mounted partition rather than a HTML element ;)










share|improve this question



















  • 2





    On which version of which operating system?

    – Barry Jones
    Apr 6 at 2:55












  • Does this help: sudo tune2fs -l <device>

    – RubberStamp
    Apr 6 at 13:37













-1












-1








-1








The mount command and cat /proc/mounts only list those mount options that have values different than default.



How can I obtain (for a given mounted partition) an exhaustive list of the applied values of all the mount options that the partition's filesystem defines? Think "computed style" but for a mounted partition rather than a HTML element ;)










share|improve this question
















The mount command and cat /proc/mounts only list those mount options that have values different than default.



How can I obtain (for a given mounted partition) an exhaustive list of the applied values of all the mount options that the partition's filesystem defines? Think "computed style" but for a mounted partition rather than a HTML element ;)







linux mount






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited yesterday









sourcejedi

25.8k445113




25.8k445113










asked Apr 5 at 20:07









Szczepan HołyszewskiSzczepan Hołyszewski

1443




1443







  • 2





    On which version of which operating system?

    – Barry Jones
    Apr 6 at 2:55












  • Does this help: sudo tune2fs -l <device>

    – RubberStamp
    Apr 6 at 13:37












  • 2





    On which version of which operating system?

    – Barry Jones
    Apr 6 at 2:55












  • Does this help: sudo tune2fs -l <device>

    – RubberStamp
    Apr 6 at 13:37







2




2





On which version of which operating system?

– Barry Jones
Apr 6 at 2:55






On which version of which operating system?

– Barry Jones
Apr 6 at 2:55














Does this help: sudo tune2fs -l <device>

– RubberStamp
Apr 6 at 13:37





Does this help: sudo tune2fs -l <device>

– RubberStamp
Apr 6 at 13:37










1 Answer
1






active

oldest

votes


















1














The generic Linux mount interface does not provide any more information about this.



The default generic mount options are rw,suid,dev,exec,async. (I looked in man mount for the definition of defaults, and removed anything that was not a kernel mount flag).



To take one popular example, the ext4 filesystem does not show the full list of default ext4 options in /proc/mounts. You should be able to work out most of the defaults just from reading the "Mount options" sections in man ext4. This is a lot of reading :-). It also says it could vary depending on the kernel version. For the ones it does not specify, it appears that:




  • acl is enabled by default, if the kernel was built with support for it (CONFIG_EXT4_FS_POSIX_ACL=y).


  • delalloc is enabled by default for filesystems created as ext4.


  • auto_da_alloc is enabled by default.





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    1 Answer
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    oldest

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    active

    oldest

    votes






    active

    oldest

    votes









    1














    The generic Linux mount interface does not provide any more information about this.



    The default generic mount options are rw,suid,dev,exec,async. (I looked in man mount for the definition of defaults, and removed anything that was not a kernel mount flag).



    To take one popular example, the ext4 filesystem does not show the full list of default ext4 options in /proc/mounts. You should be able to work out most of the defaults just from reading the "Mount options" sections in man ext4. This is a lot of reading :-). It also says it could vary depending on the kernel version. For the ones it does not specify, it appears that:




    • acl is enabled by default, if the kernel was built with support for it (CONFIG_EXT4_FS_POSIX_ACL=y).


    • delalloc is enabled by default for filesystems created as ext4.


    • auto_da_alloc is enabled by default.





    share|improve this answer





























      1














      The generic Linux mount interface does not provide any more information about this.



      The default generic mount options are rw,suid,dev,exec,async. (I looked in man mount for the definition of defaults, and removed anything that was not a kernel mount flag).



      To take one popular example, the ext4 filesystem does not show the full list of default ext4 options in /proc/mounts. You should be able to work out most of the defaults just from reading the "Mount options" sections in man ext4. This is a lot of reading :-). It also says it could vary depending on the kernel version. For the ones it does not specify, it appears that:




      • acl is enabled by default, if the kernel was built with support for it (CONFIG_EXT4_FS_POSIX_ACL=y).


      • delalloc is enabled by default for filesystems created as ext4.


      • auto_da_alloc is enabled by default.





      share|improve this answer



























        1












        1








        1







        The generic Linux mount interface does not provide any more information about this.



        The default generic mount options are rw,suid,dev,exec,async. (I looked in man mount for the definition of defaults, and removed anything that was not a kernel mount flag).



        To take one popular example, the ext4 filesystem does not show the full list of default ext4 options in /proc/mounts. You should be able to work out most of the defaults just from reading the "Mount options" sections in man ext4. This is a lot of reading :-). It also says it could vary depending on the kernel version. For the ones it does not specify, it appears that:




        • acl is enabled by default, if the kernel was built with support for it (CONFIG_EXT4_FS_POSIX_ACL=y).


        • delalloc is enabled by default for filesystems created as ext4.


        • auto_da_alloc is enabled by default.





        share|improve this answer















        The generic Linux mount interface does not provide any more information about this.



        The default generic mount options are rw,suid,dev,exec,async. (I looked in man mount for the definition of defaults, and removed anything that was not a kernel mount flag).



        To take one popular example, the ext4 filesystem does not show the full list of default ext4 options in /proc/mounts. You should be able to work out most of the defaults just from reading the "Mount options" sections in man ext4. This is a lot of reading :-). It also says it could vary depending on the kernel version. For the ones it does not specify, it appears that:




        • acl is enabled by default, if the kernel was built with support for it (CONFIG_EXT4_FS_POSIX_ACL=y).


        • delalloc is enabled by default for filesystems created as ext4.


        • auto_da_alloc is enabled by default.






        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Apr 6 at 18:32

























        answered Apr 6 at 18:13









        sourcejedisourcejedi

        25.8k445113




        25.8k445113



























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