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Thread: Filesystems tuning

  1. #1
    Join Date
    May 2014
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    4

    Filesystems tuning

    What are the filesystem mount defaults for 14.04?

    Its just mentions defaults in mtab/fstab.

    Is relatime recommended? Does it break any programs like email clients and BACKUP?

    What other tuning can be done for ext4 filesystem so that system startup and in general speed is increased?

  2. #2
    Join Date
    Mar 2006
    Location
    Williams Lake
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: Filesystems tuning

    Seeing as this is a support question, moved to General Help.

  3. #3
    Join Date
    Aug 2011
    Location
    52° N 6° E
    Beans
    3,132
    Distro
    Xubuntu 16.04 Xenial Xerus

    Re: Filesystems tuning

    According to man fstab
    Code:
                  defaults
                         use default options: rw, suid, dev, exec,  auto,  nouser,
                         and async.
    The *atime options can be used to reduce writes, which is useful on devices with low write speed compared to read speed or limited write cycles (like SSDs). Also, some applications may need it. Default options are fine most of the time, but I don't know your specific case. From man mount
    Code:
           relatime
                  Update inode access times relative to  modify  or  change  time.
                  Access time is only updated if the previous access time was ear‐
                  lier than the current modify or change time. (Similar  to  noat‐
                  ime,  but  doesn't break mutt or other applications that need to
                  know if a file has been read since the last time  it  was  modi‐
                  fied.)
    
                  Since Linux 2.6.30, the kernel defaults to the behavior provided
                  by this option (unless noatime was  specified), and the stricta‐
                  time  option  is  required  to  obtain traditional semantics. In
                  addition, since Linux 2.6.30, the file's  last  access  time  is
                  always  updated  if  it  is more than 1 day old.
    So it seems default already.

  4. #4
    Join Date
    May 2014
    Beans
    4

    Re: Filesystems tuning

    @Impavidus ... Will chk and get back ... so all the defaults rw, suid, dev, exec, auto, nouser, and async are included? I doubt about async

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