Description of problem: Changing mount options on mounted partitions described in following mail using 'mount -o remount' command does not work. http://www.spinics.net/lists/linux-fsdevel/msg86233.html # mount | grep sda /dev/sda1 on / type ext4 (rw,relatime,lazytime,seclabel,data=ordered) /dev/sda3 on /home type ext4 (rw,relatime,lazytime,seclabel,data=ordered) # mount -o remount,nolazymount /dev/sda3 mount: /home not mounted or bad option In some cases useful info is found in syslog - try dmesg | tail or so. # mount -o remount,lazymount /dev/sda3 mount: /home not mounted or bad option In some cases useful info is found in syslog - try journalctl: Kol 19 03:24:28 computer kernel: EXT4-fs (sda3): Unrecognized mount option "nolazymount" or missing value Kol 19 03:26:51 computer kernel: EXT4-fs (sda3): Unrecognized mount option "lazymount" or missing value Version-Release number of selected component (if applicable): util-linux-2.26.2-1.fc22.x86_64 kernel-4.1.4-200.fc22.x86_64
(In reply to Josh Boyer from comment #1) > (In reply to semiRocket from comment #0) > > Description of problem: By adding lazytime mount option to fstab and > > rebooting, mount command shows lazytime applied only to /home partition, not > > on /. > > > Moreover changing mount options on mounted partitions described in > > following mail using mount -o remount command does not work at all. > > http://article.gmane.org/gmane.comp.file-systems.ext4/48663 > > suggests that the remount issue is a regression in util-linux. You should > probably file a separate bug against that component to get it fixed. Seems is the issue.
(In reply to semiRocket from comment #0) > Kol 19 03:24:28 computer kernel: EXT4-fs (sda3): Unrecognized mount option > "nolazymount" or missing value It's "lazytime", no "lazymount". Anyway, it seems that ext4 kernel driver does not support nolazytime remount. It seems that the code allows to enable lazytime only. I'll try to talk abou tit with ext4 developers.
It was late when I was doing report. I was wondering why I was suddenly getting that dmesg output :D Yes you are right, sorry. The issue I am getting is this one: # mount | grep sda /dev/sda1 on / type ext4 (rw,relatime,lazytime,seclabel,data=ordered) /dev/sda3 on /home type ext4 (rw,relatime,lazytime,seclabel,data=ordered) # mount -o remount,nolazytime /dev/sda3 # mount | grep sda /dev/sda1 on / type ext4 (rw,relatime,lazytime,seclabel,data=ordered) /dev/sda3 on /home type ext4 (rw,relatime,lazytime,seclabel,data=ordered) dmesg | tail -1 [ 7273.392922] EXT4-fs (sda3): re-mounted. Opts: (null)