Re: Mounting XFS with discard option only works for /boot but not /

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On 11/23/14 18:06, John Tall wrote:
> Hello.
>
> I am running the Fedora 21 beta on an SSD with /boot and / on XFS. I
> want to add the discard mount option to both of them, so I changed
> defaults to defaults,discard in /etc/fstab and rebooted. While /boot
> was mounted with the discard option / was not.
>
> This is my /etc/fstab, actual uuids redacted:
>
> UUID=... /                       xfs     defaults,discard        0 0
> UUID=... /boot                   xfs     defaults,discard        0 0
> UUID=... /boot/efi               vfat    umask=0077,shortname=winnt 0 0
> UUID=... swap                    swap    defaults        0 0
>
> I tried rebuilding the initramfs with dracut -fv, but after a reboot
> still only /boot is mounted with the discard option.
>
> # grep discard /proc/mounts
> /dev/sda2 /boot xfs rw,seclabel,relatime,attr2,discard,inode64,noquota 0 0
>
> The rest of the file systems look like this:
>
> # grep ^/ /proc/mounts
> /dev/sda4 / xfs rw,seclabel,relatime,attr2,inode64,noquota 0 0
> /dev/sda2 /boot xfs rw,seclabel,relatime,attr2,discard,inode64,noquota 0 0
> /dev/sda1 /boot/efi vfat
> rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro
> 0 0
>
> How do I mount / with the correct options?
>
> J

Maybe you're seeing this?

https://bbs.archlinux.org/viewtopic.php?id=143254

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