XFS and trim

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Hi all,

Firstly, Please CC me into replies as I'm not subscribed to this list.

I'm trying to confirm that Fedora 18 has enabled trim for XFS filesystems. I have added discard to the mount options in /etc/fstab - however I do not see it when looking at the output of 'mount':

UUID=b95a7b45-d197-45c0-a7d6-c13f930a38b3 / xfs defaults,discard 0 1

/dev/sda2 on / type xfs (rw,relatime,attr2,inode64,noquota)

fstrim shows that trim is at least enabled, but I am unable to confirm if it is done in realtime, or I am required to run fstrim manually.

# fstrim -v /
/: 48919015424 bytes were trimmed

Can anyone share some insight into this?

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Steven Haigh

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