Ubuntu 11.10 does not enter 'discard' filesystem option on ext4 install on SSD drive
Bug #867794 reported by
Mark East
This bug affects 23 people
Affects | Status | Importance | Assigned to | Milestone | |
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ubiquity (Ubuntu) |
Confirmed
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Wishlist
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Unassigned |
Bug Description
I installed 11.10 the other day on my Macbook Air which has an SSD drive. Once installed I inspected the ftab and I noticed that it did not include the 'discard' option on my ext4 filesystem partition. The discard option enables TRIM support for SSD drives (I realise a lot of them now have TRIM support in the hardware but for those that don't but do support TRIM, they need this option) which prolongs their lives and keeps performance optimal, as it can degrade over time. The SSD drive should be detected at installation time and then this option added to the fstab.
discard/TRIM is off by default, as the manpage says, "until sufficient testing has been done."