Re: SSD journal partition and trim

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On Tue, Dec 03, 2013 at 12:38:54PM +0000, James Pearce wrote:
> Since the journal partitions are generally small, it shouldn't need
> to be.
> 

here with 2 journals (2 osds) on two ssd (samsung 850 pro, soft raid1 +
lvm + xfs) trim is just obligatory. We forget to set it at cluster setup
and one week later, after migrating a lot of VM, the performances
dropped to something like 10MB/s. Running fstrim on it gave back normal
performances.

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