Messages in this thread | | | Date | Tue, 12 Nov 2013 08:39:20 +0800 | From | Brad Campbell <> | Subject | Re: 3.12: raid-1 mismatch_cnt question |
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On 11/07/2013 06:54 PM, Justin Piszcz wrote: > On Mon, Nov 4, 2013 at 5:25 AM, Justin Piszcz <jpiszcz@lucidpixels.com> wrote: >> Hi, >> >> I run two SSDs in a RAID-1 configuration and I have a swap partition on a >> third SSD. Over time, the mismatch_cnt between the two devices grows higher >> and higher. >>
Are both SSD's identical? Do you have discard enabled on the filesystem?
The reason I ask is I have a RAID10 comprised of 3 Intel and 3 Samsung SSD's. The Intel return 0 after TRIM while the Samsung don't, so I _always_ have a massive mismatch_cnt after I run fstrim. I never use a repair operation as it's just going to re-write the already trimmed sectors.
Just a thought.
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