on 27/11/2013 18:17 Andriy Gapon said the following:
> on 26/11/2013 11:57 Andriy Gapon said the following:
>> Author: avg
>> Date: Tue Nov 26 09:57:14 2013
>> New Revision: 258632
>> URL: http://svnweb.freebsd.org/changeset/base/258632
>> Log:
>>   MFV r255255: 4045 zfs write throttle & i/o scheduler performance work
>>   illumos/illumos-gate@69962b5647e4a8b9b14998733b765925381b727e
>>   Please note the following changes:
>>   - zio_ioctl has lost its priority parameter and now TRIM is executed
>>     with 'now' priority
>>   - some knobs are gone and some new knobs are added; not all of them are
>>     exposed as tunables / sysctls yet
>>   MFC after: 10 days
>>   Sponsored by:      HybridCluster [merge]
> I think that I've introduced a very serious bug when merging this change.
> Please do not upgrade to this revision if you use ZFS with SSDs and have TRIM
> support enabled.
> If you have already upgraded, please disable TRIM support ASAP and roll back 
> to
> a previous version of kernel and then check integrity of your pools.

The issue should be fixed in r258704.
Yes, the bug was that simple and that serious.
My apologies to all who were affected.

Andriy Gapon
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