When will SXCE 129 be released since 128 was passed over? There used to
be a release calendar on opensolaris.org but I can't find it anymore.
Jeff Bonwick wrote:
And, for the record, this is my fault. There is an aspect of endianness
that I simply hadn't thought of. When I have a little more time I will
blog about the whole thing, because there are many useful lessons here.
Thank you, Matt, for all your help with this. And my apologies to
everyone else for the disruption.
Jeff
On Mon, Nov 23, 2009 at 09:15:48PM -0800, Matthew Ahrens wrote:
We discovered another, more fundamental problem with
dedup=fletcher4,verify. I've just putback the fix for:
6904243 zpool scrub/resilver doesn't work with cross-endian
dedup=fletcher4,verify blocks
The same instructions as below apply, but in addition, the
dedup=fletcher4,verify functionality has been removed. We will investigate
whether it's possible to fix these isses and re-enable this functionality.
--matt
Matthew Ahrens wrote:
If you did not do "zfs set dedup=fletcher4,verify <fs>" (which is
available in build 128 and nightly bits since then), you can ignore this
message.
We have changed the on-disk format of the pool when using
dedup=fletcher4,verify with the integration of:
6903705 dedup=fletcher4,verify doesn't byteswap correctly, has lots
of hash collisions
This is not the default dedup setting; pools that only used "zfs set
dedup=on" (or =sha256, or =verify, or =sha256,verify) are unaffected.
Before installing bits with this fix, you will need to destroy any
filesystems that have had dedup=fletcher4,verify set on them. You can
preserve your existing data by running:
zfs set dedup=<any other setting> <old fs>
zfs snapshot -r <old fs>@snap
zfs create <new fs>
zfs send -R <old fs>@snap | zfs recv -d <new fs>
zfs destroy -r <old fs>
Simply changing the setting from dedup=fletcher4,verify to another
setting is not sufficient, as this does not modify existing data.
You can verify that your pool isn't using dedup=fletcher4,verify by running
zdb -D <pool> | grep DDT-fletcher4
If there are no matches, your pool is not using dedup=fletcher4,verify,
and it is safe to install bits with this fix.
Build 128 will be respun to include this fix.
Sorry for the inconvenience,
-- team zfs
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