On Wed, Oct 16, 2013 at 6:12 PM, Sage Weil wrote:
>> 3. During deep scrub of an object with 2 replicas, suppose the checksum is
>> different for the two objects -- which object wins? (I.e. if you store the
>> checksum locally, this is trivial since the consistency of objects can be
>> evaluated
On Wed, 16 Oct 2013, ja...@peacon.co.uk wrote:
> Does Ceph log anywhere corrected(/caught) silent corruption - would be
> interesting to know how much a problem this is, in a large scale deployment.
> Something to gather in the league table mentioned at the London Ceph day?
It is logged, and cause
-users-boun...@lists.ceph.com
> [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of ja...@peacon.co.uk
> Sent: 16 October 2013 20:06
> To: ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] bit correctness and checksumming
>
> Very interesting link. I don't suppos
Thank you Sage for the thorough answer.
It just occurred to me to also ask about the gateway. The docs explain that one
can supply content-md5 during an object PUT (which I assume is verified by the
RGW), but does a GET respond with the ETag md5? (Sorry, I don't have a gateway
running at the mo
Sent: 16 October 2013 18:54
To: ceph-users@lists.ceph.com
Subject: Re: [ceph-users] bit correctness and checksumming
Does Ceph log anywhere corrected(/caught) silent corruption - would
be interesting to know how much a problem this is, in a large scale
deployment. Something to gather in the le
Tim
> -Original Message-
> From: ceph-users-boun...@lists.ceph.com
> [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of ja...@peacon.co.uk
> Sent: 16 October 2013 18:54
> To: ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] bit correctness and checksumming
>
&
Does Ceph log anywhere corrected(/caught) silent corruption - would be
interesting to know how much a problem this is, in a large scale
deployment. Something to gather in the league table mentioned at the
London Ceph day?
Just thinking out-loud (please shout me down...) - if the FS itself
On Wed, 16 Oct 2013, Dan Van Der Ster wrote:
> Hi all,
> There has been some confusion the past couple days at the CHEP
> conference during conversations about Ceph and protection from bit flips
> or other subtle data corruption. Can someone please summarise the
> current state of data integrity
Hi all,
There has been some confusion the past couple days at the CHEP conference
during conversations about Ceph and protection from bit flips or other subtle
data corruption. Can someone please summarise the current state of data
integrity protection in Ceph, assuming we have an XFS backend fi
