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From Elliott Sims <elli...@backblaze.com>
Subject Re: snapshots and 'dot' prefixed _index directories
Date Wed, 02 Oct 2019 01:08:28 GMT
The tar error is because tar also looks for metadata changes.  In this
case, it's the refcount that's changing and causing the error.  I just
switched to using bsdtar instead as a workaround.

On Tue, Oct 1, 2019, 5:37 PM James A. Robinson <jim.robinson@gmail.com>
wrote:

> Hi folks,
>
>
> I took a nodetool snapshot of a keyspace in my cassandra 3.11 cluster
> and it included directories with a 'dot' prefix (often called a hidden
> file/directory).  As an example:
>
>
> /var/lib/cassandra/data/impactvizor/tableau_notification-04bfb600291e11e7aeab31f0f0e5804b/snapshots/1569974640/.tableau_notification_alert_id_index
>
> Am I supposed to back up the files under the dot-prefixed directories
> the same as I do the other files?
>
> I ask because tar just complained that one of these files 'changed as
> we read it' which I wouldn't have expected given the documentation of
> how snapshots worked....
>
> Jim
>
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