Yes, you can use multiple ioctxs with the same underlying rados connection.
There's no hard limit on how many, it depends on your usage if/when a single
rados connection becomes a bottleneck.
It's safe to use different ioctxs from multiple threads. IoCtxs have some local
state like namespace, object locator key and snapshot that limit what you can
do safely with multiple threads using the same IoCtx. librados.h has more
details, but it's simplest to use a separate ioctx for each thread.
Josh
From: Michel Hollands <mholla...@velocix.com>
Sent: Apr 8, 2015 6:54 AM
To: ceph-us...@ceph.com
Subject: [ceph-users] Number of ioctx per rados connection
> Hello,
>
> This is a question about the C API for librados. Can you use multiple “IO
> contexts” (ioctx) per rados connection and if so how many ? Can these then be
> used by multiple threads ?
>
> Thanks in advance,
>
> Michel
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