Re: [ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-05 Thread Yan, Zheng
On Wed, May 4, 2016 at 10:06 PM, Gregory Farnum wrote: > On Wed, May 4, 2016 at 2:16 AM, Yan, Zheng wrote: >> On Wed, May 4, 2016 at 4:51 PM, Burkhard Linke >> wrote: >>> Hi, >>> >>> >>> How does CephFS

Re: [ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-04 Thread Gregory Farnum
On Wed, May 4, 2016 at 2:16 AM, Yan, Zheng wrote: > On Wed, May 4, 2016 at 4:51 PM, Burkhard Linke > wrote: >> Hi, >> >> >> How does CephFS handle locking in case of missing explicit locking control >> (e.g. flock / fcntl)? And

Re: [ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-04 Thread Yan, Zheng
On Wed, May 4, 2016 at 4:51 PM, Burkhard Linke wrote: > Hi, > > > How does CephFS handle locking in case of missing explicit locking control > (e.g. flock / fcntl)? And what's the default of mmap'ed memory access in > that case? > Nothing special.

Re: [ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-04 Thread Burkhard Linke
Hi, On 05/04/2016 09:15 AM, Yan, Zheng wrote: On Wed, May 4, 2016 at 3:39 AM, Burkhard Linke wrote: Hi, On 03.05.2016 18:39, Gregory Farnum wrote: On Tue, May 3, 2016 at 9:30 AM, Burkhard Linke

Re: [ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-04 Thread Yan, Zheng
On Wed, May 4, 2016 at 3:39 AM, Burkhard Linke wrote: > Hi, > > On 03.05.2016 18:39, Gregory Farnum wrote: >> >> On Tue, May 3, 2016 at 9:30 AM, Burkhard Linke >> wrote: >>> >>> Hi, >>> >>> we have

Re: [ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-03 Thread Burkhard Linke
Hi, On 03.05.2016 18:39, Gregory Farnum wrote: On Tue, May 3, 2016 at 9:30 AM, Burkhard Linke wrote: Hi, we have a number of legacy applications that do not cope well with the POSIX locking semantics in CephFS due to missing locking support

Re: [ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-03 Thread Gregory Farnum
On Tue, May 3, 2016 at 9:30 AM, Burkhard Linke wrote: > Hi, > > we have a number of legacy applications that do not cope well with the POSIX > locking semantics in CephFS due to missing locking support (e.g. flock > syscalls). We are able to fix

[ceph-users] Disabling POSIX locking semantics for CephFS

2016-05-03 Thread Burkhard Linke
Hi, we have a number of legacy applications that do not cope well with the POSIX locking semantics in CephFS due to missing locking support (e.g. flock syscalls). We are able to fix some of these applications, but others are binary only. Is it possible to disable POSIX locking completely in