* [Cluster-devel] [RFC 2/3] GFS2 rename race - lock reordering
@ 2006-12-12 8:13 Wendy Cheng
2006-12-12 8:15 ` [Cluster-devel] " Wendy Cheng
0 siblings, 1 reply; 2+ messages in thread
From: Wendy Cheng @ 2006-12-12 8:13 UTC (permalink / raw)
To: cluster-devel.redhat.com
Currently GFS2 only obtains its rename global locks if the "source" is a
directory. This could result a deadlock if:
- Node 1 does "rename dir1/file-a dir2/file-b"
- Node 2 does "rename dir2/file-c dir1/file-a"
We'll unconditionally grab the global lock from now on unless the
"source" and "destination" are from the same directory.
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* [Cluster-devel] Re: [RFC 2/3] GFS2 rename race - lock reordering
2006-12-12 8:13 [Cluster-devel] [RFC 2/3] GFS2 rename race - lock reordering Wendy Cheng
@ 2006-12-12 8:15 ` Wendy Cheng
0 siblings, 0 replies; 2+ messages in thread
From: Wendy Cheng @ 2006-12-12 8:15 UTC (permalink / raw)
To: cluster-devel.redhat.com
Wendy Cheng wrote:
> Currently GFS2 only obtains its rename global locks if the "source" is
> a directory. This could result a deadlock if:
>
> - Node 1 does "rename dir1/file-a dir2/file-b"
> - Node 2 does "rename dir2/file-c dir1/file-a"
>
Sorry, typo .. 2nd line should be:
Node 2 does "rename dir2/file-c dir1/file-d"
-- Wendy
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