Subject: Re: bug#12523: Solaris 10 "cp -p" returns unknown error on NFSv4 share, permissions preserve not work

From: Eric Blake <[email-masked]>
Date: Mon, 08 Oct 2012 10:13:31 -0600

On 10/08/2012 05:45 AM, Ryba, Lukas wrote:
> Vendor currently investigated that problem happens with the combination of ZFS filesystem on NFSv3 only server and NFSv3 client. 
> 
> 1. facl with combination of ZFS filesystem(NFSv4 acls) exported by NFSv4 server is ok
> 2. facl with combination of UFS filesystem(POSIX acls) exported by NFSv3 server is ok
> 3. facl with combination of ZFS filesystem(NFSv4 acls) exported by NFSv3 server fails on client with errno -1 which is our case
> IMHO errno value in case 3 should be something useful. Like ENOTSUP. 

I wonder if gnulib should write rpl_facl() that checks for the case of
facl() failing with errno set to -1 and explicitly reset errno to
ENOTSUP in that case, to work around this vendor bug.

> 
> -----Original Message-----
> From: Paul Eggert [mailto:[email-masked]] 
> Sent: Thursday, October 04, 2012 5:53 PM
> To: Ryba, Lukas
> Cc: [email-masked]
> Subject: Re: bug#12523: Solaris 10 "cp -p" returns unknown error on NFSv4 share, permissions preserve not work
> 
> On 10/04/2012 02:19 AM, Ryba, Lukas wrote:
>> Workaround is simple. Just not use facl call right now. acl works ok.
> 
> That might work around the problem on your Solaris implementation,
> but it introduces other issues, on other platforms, so I'd like
> to get at the bottom of why such a change is really needed.
> 

-- 
Eric Blake   [email-masked]    +1-919-301-3266
Libvirt virtualization library http://libvirt.org