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Re: AW: SQLite locking for WCNG on NFS

From: Philip Martin <philip.martin_at_wandisco.com>
Date: Wed, 22 Feb 2012 14:06:12 +0000

Mark Phippard <markphip_at_gmail.com> writes:

> On Wed, Feb 22, 2012 at 8:42 AM, Philip Martin
> <philip.martin_at_wandisco.com> wrote:
>>
>> That's not correct.  Start and hold an update:
>>
>> $ gdb -arg subversion/svn/.libs/lt-svn up wc/A/B/C
>> (gdb) b update_editor.c:close_directory
>> (gdb) r
>> Breakpoint 2 at 0x7ffff78eee2f
>>
>> Run status:
>>
>> $ svn st wc
>>  L     wc/A/B
>> ! L     wc/A/B/C
>> ! L     wc/A/B/C/D
>
> When I do this on my OSX system, I see the the L status for every
> folder in my WC. That might technically mean the command is working,
> but it is not what I want to see.

Note I updated A/B/C and the parent A/B is locked; this allows for A/B/C
to be deleted. This prevents updating another subtree in A/B such as
A/B/X but does not prevent the update of a parallel parent such as
X/Y/Z. This behaviour is unchanged from 1.6.

>
> I will note that svn log worked fine for me. So I wonder why it did
> not for this user:
>
> http://mail-archives.apache.org/mod_mbox/subversion-users/201202.mbox/%3C135b01cceead%24cd1d1590%24675740b0%24%40webkr.de%3E
>
> Could it work differently on Windows?

Difficult to say since we don't have any details. It could be blocking
and timing out, or it could be seeing a workqueue item. Both of those
are new reductions in concurrency in 1.7

>> Update a different subtree:
>>
>> $ svn up wc/X/Y/Z
>> Updating 'wc/X/Y/Z':
>> A    wc/X/Y/Z/Q
>> Updated to revision 4.
>
> This does not work for me. I have an entire repository checked out
> and started an update in my /branches folder and my /trunk folder.
> The latter fails:

Yes /branches and /trunk will both attempt to lock / to allow for the
target to be deleted. You should be able to update /branches/foo and
/trunk/subversion.

-- 
uberSVN: Apache Subversion Made Easy
http://www.uberSVN.com
Received on 2012-02-22 15:06:51 CET

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