Re: DMAPI bug in dm_file_getattr()

["James A Goodwin" <jagoodwi@xxxxxxxxxx>]

Dean,

Yeah this is a big problem.  Users won't appreciate it when the filesystem
hangs every time they append to a file.

When you have a fix ready, what software levels (kernel and XFS) will I
need to be running on to use it?  Also, do you have a time frame for this?
Our testing cycle is coming to a close very soon, so we'll take it as soon
as you can dish it out.

Thanks,

-James Goodwin
Software Engineer
IBM Global Services - Federal
jagoodwi@xxxxxxxxxx
Phone: (281) 336 2578
Fax: (281) 335 4231
T/L 260-2578


                                                                                
                                                       
                      Dean Roehrich                                             
                                                       
                      <roehrich@xxxxxxx        To:       James A 
Goodwin/Houston/IBM@IBMUS                                             
                      >                        cc:       linux-xfs@xxxxxxxxxxx  
                                                       
                      Sent by:                 Subject:  Re: DMAPI bug in 
dm_file_getattr()                                            
                      owner-linux-xfs@o                                         
                                                       
                      ss.sgi.com                                                
                                                       
                                                                                
                                                       
                                                                                
                                                       
                      04/17/2002 11:15                                          
                                                       
                      AM                                                        
                                                       
                                                                                
                                                       
                                                                                
                                                       




>From:  "James A Goodwin" <jagoodwi@xxxxxxxxxx>
>I'm running XFS 1.0.2 on kernel 2.4.14 and am having the following DMAPI
>problem:
>
>dm_get_fileattr() hangs when an append is in progress.
>
>I have a file with a DMAPI region covering whole file (offset & length
both
>set to 0).
>The region has read, write, and truncate events enabled.
>When an append is done and the write event is received, a subsequent call
>to dm_get_fileattr() hangs.
>
>Is this something that has been fixed in a later patch, or is it new?


Not fixed.  Sounds like a repeat of something Francis reported a few weeks
ago (appended), which is sitting on my list of things to do.

I guess this is a bigger problem than I had thought. :)


Dean


>>Subject: DMAPI dm_set_region
>>From:    "Francis Qu" <francis@xxxxxxxxxxxx>
>>Date:    Wed, 20 Mar 2002 18:01:05 EST
>>To:      <linux-xfs@xxxxxxxxxxx>
>>
>>When DMAPI application tries to do dm_set_region on a file which is
opened for
>>write, both DMAPI application and the user application doing the write
operatio
>>n are blocked. The DMAPI application won't come back from dm_set_region
utill t
>>he user cancels the write job. Is it the way DMAPI works?
>>
>>Thanks.
>>
>>Francis