lkml.org 
[lkml]   [2005]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectNFS: msync required for data writes to server?
From
Date
Hi Trond,

On our 2.6.9 based systems, data written using mmap(MAP_SHARED) on a NFS
client is *never* being pushed out to the server if an explicit msync call
is not issued before the munmap.

On 11/12/04, there was a message thread concerning NFS corruption when
using mmap/munmap:

http://marc.theaimsgroup.com/?l=linux-nfs&m=110028817508318&w=2

In this thread you stated:

mmap() offers absolutely NO guarantees that the file will be synced to
disk on close. Use msync(MS_SYNC) if you want such a guarantee.

Are you saying that the data will *never* be written to the server? Could
you please clarify your position on this further?

Thanks!
Linda


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-05-12 21:24    [W:0.052 / U:2.904 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site