non-windows behavior of samba
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From: John Drescher on 6 May 2010 11:50 On Wed, May 5, 2010 at 4:56 PM, Darwin, Samuel <darwins(a)thirteen.org> wrote: > We have a vendor who is going to install an application server, and it > requires samba to behave as much like windows as possible. There is a > particular case they are complaining about. > > > 1. Run samba on redhat server > 2. Map a drive from windows. Let's say the Z: drive > 3. Run a script to open and continuously modify a file on the samba > share > 4. Observe the samba share in Windows Explorer > > You will see that the file size does not get updated until you hit > "refresh". > In a pure windows, environment, the filesize will be modified every few > seconds. So, samba is apparently not alerting the windows client that > the filesize has changed. Is this a configurable setting? Can this be > fixed? > > Here is an example perl script to run on the client side: > > > > open FILE, ">", "Z:/test.txt"; > > > > while (1) { > > print FILE > "jkasdklfjaskldfjaskl;dfjakl;sdfgjaklfghjkadfghajklsasdfjklasjdflkasjdfk > lajsdfklajsdfl"; > > print FILE > "jkasdklfjaskldfjaskl;dfjakl;sdfgjaklfghjkadfghajklsasdfjklasjdflkasjdfk > lajsdfklajsdfl"; > > print FILE > "jkasdklfjaskldfjaskl;dfjakl;sdfgjaklfghjkadfghajklsasdfjklasjdflkasjdfk > lajsdfklajsdfl"; > > } > > > > print "sleeping\n"; > > sleep 1; > > } > > > I believe you need fam support compiled into samba and inotify support in your kernel. John -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Darwin, Samuel on 7 May 2010 13:00 I am using standard builds of CentOS 5.4 and Samba 3.5.2. Inotify is in the kernel by default Apparently the smb.conf setting "fam change notify = yes" represents the default value gam_server is running Is there something I have to "do", which is not done by default? -----Original Message----- From: John Drescher [mailto:drescherjm(a)gmail.com] Sent: Thursday, May 06, 2010 11:46 AM To: Darwin, Samuel Cc: samba(a)lists.samba.org Subject: Re: [Samba] non-windows behavior of samba On Wed, May 5, 2010 at 4:56 PM, Darwin, Samuel <darwins(a)thirteen.org> wrote: > We have a vendor who is going to install an application server, and it > requires samba to behave as much like windows as possible. There is a > particular case they are complaining about. > > > 1. Run samba on redhat server > 2. Map a drive from windows. Let's say the Z: drive > 3. Run a script to open and continuously modify a file on the samba > share > 4. Observe the samba share in Windows Explorer > > You will see that the file size does not get updated until you hit > "refresh". > In a pure windows, environment, the filesize will be modified every few > seconds. So, samba is apparently not alerting the windows client that > the filesize has changed. Is this a configurable setting? Can this be > fixed? > > Here is an example perl script to run on the client side: > > > > open FILE, ">", "Z:/test.txt"; > > > > while (1) { > > print FILE > "jkasdklfjaskldfjaskl;dfjakl;sdfgjaklfghjkadfghajklsasdfjklasjdflkasjdfk > lajsdfklajsdfl"; > > print FILE > "jkasdklfjaskldfjaskl;dfjakl;sdfgjaklfghjkadfghajklsasdfjklasjdflkasjdfk > lajsdfklajsdfl"; > > print FILE > "jkasdklfjaskldfjaskl;dfjakl;sdfgjaklfghjkadfghajklsasdfjklasjdflkasjdfk > lajsdfklajsdfl"; > > } > > > > print "sleeping\n"; > > sleep 1; > > } > > > I believe you need fam support compiled into samba and inotify support in your kernel. John -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Darwin, Samuel on 7 May 2010 14:50 By the way, I have isolated the problem to a subset of cases. To review the problem case again briefly: mount Z: drive from Windows. Actively modify a file. The Windows Explorer doesn't "update" things like file size or modification date. This is only broken when the modification happens across the samba share. If I log onto the Linux server that is running samba, and I modify a file there (in any number of ways), the "update" actually does work. It does show up on my Z: drive. So, for the problem to occur, one must make the changes to the file from Windows, across the samba share, as well as be observing the file from Windows Explorer. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Miguel Medalha on 7 May 2010 18:40 That should really work. I have several Samba servers with Windows XP clients and with all of them client-made changes are immediately reflected in Windows Explorer. > Apparently the smb.conf setting "fam change notify = yes" represents the default value > "fam change notify"? From version 3.0.025 on, that parameter was removed. The parameters I have here are the ones documented in the smb.conf man page: //|kernel change notify|/ = |yes| ///|change notify|/ = |yes| /"Yes" is the default for both of them. Nevertheless, I vaguely remember having met that problem once upon a time... Did you try to recreate the share? // -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Roel van Meer on 10 May 2010 02:40 Darwin, Samuel writes: > So, for the problem to occur, one must make the changes to the file from > Windows, across the samba share, as well as be observing the file from > Windows Explorer. We have encountered similar (bot not identical) problems and they were solved by setting csc policy = disable for the particular share. Perhaps you could give that a try? Regards, roel -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
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