Re: [zfs-discuss] ZFS COW and simultaneous read & write of files

2010-09-22 Thread Nicolas Williams
On Wed, Sep 22, 2010 at 12:30:58PM -0600, Neil Perrin wrote: > On 09/22/10 11:22, Moazam Raja wrote: > >Hi all, I have a ZFS question related to COW and scope. > > > >If user A is reading a file while user B is writing to the same file, > >when do the changes introduced by user B become visible to

Re: [zfs-discuss] ZFS COW and simultaneous read & write of files

2010-09-22 Thread Neil Perrin
On 09/22/10 11:22, Moazam Raja wrote: Hi all, I have a ZFS question related to COW and scope. If user A is reading a file while user B is writing to the same file, when do the changes introduced by user B become visible to everyone? Is there a block level scope, or file level, or something else?

[zfs-discuss] ZFS COW and simultaneous read & write of files

2010-09-22 Thread Moazam Raja
Hi all, I have a ZFS question related to COW and scope. If user A is reading a file while user B is writing to the same file, when do the changes introduced by user B become visible to everyone? Is there a block level scope, or file level, or something else? Thanks! __