Neil Perrin wrote:
Under the hood in ZFS, writes are committed using either shadow
paging or
logging, as I understand it. So I believe that I mean to ask whether a
write(2), pushed to ZPL, and pushed on down the stack, can be split
into
multiple transactions? Or, instead, is it guaranteed
Will a write(2) to a ZFS file be made durable atomically?
Under the hood in ZFS, writes are committed using either shadow paging or
logging, as I understand it. So I believe that I mean to ask whether a
write(2), pushed to ZPL, and pushed on down the stack, can be split into
multiple
Under the hood in ZFS, writes are committed using either shadow paging or
logging, as I understand it. So I believe that I mean to ask whether a
write(2), pushed to ZPL, and pushed on down the stack, can be split into
multiple transactions? Or, instead, is it guaranteed to be committed in a
On Mon, Nov 30, 2009 at 11:03:07PM -0700, Neil Perrin wrote:
A write made through the ZPL (zfs_write()) will be broken into transactions
that contain at most 128KB user data. So a large write could well be split
across transaction groups, and thus committed separately.
That answers my exact
On Mon, Nov 30, 2009 at 10:23:06PM -0800, Chris Frost wrote:
On Mon, Nov 30, 2009 at 11:03:07PM -0700, Neil Perrin wrote:
A write made through the ZPL (zfs_write()) will be broken into transactions
that contain at most 128KB user data. So a large write could well be split
across transaction
