Perfect, thanks - that puts my mind at ease :-) A relevant question, for backups of the file server: Besides "zfs send | ssh ... ", are there any other backup mechanisms that store these "special" smb-generated ACLs? Preferably, some that offer individual file retrieval possibility (like tar - which again according to Google, doesn't save them for ZFS)?
Thanassis. On Mon, Nov 23, 2009 at 11:10 AM, Jordan Brown <[email protected]> wrote: > Thanassis Tsiodras wrote: > >> If I use the share from a Windows PC, where a domain user has logged in, >> the generated folders/files indeed seem to belong to the same user (when >> reviewed from another machine). The ACLs appear to survive reboots... >> >> Do they? i.e. is this guaranteed? >> > > Yes, it is guaranteed. > > > The idmap documentation I read seems to suggest that even though idmap >> attempts to retain the same ephemeral UID for the same Windows SID, this is >> not guaranteed... the UID might change after a reboot of OpenSolaris. >> > > It actually makes no attempt whatsoever to retain the same ephemeral UID > across reboots. The ephemeral UID is unimportant... ephemeral. It is > never, ever written to disk. What's stored on the disk is the Windows-style > SID for the user, not a UNIX-style UID. The ephemeral ID is used only > momentarily, as the user's identity is passed up and down through layers > that know only how to handle UIDs. > > I'm sure there's a white paper or blog entry somewhere describing the whole > architecture, but I don't immediately know where. If you're interested I'll > see if I can dig it up. > -- What I gave, I have; what I spent, I had; what I kept, I lost. -Old Epitaph
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