Nicolas Dorfsman wrote:
I am using Netbackup 6.0 MP3 on several ZFS systems
just fine. I
think that NBU won't back up some exotic ACLs of ZFS,
but if you
are using ZFS like other filesystems (UFS, etc) then there aren't any issues.
Hum. ACLs are not so "exotic".
This IS a really BIG issue. If you are using ACLs, even POSIX, moving
production to ZFS filesystems means loosing any ACLs in backups.
There is no such thing as POSIX ACLs. The draft never made it to
standard. Veritas NetBackup and Legato Networker both use the Solaris
acl(2) system call to get POSIX draft ACLs from UFS. ZFS and NFSv4 use
a more modern and much more expressive form of ACLs. The acl(2) system
call was extended in a compatible way for them, but some backup programs
assume that acl(2) returning ENOSYS is fatal - in some ways it could be.
What it actually means in some cases is that the type of argument
you passed to acl(2) isn't supported by this file system.
Both are being fixed, as are other programs such as star.
If I'd have to give a list of complaint on ZFS, that would be the first on
my list ! Sun SHOULD make pressure on backup software editor (or send them
some engineer) to support ZFS.
Sun does not control the release schedule of 3rd party software. Sun
gave them plenty of heads up, IIRC they knew about this issue even
before the first Solaris Express binaries shipped with ZFS or the source
hit OpenSolaris.org. Fixes are in progress but 3rd parties will
release their patches and their new releases when they are ready. If
you are a customer of either of those products it often helps if you put
pressure on them.
--
Darren J Moffat
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