I've noticed strange effects between ZFS compression and GNU tar 1.17.
Take a look at this forum post:
http://forums.zmanda.com/showthread.php?t=3792
___
zfs-discuss mailing list
zfs-discuss@opensolaris.org
We are using ZFS on a Sun E450 server (4 x 400 MHz CPU, 1 Gb memory, 18 Gb
system disk and 19 x 300 Gb disks running OSOL snv 134) for archive
storage where speed is not important. We have 2 RAID-Z1 pools of 8 disks
plus one spare disk shared between the two pools and this has apparently
On Sat, 13 Aug 2011, andy thomas wrote:
However, one of our users recently put a 35 Gb tar.gz file on this server and
uncompressed it to a 215 Gb tar file. But when he tried to untar it, after
about 43 Gb had been extracted we noticed the disk usage reported by df for
that ZFS pool wasn't
On Sat, 13 Aug 2011, Bob Friesenhahn wrote:
On Sat, 13 Aug 2011, andy thomas wrote:
However, one of our users recently put a 35 Gb tar.gz file on this server
and uncompressed it to a 215 Gb tar file. But when he tried to untar it,
after about 43 Gb had been extracted we noticed the disk usage
andy thomas a...@time-domain.co.uk wrote:
What 'tar' program were you using? Make sure to also try using the
Solaris-provided tar rather than something like GNU tar.
I was using GNU tar actually as the original archive was created on a
Linux machine. I will try it again using Solaris
On Sat, 13 Aug 2011, Joerg Schilling wrote:
andy thomas a...@time-domain.co.uk wrote:
What 'tar' program were you using? Make sure to also try using the
Solaris-provided tar rather than something like GNU tar.
I was using GNU tar actually as the original archive was created on a
Linux
andy thomas a...@time-domain.co.uk wrote:
So it is GNU tar that is broken and not Solaris tar? I always thought it
was the other way round. Thanks for letting me know.
Before autoumn 2004, Sun tar had several problems with standard compliance but
then it has been tested against tartest(1)
andy thomas a...@time-domain.co.uk wrote:
I've tended to use GNU tar on Solaris as apparently there was a bug in the
Solaris version of tar from very log ago where it would not extract files
properly from tarfiles created on non-Solaris systems. Maybe this
long-standing bug has been fixed
GNU tar does not follow the standard when creating archives, so Sun
tar may be unable to unpack the archive correctly.
But GNU tar makes strange things when unpacking symlinks.
I recommend to use star, it understands GNU tar archives.
Even if you used some wierd tar program, the I/O
