Date: Sat, 11 Aug 2007 11:27:20 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: freebsd-questions@freebsd.org Subject: Re: ZFS - no thanks! Message-ID: <20070811152719.GA25036@rot26.obsecurity.org> In-Reply-To: <20070811131633.X1392@wojtek.tensor.gdynia.pl> References: <20070811131633.X1392@wojtek.tensor.gdynia.pl>
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[-- Attachment #1 --] On Sat, Aug 11, 2007 at 01:25:44PM +0200, Wojciech Puchar wrote: > just ended testing. Wow, that was quick. It looks like you made some very hasty judgements, and a lot of the problems you encountered were quite frankly your own fault. > after having all my data (test system fortunately) on ZFS including root, > i lost /boot partition, which was on pendrive to make testing easier. > > well - no problem - i've started my normal 6.2 syste, got bootonly CD, > removed mfsroot, added (as on ZFS system) > vfs.root.mountfrom="zfs:tank/root", put tu pendrive, bsdlabel -B etc.. > > started.. > > it CANNOT mount zfs. Yes, clearly documented. > well - i don't have live CD Easy to download one. > the only thing left was 7.0 livecd but amd64 only. > > well - i have qemu. > > started qemu with this image, added -hda with my ZFS disk, started. > > got to fixid, kldload zfs.ko > > zfs import - well all's fine > > zfs import -f tank > > after some time done > > tried any command - looks like no libraries. well - probably it > overmounted / from zfs... I doubt it. More likely you are having problems from trying to use your i386 system on an amd64 kernel, which will be looking in a different place for the i386 libraries. > next reboot > > now > > zfs import -R /mnt -f tank > > > and it's waiting forever. doing nothing, both CTRL-C and CTRL-Z doesn't > work. > > it's doing nothing as i see that qemu uses almost no CPU. You may have found a bug, unfortunately you needed to obtain more debugging information to be a useful report. > it uses HUGE amount of RAM. Documented. > it's set copies=n is a joke. > you have no warranty where are the copies (often on the same disk). Not according to the documentation. > zpool scrub DOES NOT move copies to other disk from the same when other is > made available!! It should, I think. > raidz can't be expanded Dunno what you mean by expanded. > cache flushing CAN NOT be disable for selected device, only for > everything. > > my USB-IDE converter make doesn't allow it, but my 2.5" does! > i use USB-IDE converted with disk as a backup. with ZFS it's impossible > unless i will turn off flushing for everything - losing it's important > adventage. Not sure what you mean here either. > disks based pool (no mirror/raidz) won't start AT ALL with one element > unattached!!! EVEN if everything has copies>1 !!! That's not what copies is supposed to be used for. If you want degraded mode, use a mirror/raid configuration,. > summary: excellent idea turned into pile of s...t summary: user had many incorrect expectations about the software and is not willing to correctly report possible bugs so they can be fixed, therefore should avoid running all pre-release versions of freebsd. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFGvdVXWry0BWjoQKURAjWGAKDOWjF0duNXXzxwrA0ztdDhxswhJQCgwL6x 8mSg4A2/CM532azmgxhpQAM= =xNkM -----END PGP SIGNATURE-----
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