Re: [zfs-discuss] Raid-Z with N^2+1 disks

2008-07-20 Thread Richard Elling
Rob Clark wrote: >> On July 14, 2008 7:49:58 PM -0500 Bob Friesenhahn >> <[EMAIL PROTECTED]> wrote: >> >>> With ZFS and modern CPUs, the parity calculation is >>> >> surely in the noise to the point of being unmeasurable. >> >> I would agree with that. The parity calculation has *neve

Re: [zfs-discuss] Formatting Problem of ZFS Adm Guide (pdf)

2008-07-20 Thread Richard Elling
Akhilesh Mritunjai wrote: > Evince likes to fuzz a number of PDFs. I too can't seem to nail the problems, > but it seems that a number of PDFs from SUN have this problem (very wrong > character spacing), and they all have been generated using FrameMaker. PDFs > generated using TeX/LaTeX are *usu

Re: [zfs-discuss] Formatting Problem of ZFS Adm Guide (pdf)

2008-07-20 Thread Akhilesh Mritunjai
Evince likes to fuzz a number of PDFs. I too can't seem to nail the problems, but it seems that a number of PDFs from SUN have this problem (very wrong character spacing), and they all have been generated using FrameMaker. PDFs generated using TeX/LaTeX are *usually* ok. This message posted

Re: [zfs-discuss] [RFC] Improved versioned pointer algorithms

2008-07-20 Thread Akhilesh Mritunjai
> On Monday 14 July 2008 08:29, Akhilesh Mritunjai > wrote: > > Writable snapshots are called "clones" in zfs. So > infact, you have > > trees of snapshots and clones. Snapshots are > read-only, and you can > > create any number of "writable" clones from a > snapshot, that behave > > like a normal

Re: [zfs-discuss] copying a ZFS

2008-07-20 Thread James C. McPherson
Jim Mauro wrote: > So I'm really exposing my ignorance here, but... > > You wrote "/... if you wish to keep your snapshots.../"... > I never mentioned snapshots, thus you > introduced the use of a ZFS snapshot as a method of doing what > I wish to do. And yes, snapshots and send are in the manual,

Re: [zfs-discuss] Formatting Problem of ZFS Adm Guide (pdf)

2008-07-20 Thread W. Wayne Liauh
> ZFS Administration Guide (in PDF format) does not > look very professional (at least on > Evince/OS2008.05). Please see attached screenshot. Looks like this is a display problem. It seems that certain fonts (monospace fonts) were not displayed by the version of Evince included in OS 2008.05.

Re: [zfs-discuss] checksum errors on root pool after upgrade to snv_94

2008-07-20 Thread dick hoogendijk
On Sun, 20 Jul 2008 11:26:16 -0700 Bill Sommerfeld <[EMAIL PROTECTED]> wrote: > once is accident. twice is coincidence. three times is enemy > action :-) I have no access to b94 yet, but as it is, it probably is better to skip this one when it comes out then. -- Dick Hoogendijk -- PGP/GnuPG k

Re: [zfs-discuss] checksum errors on root pool after upgrade to snv_94

2008-07-20 Thread Bill Sommerfeld
On Fri, 2008-07-18 at 10:28 -0700, Jürgen Keil wrote: > > I ran a scrub on a root pool after upgrading to snv_94, and got checksum > > errors: > > Hmm, after reading this, I started a zpool scrub on my mirrored pool, > on a system that is running post snv_94 bits: It also found checksum errors

Re: [zfs-discuss] copying a ZFS

2008-07-20 Thread Jim Mauro
So I'm really exposing my ignorance here, but... You wrote "/... if you wish to keep your snapshots.../"... I never mentioned snapshots, thus you introduced the use of a ZFS snapshot as a method of doing what I wish to do. And yes, snapshots and send are in the manual, and I read about them. I in

Re: [zfs-discuss] copying a ZFS

2008-07-20 Thread Bob Friesenhahn
On Sun, 20 Jul 2008, Mattias Pantzare wrote: >> >> Is there a ZFS-specific method for doing that beats the heck of out tar, etc? >> (RTFM indicates there is not; I R'd the FM :^). > > Use zfs send | zfs receive if you wish to keep your snapshots or if > you will be doing the copy several times. You

Re: [zfs-discuss] ? SX:CE snv_91 - ZFS - raid and mirror - drive

2008-07-20 Thread Richard Elling
Rob Clark wrote: >> -Peter Tribble wrote: >> > > >>> On Sun, Jul 6, 2008 at 8:48 AM, Rob Clark wrote: >>> I have eight 10GB drives. >>> ... >>> I have 6 remaining 10 GB drives and I desire to >>> "raid" 3 of them and "mirror" them to the other 3 to >>> give me raid security and integrity wi

Re: [zfs-discuss] install opensolaris on raidz

2008-07-20 Thread Bob Friesenhahn
On Sun, 20 Jul 2008, Miles Nordin wrote: >> "r" == Ross <[EMAIL PROTECTED]> writes: > > r> the benefit of mirroring that CF drive would be minimal. > > rather short-sighted. What if you want to replace the CF with a > bigger or faster one without shutting down? Assuming that you are usi

Re: [zfs-discuss] copying a ZFS

2008-07-20 Thread Mattias Pantzare
2008/7/20 James Mauro <[EMAIL PROTECTED]>: > Is there an optimal method of making a complete copy of a ZFS, aside from the > conventional methods (tar, cpio)? > > We have an existing ZFS that was not created with the optimal recordsize. > We wish to create a new ZFS with the optimal recordsize (8k

[zfs-discuss] copying a ZFS

2008-07-20 Thread James Mauro
Is there an optimal method of making a complete copy of a ZFS, aside from the conventional methods (tar, cpio)? We have an existing ZFS that was not created with the optimal recordsize. We wish to create a new ZFS with the optimal recordsize (8k), and copy all the data from the existing ZFS to th

Re: [zfs-discuss] How to delete hundreds of emtpy snapshots

2008-07-20 Thread Chris Gerhard
Also http://blogs.sun.com/chrisg/entry/a_faster_zfs_snapshot_massacre which I run every night. Lots of snapshots are not a bad thing it is keeping them for a long time that takes space. I'm still snapping every 10 minutes and it is great. The thing I discovered was that I really wanted to be

Re: [zfs-discuss] ? SX:CE snv_91 - ZFS - raid and mirror - drive

2008-07-20 Thread Rob Clark
> -Peter Tribble wrote: >> On Sun, Jul 6, 2008 at 8:48 AM, Rob Clark wrote: >> I have eight 10GB drives. >> ... >> I have 6 remaining 10 GB drives and I desire to >> "raid" 3 of them and "mirror" them to the other 3 to >> give me raid security and integrity with mirrored >> drive performance. I th

Re: [zfs-discuss] install opensolaris on raidz

2008-07-20 Thread Miles Nordin
> "r" == Ross <[EMAIL PROTECTED]> writes: r> the benefit of mirroring that CF drive would be minimal. rather short-sighted. What if you want to replace the CF with a bigger or faster one without shutting down? pgpSx47yLusSx.pgp Description: PGP signature

Re: [zfs-discuss] checksum errors on root pool after upgrade to snv_94

2008-07-20 Thread Miles Nordin
> "jk" == Jürgen Keil <[EMAIL PROTECTED]> writes: jk> And a zpool scrub under snv_85 doesn't find checksum errors, jk> either. how about a second scrub with snv_94? are the checksum errors gone the second time around? I get checksum errors counted all the time when it is really just

Re: [zfs-discuss] How to delete hundreds of emtpy snapshots

2008-07-20 Thread Rob Clark
> I got overzealous with snapshot creation. Every 5 mins is a bad idea. Way too > many. > What's the easiest way to delete the empty ones? > zfs list takes FOREVER You might enjoy reading: ZFS snapshot massacre http://blogs.sun.com/chrisg/entry/zfs_snapshot_massacre. (Yes, the "." is part of th

Re: [zfs-discuss] Adding my own compression to zfs

2008-07-20 Thread Rob Clark
> Robert Milkowski wrote: > During christmass I managed to add my own compression to zfs - it as quite > easy. Great to see innovation but unless your personal compression method is somehow better (very fast with excellent compression) then would it not be a better idea to use an existing (lea

Re: [zfs-discuss] Adding my own compression to zfs

2008-07-20 Thread Rob Clark
> Robert Milkowski wrote: > During christmass I managed to add my own compression to zfs - it as quite > easy. Great to see innovation but unless your personal compression method is somehow better (very fast with excellent compression) then would it not be a better idea to use an existing (lea

Re: [zfs-discuss] [RFC] Improved versioned pointer algorithms

2008-07-20 Thread Daniel Phillips
On Monday 14 July 2008 08:29, Akhilesh Mritunjai wrote: > Writable snapshots are called "clones" in zfs. So infact, you have > trees of snapshots and clones. Snapshots are read-only, and you can > create any number of "writable" clones from a snapshot, that behave > like a normal filesystem and you