Re: [zfs-discuss] Debunking the dedup memory myth

Brandon High wrote: On Fri, Jul 9, 2010 at 5:18 PM, Brandon High > wrote: I think that DDT entries are a little bigger than what you're using. The size seems to range between 150 and 250 bytes depending on how it's calculated, call it 200b each. Your 128G dat

Re: [zfs-discuss] Trou ble Moving opensolaris to new HD

On Sun, Jul 18, 2010 at 3:45 PM, splazo doberman wrote: > I just slapped a new hard drive into my machine and moved everything over > with acronis migrate easy. That's the problem. You should have attached the new drive (or partition I guess) to copy over the OpenSolaris system. > Unfortunately

Re: [zfs-discuss] carrying on

On Sun, Jul 18, 2010 at 10:19 PM, Miles Nordin wrote: > IMHO it's important we don't get stuck running Nexenta in the same > spot we're now stuck with OpenSolaris: with a bunch of CDDL-protected > source that few people know how to use in practice because the build > procedure is magical and secre

Re: [zfs-discuss] Trou ble Moving opensolaris to new HD

>Most likely, the problem is that both the old and new disks have a pool >named 'rpool'. You thus can't do anything like 'import rpool'. >I'm assuming that you can at least see the old disk's pools via a plain >'import', correct? Have you tried importing via UID rather than via >name - also, try

Re: [zfs-discuss] carrying on

> "re" == Richard Elling writes: re> we would very much like to see Oracle continue to produce re> developer distributions which more closely track the source re> changes. I'd rather someone else than Oracle did it. Until someone else is doing the ``building'', whatever that ent

Re: [zfs-discuss] Debunking the dedup memory myth

On Sun, 2010-07-18 at 16:18 -0700, Richard L. Hamilton wrote: > > I would imagine that if it's read-mostly, it's a win, but > otherwise it costs more than it saves. Even more conventional > compression tends to be more resource intensive than decompression... > > What I'm wondering is when dedu

Re: [zfs-discuss] Recommended RAM for ZFS on various platforms

On 2010-Jul-19 07:15:45 +0800, Richard Elling wrote: >On Jul 18, 2010, at 3:40 PM, Peter Jeremy wrote: >> 3.5GB. Note that in any case, patching ARC to work around the out- >> of-free-memory bug is fairly important. > >Do you have a CR for this bug? This is a FreeBSD-specific bug related to inte

Re: [zfs-discuss] Trou ble Moving opensolaris to new HD

On 7/18/2010 3:45 PM, splazo doberman wrote: I'm running opensolaris 0906 in a triple boot environment with linux and windows. I just slapped a new hard drive into my machine and moved everything over with acronis migrate easy. Unfortunately, this failed to set up grub correctly so I resorted

Re: [zfs-discuss] Debunking the dedup memory myth

On 7/18/2010 4:18 PM, Richard L. Hamilton wrote: Even the most expensive decompression algorithms generally run significantly faster than I/O to disk -- at least when real disks are involved. So, as long as you don't run out of CPU and have to wait for CPU to be available for decompression, the

Re: [zfs-discuss] Debunking the dedup memory myth

> Even the most expensive decompression algorithms > generally run > significantly faster than I/O to disk -- at least > when real disks are > involved. So, as long as you don't run out of CPU > and have to wait for > CPU to be available for decompression, the > decompression will win. The > same

Re: [zfs-discuss] Recommended RAM for ZFS on various platforms

On Jul 18, 2010, at 3:40 PM, Peter Jeremy wrote: > On 2010-Jul-17 01:24:57 +0800, Michael Johnson > wrote: >> I'm currently planning on running FreeBSD with ZFS, but I wanted to >> double-check >> how much memory I'd need for it to be stable. The ZFS wiki currently says >> you >> can go as

Re: [zfs-discuss] Recommended RAM for ZFS on various platforms

On 2010-Jul-17 01:24:57 +0800, Michael Johnson wrote: >I'm currently planning on running FreeBSD with ZFS, but I wanted to >double-check >how much memory I'd need for it to be stable. The ZFS wiki currently says you >can go as low as 1 GB, but recommends 2 GB; however, elsewhere I've seen >so

[zfs-discuss] Trou ble Moving opensolaris to new HD

I'm running opensolaris 0906 in a triple boot environment with linux and windows. I just slapped a new hard drive into my machine and moved everything over with acronis migrate easy. Unfortunately, this failed to set up grub correctly so I resorted to the brute force solution of just reinstal

[zfs-discuss] Move Fedora or Windows disk image to ZFS (iScsi Boot)

I've found plenty of documentation on how to create a ZFS volume, iscsi share it, and then do a fresh install of Fedora or Windows on the volume. What I can not find is how to take an existing Fedora image and copy the it's contents into a ZFS volume so that I can migrate this image from my exis

[zfs-discuss] carrying on [was: Legality and the future of zfs...]

On Jul 15, 2010, at 4:48 AM, BM wrote: > On Thu, Jul 15, 2010 at 10:53 AM, Garrett D'Amore wrote: >> The *code* is probably not going away (even updates to the kernel). >> Even if the community dies, is killed, or commits OGB induced suicide. > > 1. You used correct word: "probably". The sun wi

[zfs-discuss] Help identify failed drive

This is a situation: I've got an error on one of the drives in 'zpool status' output: zpool status tank pool: tank state: ONLINE status: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected. action: Determ

Re: [zfs-discuss] Lost zpool after reboot

Hi, The other pool rsgis has disappeared due to some zfs import/export I attempted. The data lost can be recreated except for some downloaded pdf's. I should have done a zpool history before fiddling with import/export. Can somebody tell me if there is a way to recall history of the pool rsgis?

Re: [zfs-discuss] zpool access hangs

Hello, I have a very strange isue with a root zpool. I have a test machine which is running OpenSolaris 2009.06 and has a mirrored root pool and, recently, one of the drives failed. I replaced the drive and resilvered the mirror successfully. Shortly afterwards, the machine crashed and

Re: [zfs-discuss] [?] - What is the recommended number of disks for a consumer PC with ZFS

- Original Message - > > I'm building my new storage server, all the parts should come in > > this week... > > How did it turn out ? Did 8x1TB Drives seem to be the correct number > or a couple too many (based on > the assumption that you did not run out of space; I mean solely from a > pe

Re: [zfs-discuss] [?] - What is the recommended number of disks for a consumer PC with ZFS

> I'm building my new storage server, all the parts should come in this week... How did it turn out ? Did 8x1TB Drives seem to be the correct number or a couple too many (based on the assumption that you did not run out of space; I mean solely from a performance / 'ZFS usability' standpoint -

[zfs-discuss] zpool access hangs

Hello, I have a very strange isue with a root zpool. I have a test machine which is running OpenSolaris 2009.06 and has a mirrored root pool and, recently, one of the drives failed. I replaced the drive and resilvered the mirror successfully. Shortly afterwards, the machine cra

Re: [zfs-discuss] raidz capacity osol vs freebsd

When viewing a raidz|raidz1|raidz2 pool, 'zpool list|status' will report the total "device" space; ie: 3 1TB drives in a raidz will show approx. 3TB space. 'zfs list' will show available FILESYSTEM space, ie: 3 1TB raidz disks, approx 2TB space. Logic wrote: > Ian Collins (i...@ianshome.com) wrot

[zfs-discuss] Lost zpool after reboot

Hello, I have a dual boot with Windows 7 64 bit enterprise edition and Opensolaris build 134. This is on Sun Ultra 40 M1 workstation. Three hard drives, 2 in ZFS mirror, 1 is shared with Windows. Last 2 days I was working in Windows. I didn't touch the hard drives in any way except I once open