[zfs-discuss] dedup and memory/l2arc requirements

2010-04-02 Thread Roy Sigurd Karlsbakk
into which I can plug my recordsize and volume size to get the appropriate numbers? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperati

Re: [zfs-discuss] [install-discuss] Installing Opensolaris without ZFS?

2010-04-02 Thread Roy Sigurd Karlsbakk
I doubt it. ZFS is meant to be used for large systems, in which memory is not an issue Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært

Re: [zfs-discuss] dedup and memory/l2arc requirements

2010-04-03 Thread Roy Sigurd Karlsbakk
. As zdb is an intentionally unsupported tool, methinks > recompile > may be required (or write your own). I guess this tool might not work too well, then, with 20TiB in 47M files? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ --

Re: [zfs-discuss] dedup and memory/l2arc requirements

2010-04-03 Thread Roy Sigurd Karlsbakk
can use for a general overview? Say I want 125TB space and I want to dedup that for backup use. It'll probably be quite efficient dedup, so long alignment will match. By the way, is there a way to auto-align data for dedup in case of backup? Or does zfs do this by itself? Best regards roy --

[zfs-discuss] Question about large pools

2010-04-03 Thread Roy Sigurd Karlsbakk
Hi all >From http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide I >read "Avoid creating a RAIDZ, RAIDZ-2, RAIDZ-3, or a mirrored configuration with one logical device of 40+ devices. See the sections below for examples of redundant configurations." What do they mean by th

Re: [zfs-discuss] To slice, or not to slice

2010-04-03 Thread Roy Sigurd Karlsbakk
- "Edward Ned Harvey" skrev: > > What build were you running? The should have been addressed by > > CR6844090 > > that went into build 117. > > I'm running solaris, but that's irrelevant. The storagetek array > controller > itself reports the new disk as infinitesimally smaller than the one

Re: [zfs-discuss] To slice, or not to slice

2010-04-03 Thread Roy Sigurd Karlsbakk
if you're going to > create Seems like a clumsy workaround for a hardware problem. It will also disable the drives' cache, which is not a good idea. Why not just get a new drive? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.

Re: [zfs-discuss] Are there (non-Sun/Oracle) vendors selling OpenSolaris/ZFS based NAS Hardware?

2010-04-05 Thread Roy Sigurd Karlsbakk
- "Kyle McDonald" skrev: > I've seen the Nexenta and EON webpages, but I'm not looking to build > my own. > > Is there anything out there I can just buy? I've setup a few systems with supermicro hardware - works well and doesn't cost a wh

[zfs-discuss] Secure delete?

2010-04-10 Thread Roy Sigurd Karlsbakk
Hi all Is it possible to securely delete a file from a zfs dataset/zpool once it's been snapshotted, meaning "delete (and perhaps overwrite) all copies of this file"? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I al

Re: [zfs-discuss] Secure delete?

2010-04-10 Thread Roy Sigurd Karlsbakk
I guess that's the way I thought it was. Perhaps it would be nice to add such a feature? If something gets stuck in a truckload of snapshots, say a 40GB file in the root fs, it'd be nice to just rm --killemall largefile Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@kar

Re: [zfs-discuss] getconf test for case insensitive ZFS?

2010-04-14 Thread Roy Sigurd Karlsbakk
r...@urd:~# zfs get casesensitivity dpool/test NAMEPROPERTY VALUESOURCE dpool/test casesensitivity sensitive- this seems to be settable only by create, not later. See man zfs for more info Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net

Re: [zfs-discuss] recomend sata controller 4 Home server with zfs raidz2 and 8x1tb hd

2010-04-18 Thread Roy Sigurd Karlsbakk
>From wikipedia, PCI is 133 MB /s (32-bit at 33 MHz) 266 MB/s (32-bit at 66 MHz or 64-bit at 33 MHz) 533 MB/s (64-bit at 66 MHz) Not quite the 3GB/s hoped for. But how fast do drives themselves tend to be? I rarely see above 80-100MB/s, although my drives are just consumer-level 7200RPM

Re: [zfs-discuss] recomend sata controller 4 Home server with zfs raidz2 and 8x1tb hd

2010-04-19 Thread Roy Sigurd Karlsbakk
- "Harry Putnam" skrev: > Erik Trimble writes: > > >> Do you think it would be a problem having a second sata card in a > PCI > >> slot? That would be 8 sata ports in all, since the A-open AK86 > >> motherboard has 2 built in. Or should I swap out the 2prt for the > 4 > >> prt. I really

[zfs-discuss] Performance data for dedup?

2010-04-24 Thread Roy Sigurd Karlsbakk
Hi all I've been playing a little with dedup, and it seems it needs a truckload of memory, something I don't have on my test systems. Does anyone have performance data for large (20TB+) systems with dedup? roy ___ zfs-discuss mailing list zfs-discuss@

Re: [zfs-discuss] Extremely slow raidz resilvering

2010-04-24 Thread Roy Sigurd Karlsbakk
ZFS first does a scan of indicies and such, which requires lots of seeks. After that, the resilvering starts. I guess if you give it an hour, it'll be done roy - "Leandro Vanden Bosch" skrev: Hello everyone, As one of the steps of improving my ZFS home fileserver (snv_134) I wanted t

Re: [zfs-discuss] ZFS RAID-Z2 degraded vs RAID-Z1

2010-04-24 Thread Roy Sigurd Karlsbakk
vs RaidZ3 - 1disk. A degraded raidz2 (minus one disk) will offer the same redundancy as raidz1 would, and the same numbers will apply to raidz3 vs raidz2. One of the good reasons of using raidz2 or even raidz3 is the chance of sector failure during the eventual resilver. Best regards roy -- Roy

Re: [zfs-discuss] SAS vs SATA: Same size, same speed, why SAS?

2010-04-26 Thread Roy Sigurd Karlsbakk
- "Dave Pooser" skrev: > I'm building another 24-bay rackmount storage server, and I'm > considering > what drives to put in the bays. My chassis is a Supermicro SC846A, so > the > backplane supports SAS or SATA; my controllers are LSI3081E, again > supporting SAS or SATA. > > Looking at dri

Re: [zfs-discuss] Help:Is zfs-fuse's performance is not good

2010-04-26 Thread Roy Sigurd Karlsbakk
- "Tonmaus" skrev: > I wonder if this is the right place to ask, as the Filesystem in User > Space implementation is a separate project. In Solaris ZFS runs in > kernel. FUSE implementations are slow, no doubt. Same goes for other > FUSE implementations, such as for NTFS. The classic answers

Re: [zfs-discuss] SAS vs SATA: Same size, same speed, why SAS?

2010-04-26 Thread Roy Sigurd Karlsbakk
- "Brandon High" skrev: > SAS drives are generally intended to be used in a multi-drive / RAID > environment, and are delivered with TLER / CCTL / ERC enabled to > prevent them from falling out of arrays when they hit a read error. > > SAS drives will generally have a longer warranty than de

Re: [zfs-discuss] Solaris 10 and ZFS dedupe status

2010-04-26 Thread Roy Sigurd Karlsbakk
- "Neil Simpson" skrev: > I'm pretty sure Solaris 10 update 9 will have zpool version 22 so WILL > have dedup. Interesting - from where do you have this information? roy ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolar

Re: [zfs-discuss] SAS vs SATA: Same size, same speed, why SAS?

2010-04-26 Thread Roy Sigurd Karlsbakk
> This really depends on if you are willing to pay in advance, or pay > after the failure. Even with redundancy, the cost of a failure may be > > high due to loss of array performance and system administration time. > > Array performance may go into the toilet during resilvers, depending > on

Re: [zfs-discuss] SAS vs SATA: Same size, same speed, why SAS?

2010-04-27 Thread Roy Sigurd Karlsbakk
- "Daniel Carosone" skrev: > On Mon, Apr 26, 2010 at 10:02:42AM -0700, Chris Du wrote: > > SAS: full duplex > > SATA: half duplex > > > > SAS: dual port > > SATA: single port (some enterprise SATA has dual port) > > > > SAS: 2 active channel - 2 concurrent write, or 2 read, or 1 write > and

Re: [zfs-discuss] ZFS deduplication ratio on Server 2008 backup VHD files

2010-04-27 Thread Roy Sigurd Karlsbakk
- "Tim.Kreis" skrev: > The problem is that the windows server backup seems to choose dynamic > > vhd (which would make sense in most cases) and I dont know if there is > a > way to change that. Using ISCSI-volumes wont help in my case since > servers are running on physical hardware. It s

[zfs-discuss] Performance drop during scrub?

2010-04-27 Thread Roy Sigurd Karlsbakk
scrub's priority somehow? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] Performance drop during scrub?

2010-04-29 Thread Roy Sigurd Karlsbakk
I got this hint from Richard Elling, but haven't had time to test it much. Perhaps someone else could help? roy > Interesting. If you'd like to experiment, you can change the limit of the > number of scrub I/Os queued to each vdev. The default is 10, but that > is too close to the normal lim

[zfs-discuss] Question about du and compression

2010-04-29 Thread Roy Sigurd Karlsbakk
of data to somewhere to find it's twice as big as reported by du. Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pe

Re: [zfs-discuss] Performance drop during scrub?

2010-04-30 Thread Roy Sigurd Karlsbakk
> On Thu, 29 Apr 2010, Tonmaus wrote: > > > Recommending to not using scrub doesn't even qualify as a > > workaround, in my regard. > > As a devoted believer in the power of scrub, I believe that after the > > OS, power supplies, and controller have been verified to function with > a good scrub

Re: [zfs-discuss] Panic when deleting a large dedup snapshot

2010-05-01 Thread Roy Sigurd Karlsbakk
- "Cindy Swearingen" skrev: > Brandon, > > You're probably hitting this CR: > > http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6924824 Interesting - reported in february and still no fix? roy ___ zfs-discuss mailing list zfs-discuss@

Re: [zfs-discuss] rpool gone after zpool detach

2010-05-02 Thread Roy Sigurd Karlsbakk
- "Jan Riechers" skrev: I am using a mirrored system pool on 2 80G drives - however I was only using 40G since I thought I might use the rest for something else. ZFS Time Slider was complaining the pool was filled for 90% and I decided to increase pool size. What I did was a zpool detac

Re: [zfs-discuss] zpool rename?

2010-05-02 Thread Roy Sigurd Karlsbakk
- "Richard L. Hamilton" skrev: > One can rename a zpool on import > > zpool import -f pool_or_id newname > > Is there any way to rename it (back again, perhaps) > on export? > > (I had to rename rpool in an old disk image to access > some stuff in it, and I'd like to put it back the way it

[zfs-discuss] zfs testing / problems

2010-05-02 Thread Roy Sigurd Karlsbakk
44d0ba0 zfs:spa_sync+3a9 () May 2 17:42:09 mime genunix: [ID 655072 kern.notice] ff00044d0c40 zfs:txg_sync_thread+24a () May 2 17:42:09 mime genunix: [ID 655072 kern.notice] ff00044d0c50 unix:thread_start+8 () Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net h

Re: [zfs-discuss] zpool mirror (dumb question)

2010-05-02 Thread Roy Sigurd Karlsbakk
> I am currently using OpenSolaris 2009.06 > If I was to upgrade to the current "developer" version, forgive my > ignorance > (since I am new to *solaris), but how would I do this? # pkg set-publisher -O http://pkg.opensolaris.org/dev opensolaris.org # pkg image-update That'll take you to snv_134

Re: [zfs-discuss] First Setup

2010-05-02 Thread Roy Sigurd Karlsbakk
(consumer) 2TB drives, but that's your choice :) Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å u

Re: [zfs-discuss] Performance drop during scrub?

2010-05-02 Thread Roy Sigurd Karlsbakk
- "Roy Sigurd Karlsbakk" skrev: > Hi all > > I have a test system with snv134 and 8x2TB drives in RAIDz2 and > currently no Zil or L2ARC. I noticed the I/O speed to NFS shares on > the testpool drops to something hardly usable while scrubbing the > pool. >

Re: [zfs-discuss] Default 'zpool' I want to move it to my new raidz pool 'gpool' how?

2010-05-02 Thread Roy Sigurd Karlsbakk
existing "gpool" so that I have > a RAIDZ of 6x drives. > > Any guidance on how to do it? I tried to do zfs snapshot You can't boot off raidz. That's for data only. Get a couple of cheap drives or SSDs for the root and use the large drives for data Vennlige h

Re: [zfs-discuss] zpool rename?

2010-05-03 Thread Roy Sigurd Karlsbakk
Hi Does this mean exporting and re-importing a rpool break things? I have tried exporting and re-importing other pools with new names and yet haven't seen problems with it roy - "Cindy Swearingen" skrev: > Hi Richard, > > Renaming the root pool is not recommended. I have some details on

Re: [zfs-discuss] Is it safe to disable the swap partition?

2010-05-09 Thread Roy Sigurd Karlsbakk
ways good to be sure ... This is the case with most OSes now. Swap out stuff early, perhaps keep it in RAM and swap at the same time, and the kernel can choose what to do later. In Linux you can set it in /proc/sys/vm/swappiness. Anyone that knows how this is tuned in osol, btw? Bes

Re: [zfs-discuss] Supermicro AOC-SAT2-MV8 -- cfgadm won't create attach point (dsk/xxxx)

2010-05-09 Thread Roy Sigurd Karlsbakk
- "Giovanni" skrev: > Hi, > > Were you ever able to solve this problem on your AOC-SAT2-MV8 card? I > am in need of purchasing it to add more drives to my server. > What problem was this? I have two servers with these cards and the work well Best regards roy --

[zfs-discuss] osol monitoring question

2010-05-10 Thread Roy Sigurd Karlsbakk
tools exist that can do the same? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av

Re: [zfs-discuss] osol monitoring question

2010-05-10 Thread Roy Sigurd Karlsbakk
- "Michael Schuster" skrev: > On 10.05.10 08:57, Roy Sigurd Karlsbakk wrote: > > Hi all > > > > It seems that if using zfs, the usual tools like vmstat, sar, top > etc are quite worthless, since zfs i/o load is not reported as iowait > etc. Are there any

Re: [zfs-discuss] Problems (bug?) with slow bulk ZFS filesystem creation

2010-05-10 Thread Roy Sigurd Karlsbakk
all to be individual > ZFS file systems, but there seems to be a bug/limitation due to the > prohibitive creation time. Is there a chance of you running out of memory here? If ZFS runs out of memory, it'll read indicies from disk instead of keeping them in memory, something that can al

Re: [zfs-discuss] Problems (bug?) with slow bulk ZFS filesystem creation

2010-05-10 Thread Roy Sigurd Karlsbakk
- "Roy Sigurd Karlsbakk" skrev: > - "charles" skrev: > > > Hi, > > > > This thread refers to Solaris 10, but it was suggested that I post > it > > here as ZFS developers may well be more likely to respond. > > > &g

Re: [zfs-discuss] ZFS and Comstar iSCSI BLK size

2010-05-10 Thread Roy Sigurd Karlsbakk
of memory (or l2arc) will be required per terabyte for the DDT, which is quite a lot... Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ f

Re: [zfs-discuss] How can I be sure the zfs send | zfs received is correct?

2010-05-10 Thread Roy Sigurd Karlsbakk
- "Jim Horng" skrev: > zfs send tank/export/projects/project1...@today | zfs receive -d > mpool Perhaps zfs send -R is what you're looking for... roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det

Re: [zfs-discuss] Opteron 6100? Does it work with opensolaris?

2010-05-11 Thread Roy Sigurd Karlsbakk
Product/Product.aspx?Item=N82E16813182230 I'd hate to buy it and find out it doesn't work. AFAIK this is just yet another Opteron, only with a bunch more of cores ... roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogi

Re: [zfs-discuss] Sun X4500 disk drives

2010-05-12 Thread Roy Sigurd Karlsbakk
te cache? Compared to what you have now, I gues anything will do. It doesn't need to be 500 gigs, just use something >= that size, preferably larger, in case the 500 gigs turns out to be 499. Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsba

[zfs-discuss] Using WD Green drives?

2010-05-13 Thread Roy Sigurd Karlsbakk
Hi all I've been reading a little, and it seems using WD Green drives isn't very popular in here. Can someone explain why these are so much worse than others? Usually I see drives go bad with more or less the same frequency... Best regards roy -- Roy Sigurd Karlsbakk (+47)

Re: [zfs-discuss] Using WD Green drives?

2010-05-13 Thread Roy Sigurd Karlsbakk
ays to scrub it. Does anyone have scrub times for similar setups with, say, Black drives? > (3) They seem to have a lot of platters.. 3 or 4. More platters == > more heat == more failure... apparently. I somehow doubt Black drives have less platters Best regards roy -- Roy Sigurd Karl

Re: [zfs-discuss] Using WD Green drives?

2010-05-13 Thread Roy Sigurd Karlsbakk
ly archive data, no reads exceeding the ethernet bandwidth Vennlige hilsener roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å

Re: [zfs-discuss] Moved disks to new controller - cannot import pool even after moving back

2010-05-15 Thread Roy Sigurd Karlsbakk
ms with this in later versions, but I don't have the links handy - google for it :) Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ

Re: [zfs-discuss] 3 Data Disks: partitioning for 1 Raid0 and 1 Raidz1

2010-05-15 Thread Roy Sigurd Karlsbakk
d inner, although space-wise, the curve is not linear, since most of the data is stored in the outer parts (due to more sectors per cylinder there). Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pe

Re: [zfs-discuss] Moved disks to new controller - cannot import pool even after moving back

2010-05-15 Thread Roy Sigurd Karlsbakk
0 0 c11d0s1ONLINE 0 0 0 spares c9t7d0 AVAIL -- Vennlige hilsener roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er

Re: [zfs-discuss] 3 Data Disks: partitioning for 1 Raid0 and 1 Raidz1

2010-05-15 Thread Roy Sigurd Karlsbakk
it seems fdisk partitions aren't automatically recognized if moving a port, while slices are. I think you should change that to slices. Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presentere

Re: [zfs-discuss] ZFS home server (Brandon High)

2010-05-15 Thread Roy Sigurd Karlsbakk
er today about the choice of SAS/SATA controllers. Most will do in a home server environment, though. AOC-SAT2-MV8 are great controllers, but run on PCI-X, which isn't very compatible with PCI Express Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.

Re: [zfs-discuss] Unable to Destroy One Particular Snapshot

2010-05-15 Thread Roy Sigurd Karlsbakk
for ZFS all involve serial consoles, which did not work, and takes a lot of time debugging). Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært i

[zfs-discuss] dedup status

2010-05-15 Thread Roy Sigurd Karlsbakk
hough I've from what I've got on this list) on how much memory one should have for deduping an xTiB dataset. Does anyone know how the status is for dedup now? In 134 it doesn't work very well, but is it better in ON140 etc? Best regards roy -- Roy Sigurd Karlsbakk (+47) 9754268

Re: [zfs-discuss] dedup status

2010-05-16 Thread Roy Sigurd Karlsbakk
- "Erik Trimble" skrev: > Roy Sigurd Karlsbakk wrote: > > Hi all > > > > I've been doing a lot of testing with dedup and concluded it's not > really ready for production. If something fails, it can render the > pool unuseless for hours or maybe

Re: [zfs-discuss] Unable to Destroy One Particular Snapshot

2010-05-16 Thread Roy Sigurd Karlsbakk
. Some seems to be fixed in 135, and it was said here on the list that all known bugs should be fixed before the next release (see my thread 'dedup status') roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt

Re: [zfs-discuss] Unable to Destroy One Particular Snapshot

2010-05-16 Thread Roy Sigurd Karlsbakk
- "Roy Sigurd Karlsbakk" skrev: > - "John Balestrini" skrev: > > > Yep. Dedup is on. A zpool list shows a 1.50x dedup ratio. I was > > imagining that the large ratio was tied to that particular snapshot. > > > > basie@/root# zpool list

Re: [zfs-discuss] dedup status

2010-05-16 Thread Roy Sigurd Karlsbakk
.0, then this number will scale linearly with > size. > If the dedup rate > 1.0, then this number will not scale linearly, it > will be > less. So you can use the linear scale as a worst-case approximation. How large was this filesystem? Are there any good ways of planning memory or SS

Re: [zfs-discuss] Is dedupe ready for prime time?

2010-05-18 Thread Roy Sigurd Karlsbakk
ey on l2arc, since it _will_ require either massive amounts of RAM or some good SSDs for l2arc. Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært im

Re: [zfs-discuss] Is dedupe ready for prime time?

2010-05-18 Thread Roy Sigurd Karlsbakk
er, osol won't use more than top half of memory size for zil, so you can probably slice it up and use the rest for l2arc. Vennlige hilsener roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presen

Re: [zfs-discuss] ZFS memory recommendations

2010-05-19 Thread Roy Sigurd Karlsbakk
It recommends that for every TB of storage you have you want 1GB of > RAM just for the metadata. That's for dedup, 150 bytes per block, meaning approx 1GB per 1TB if all (or most) are 128kB blocks, and way more memory (or L2ARC) if you have small files. Vennlige hilsener / Best regards ro

Re: [zfs-discuss] root pool mirror problems

2010-05-20 Thread Roy Sigurd Karlsbakk
=on and detach the 7,5GB drive and try to attach another 7,5GB drive, I don't think it'll work very well. Again, I'd use slices. I think, though, osol disables write cache if working with slices, and not drives. A also think this can be forced to on, but I don't know how

Re: [zfs-discuss] zfs question

2010-05-20 Thread Roy Sigurd Karlsbakk
hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed

Re: [zfs-discuss] reconstruct recovery of rpool zpool and zfs file system with bad sectors

2010-05-20 Thread Roy Sigurd Karlsbakk
want the data or zfs send/receive if you also want the snapshots etc). This might take a while with bad sectors and disk timeouts, but you'll get (most of?) your data moved over without much hassle. Just my two c. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 9754

Re: [zfs-discuss] Interesting experience with Nexenta - anyone seen it?

2010-05-20 Thread Roy Sigurd Karlsbakk
on a UPS while the server is, so it's not an issue. :) Disabling ZIL is, according to ZFS best practice, NOT recommended. Get some SSD for the Zil instead, preferably mirrored. You won't need a lot, ZIL never uses more than half the RAM size Vennlige hilsener / Best regards roy -- Roy S

Re: [zfs-discuss] don't mount a zpool on boot

2010-05-20 Thread Roy Sigurd Karlsbakk
lsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinne

Re: [zfs-discuss] Understanding ZFS performance.

2010-05-22 Thread Roy Sigurd Karlsbakk
.9 4 37 0 0 > 0 0 c4t17d0 Seems to me c9d1 is having a hard time. How is your zpool layout? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelli

[zfs-discuss] Windows file versioning integration?

2010-05-27 Thread Roy Sigurd Karlsbakk
Hi all Since Windows 2003 Server or so, it has had some versioning support usable from the client side if checking the properties on a file. Is it somehow possible to use this functionality with ZFS snapshots? -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r

Re: [zfs-discuss] nfs share of nested zfs directories?

2010-05-27 Thread Roy Sigurd Karlsbakk
each a zfs filesystem, each shared with the proper sharenfs permissions. Did I miss a browse or traverse option somewhere? is mydir2 on a separate filesystem/dataset? -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.n

[zfs-discuss] zpool/zfs list question

2010-05-30 Thread Roy Sigurd Karlsbakk
iB or even bytes? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av i

Re: [zfs-discuss] zpool/zfs list question

2010-05-31 Thread Roy Sigurd Karlsbakk
- "Brandon High" skrev: > On Sun, May 30, 2010 at 11:46 AM, Roy Sigurd Karlsbakk > wrote: > > Is there a way to report zpool/zfs stats in a fixed scale, like KiB > or even bytes? > > Some (but not all) commands use -p. > -p >

Re: [zfs-discuss] zpool/zfs list question

2010-05-31 Thread Roy Sigurd Karlsbakk
- "Andreas Grüninger" skrev: > Use > > zfs get -Hp used pool1/nfs1 > > to get a parsable output. r...@mime:~$ zfs get -Hp testpool bad property list: invalid property 'testpool' Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+4

Re: [zfs-discuss] Deduplication and ISO files

2010-06-04 Thread Roy Sigurd Karlsbakk
or the index to stay in RAM. 64k blocks, the double, et cetera... l2arc will help a lot if memory is low Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intell

Re: [zfs-discuss] zfs corruptions in pool

2010-06-06 Thread Roy Sigurd Karlsbakk
f painful to digest. ZFS guarantees consistency in a redundant setup, but it looks like your pool only consists of one drive, meaning zero redundancy > 3. The action says "Determine if the device needs to be replaced". How > the heck do I do that? attach nother drive, mirror, detat

Re: [zfs-discuss] Deduplication and ISO files

2010-06-06 Thread Roy Sigurd Karlsbakk
h only 128k blocks Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anven

Re: [zfs-discuss] Deduplication and ISO files

2010-06-06 Thread Roy Sigurd Karlsbakk
- "Brandon High" skrev: > On Sun, Jun 6, 2010 at 3:26 AM, Roy Sigurd Karlsbakk > wrote: > > - "Brandon High" skrev: > >> Decreasing the block size increases the size of the dedup table > >> (DDT). > >> Every entry in the DD

Re: [zfs-discuss] Homegrown Hybrid Storage

2010-06-07 Thread Roy Sigurd Karlsbakk
er is located some 50km from home, so I need something that works, not part of the time, but all the time. Due to this, I'd recommend against VirtualBox on OpenSolaris. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.kar

Re: [zfs-discuss] Deduplication and ISO files

2010-06-07 Thread Roy Sigurd Karlsbakk
018.html) > "Around 270 bytes, or one 512 byte sector." I guess this then means you'll need to change the 1GiB per 1TiB deduplicated to 2GiB per 1TiB and way more with smaller blocks... Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk

Re: [zfs-discuss] Deduplication and ISO files

2010-06-07 Thread Roy Sigurd Karlsbakk
would need more RAM in this setup... > > Ray With 4k recordsize, you won't have enough memory slots for the memory. Grab a few X25-Ms or something to do the buffering Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ --

Re: [zfs-discuss] Add remote disk to zfs pool

2010-06-09 Thread Roy Sigurd Karlsbakk
what you are looking for. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse

Re: [zfs-discuss] Reconfiguring a RAID-Z dataset

2010-06-10 Thread Roy Sigurd Karlsbakk
ssion, dedup etc, although I don't recommend dedup as of 134), restore the data. Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imp

Re: [zfs-discuss] Please trim posts

2010-06-10 Thread Roy Sigurd Karlsbakk
top-posts and similar bottom-posts where everything in the thread is kept. This is not good netiquette, even in 2010. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenter

Re: [zfs-discuss] Reconfiguring a RAID-Z dataset

2010-06-11 Thread Roy Sigurd Karlsbakk
there some other way to create a solid clone, particularly with a machine that won't have the same drive configuration? read up about zfs send/receive :) Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/

[zfs-discuss] Crucial RealSSD C300 and cache flush?

2010-06-11 Thread Roy Sigurd Karlsbakk
Hi all Crucial RealSSD C300 has been released and showing good numbers for use as Zil and L2ARC. Does anyone know if this unit flushes its cache on request, as opposed to Intel units etc? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http

Re: [zfs-discuss] size of slog device

2010-06-14 Thread Roy Sigurd Karlsbakk
bsolute maximum value is the size of > main memory. Is this correct? ZFS uses at most RAM/2 for ZIL Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelli

Re: [zfs-discuss] size of slog device

2010-06-14 Thread Roy Sigurd Karlsbakk
- Original Message - > On Mon, 14 Jun 2010, Roy Sigurd Karlsbakk wrote: > > >> There is absolutely no sense in having slog devices larger than > >> then main memory, because it will never be used, right? > >> ZFS will rather flush the txg to disk than rea

Re: [zfs-discuss] Sync Write - ZIL log performance - Feedback for ZFS developers?

2010-06-14 Thread Roy Sigurd Karlsbakk
ing is not done if there are any slogs because I found it didn't perform as well. Probably ought to be re-evaluated. Won't this affect NFS/iSCSI performance pretty badly where the ZIL is crucial? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@

[zfs-discuss] Scrub issues

2010-06-14 Thread Roy Sigurd Karlsbakk
developers? Will it be addressed? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv

Re: [zfs-discuss] High-Performance ZFS (2000MB/s+)

2010-06-15 Thread Roy Sigurd Karlsbakk
ase just check sizeof that struct? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå ekses

Re: [zfs-discuss] Complete Linux Noob

2010-06-15 Thread Roy Sigurd Karlsbakk
Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer me

Re: [zfs-discuss] COMSTAR iSCSI and two Windows computers

2010-06-20 Thread Roy Sigurd Karlsbakk
ant to look into glusterfs if you want a redundant storage system Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imper

[zfs-discuss] One dataset per user?

2010-06-20 Thread Roy Sigurd Karlsbakk
L2ARC (shared with SLOG, we just use some slices for that). Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ f

Re: [zfs-discuss] One dataset per user?

2010-06-21 Thread Roy Sigurd Karlsbakk
- Original Message - > On Jun 20, 2010, at 11:55, Roy Sigurd Karlsbakk wrote: > > > There will also be a few common areas for each department and > > perhaps a backup area. > > The back up area should be on a different set of disks. > > IMHO, a back up i

Re: [zfs-discuss] One dataset per user?

2010-06-21 Thread Roy Sigurd Karlsbakk
ase tell :) Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idi

Re: [zfs-discuss] One dataset per user?

2010-06-21 Thread Roy Sigurd Karlsbakk
- Original Message - > On Jun 21, 2010, at 05:00, Roy Sigurd Karlsbakk wrote: > > > So far the plan is to keep it in one pool for design and > > administration simplicity. Why would you want to split up (net) 40TB > > into more pools? Seems to me that'll me

Re: [zfs-discuss] One dataset per user?

2010-06-21 Thread Roy Sigurd Karlsbakk
- Original Message - > > From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > > boun...@opensolaris.org] On Behalf Of Roy Sigurd Karlsbakk > > > > Close to 1TB SSD cache will also help to boost read > > speeds, > > Remember, this will not

[zfs-discuss] SLOG striping?

2010-06-21 Thread Roy Sigurd Karlsbakk
doubt about the effect. Does anyone know if this will help gaining performance? Or will it be bad? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. D

Re: [zfs-discuss] VXFS to ZFS Quota

2010-06-21 Thread Roy Sigurd Karlsbakk
k in there. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av

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