[zfs-discuss] Performance with Sun StorageTek 2540

2008-02-14 Thread Bob Friesenhahn
). Can someone share with me what they think the write bottleneck might be and how I can surmount it? Thanks, Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-14 Thread Bob Friesenhahn
to achieve 300MB/second, a few tens of MB don't make much difference. It may be that I bought the wrong product, but perhaps there is a configuration change which will help make up some of the difference without sacrificing data reliability. Bob == Bob

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-14 Thread Bob Friesenhahn
it does not seem very suspect. bonnie++: http://www.sunfreeware.com/programlistintel10.html I will check it out. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] ZFS write throttling

2008-02-15 Thread Bob Friesenhahn
on the array, I see that it is actually fully busy. It seems that the application is stalled during this load. It also seems that simple operations like 'ls' get stalled under such heavy load. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-15 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-15 Thread Bob Friesenhahn
six LUNs are active to the other controller. Based on this, I should rebuild my pool by splitting my mirrors across this boundary. I am really happy that ZFS makes such things easy to try out. Bob == Bob Friesenhahn [EMAIL PROTECTED], http

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-15 Thread Bob Friesenhahn
:22662.79 KBps Average Written:5423.78 KBps Peak Written: 28036.43 KBps Average Read Size: 127.29 KB Average Write Size: 127.77 KB Cache Hit %:89.30 Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-15 Thread Bob Friesenhahn
not make a difference in the results. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-15 Thread Bob Friesenhahn
On Fri, 15 Feb 2008, Bob Friesenhahn wrote: Notice that the first six LUNs are active to one controller while the second six LUNs are active to the other controller. Based on this, I should rebuild my pool by splitting my mirrors across this boundary. I am really happy that ZFS makes

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-15 Thread Bob Friesenhahn
drives, with 24-drives total) so it seems that everything is working fine. This is a lesson for me, and I have certainly learned a fair amount about drive arrays, fiber channel, and ZFS, in the process. Bob == Bob Friesenhahn [EMAIL PROTECTED], http

[zfs-discuss] 'du' is not accurate on zfs

2008-02-15 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-16 Thread Bob Friesenhahn
StorageTek products, including the more expensive 6140 and 6540 arrays. It also compares well with similarly-sized storage products from other vendors. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer

Re: [zfs-discuss] 'du' is not accurate on zfs

2008-02-16 Thread Bob Friesenhahn
to provide a value suitable for humans. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-16 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-16 Thread Bob Friesenhahn
in the Common Array Manager? Does this feature maintain a redundant cache (two data copies) between controllers? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

[zfs-discuss] filebench for Solaris 10?

2008-02-16 Thread Bob Friesenhahn
? Will a package which works for Solaris 10 (which some of us are still using) be posted? Thanks, Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

[zfs-discuss] Recommendations for per-user NFS shared home directories?

2008-02-17 Thread Bob Friesenhahn
ownership of root:other (Solaris 9 clients), root:wheel (OS-X clients), and root:daemon (FreeBSD clients). Only Solaris 10 clients seem to preserve original ownership and permissions. Is there a way to resolve this problem? Thanks, Bob == Bob Friesenhahn

Re: [zfs-discuss] Recommendations for per-user NFS shared home directories?

2008-02-17 Thread Bob Friesenhahn
punted and all the users are in one filesystem. Probably the ZFS documentation which suggests creating per-user home directories should be updated so that the existing drawbacks are also known. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org

Re: [zfs-discuss] Recommendations for per-user NFS shared home directories?

2008-02-17 Thread Bob Friesenhahn
for that user. Yes, of course. This would be easy if I was running a homogeneous network, but instead I have to deal with several kinds of automounter, some of which seem to change between each major release. This seems like a good task for another day. Bob == Bob

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-18 Thread Bob Friesenhahn
for this equipment since it covers multi-thread I/O performance as well. The multi-user performance is considerably higher. Given ZFS's smarts, the JBOD approach seems like a good one as long as the hardware provides a non-volatile cache. Bob == Bob Friesenhahn

Re: [zfs-discuss] filebench for Solaris 10?

2008-02-19 Thread Bob Friesenhahn
SourceForge: # pkgadd -d . pkgadd: ERROR: no packages were found in /home/bfriesen/src/benchmark/filebench # ls install/ pkginfo pkgmapreloc/ My system has the latest package management patches applied. What am I missing? Bob == Bob Friesenhahn [EMAIL

Re: [zfs-discuss] five megabytes per second with Microsoft iSCSI initiator (2.06)

2008-02-19 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] filebench for Solaris 10?

2008-02-19 Thread Bob Friesenhahn
. Installing it based on the available documentation was an exercise in frustration. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] Preferred backup s/w

2008-02-22 Thread Bob Friesenhahn
not support an 'uninstall' target so now I am forced to manually remove it from my system. It seems that the best way to deal with star is to install it into its own directory so that it does not interfere with existing software. Bob == Bob Friesenhahn [EMAIL

Re: [zfs-discuss] Preferred backup s/w

2008-02-22 Thread Bob Friesenhahn
On Fri, 22 Feb 2008, Bob Friesenhahn wrote: where it decided to remove the GNU tar I had installed there. Star does not support traditional tar command line syntax so it can't be used with existing scripts. Performance testing showed that it was no more efficient than the 'gtar' which comes

Re: [zfs-discuss] Preferred backup s/w

2008-02-23 Thread Bob Friesenhahn
are adequate to deal with the massive data storage made easy with zfs storage pools. Zfs requires similarly innovative backup solutions to deal with it. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick

Re: [zfs-discuss] The old problem with tar, zfs, nfs and zil

2008-02-25 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-26 Thread Bob Friesenhahn
who is interested. Thanks Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] Performance with Sun StorageTek 2540

2008-02-27 Thread Bob Friesenhahn
of the elections? There was a time inversion layer in Texas. Fixed now ... Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs

Re: [zfs-discuss] Can ZFS be event-driven or not?

2008-02-27 Thread Bob Friesenhahn
descriptor, but then the underlying file is updated in a somewhat random fashion as dirty pages are written to disk. It seems that this hypothesis is without merit. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen

Re: [zfs-discuss] Can ZFS be event-driven or not?

2008-02-27 Thread Bob Friesenhahn
available. Consider this to be your life's mission. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss

Re: [zfs-discuss] Can ZFS be event-driven or not?

2008-02-28 Thread Bob Friesenhahn
the application until the I/O is done. If a file is updated via memory mapping, then the data sent to the underlying file is based on the system's virtual memory system so the actually data sent to disk may not be coherent at all. Bob == Bob Friesenhahn [EMAIL

Re: [zfs-discuss] Can ZFS be event-driven or not?

2008-02-28 Thread Bob Friesenhahn
Is it possible to create a ZFS pool using a backing file created in xattr space? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

[zfs-discuss] Patch 127729-07 not NFS patch!

2008-02-29 Thread Bob Friesenhahn
someone can fix this fat-fingered patch description in Sun Update Manager? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] periodic ZFS disk accesses

2008-03-01 Thread Bob Friesenhahn
files under 'Desktop' and likely other places as well to see if there are any updates. There may also be Gnome software which periodially saves its current state. I doubt that the accesses can be blamed on ZFS. Bob == Bob Friesenhahn [EMAIL PROTECTED], http

Re: [zfs-discuss] periodic ZFS disk accesses

2008-03-01 Thread Bob Friesenhahn
this file. Unsetting the MAIL environment variable may make the noise go away. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] Dealing with Single Bit Flips - WAS: Cause for data corruption?

2008-03-03 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Dealing with Single Bit Flips - WAS: Cause for data corruption?

2008-03-04 Thread Bob Friesenhahn
is incorrect rather than a way to tell that the data is correct. There may be several permutations of wrong data which can result in the same checksum, but the probability of encountering those permutations due to natural causes is quite small. Bob == Bob

Re: [zfs-discuss] zfs send/recv question

2008-03-07 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs

Re: [zfs-discuss] Preserve creator across send/receive

2008-03-11 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman

Re: [zfs-discuss] zfs backups to tape

2008-03-14 Thread Bob Friesenhahn
that can take data from Previously it was suggested on this list to use a special version of tar called 'star' (ftp://ftp.berlios.de/pub/star). Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer

[zfs-discuss] ZFS I/O algorithms

2008-03-15 Thread Bob Friesenhahn
0 c4t600A0B800039C9B50AB447B4595Fd0 ONLINE 0 0 0 Thanks, Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] ZFS I/O algorithms

2008-03-15 Thread Bob Friesenhahn
to performance due to the number of I/Os? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] ZFS I/O algorithms

2008-03-16 Thread Bob Friesenhahn
31173 2 0 94 2 284 1 183 5216 617 27 98 670 49544 3 0 93 3 176 1 239 748 353 555 25 76 620 39334 3 0 93 Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen

Re: [zfs-discuss] Microsoft WinFS for ZFS?

2008-03-17 Thread Bob Friesenhahn
of thing, but mainframes are essentially closed systems so the mainframe vendor has more control. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] Microsoft WinFS for ZFS?

2008-03-17 Thread Bob Friesenhahn
, so it would need to be able to work over SMB. Likewise, it should be possible to store the data on a server somewhere. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http

Re: [zfs-discuss] Microsoft WinFS for ZFS?

2008-03-18 Thread Bob Friesenhahn
ugly things before worrying about adding frosting on top. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs

Re: [zfs-discuss] ZFS I/O algorithms

2008-03-19 Thread Bob Friesenhahn
more write I/Os than if it has a lot of RAM. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing

Re: [zfs-discuss] ZFS I/O algorithms

2008-03-20 Thread Bob Friesenhahn
, the write block size no longer makes much difference and sometimes larger block sizes actually go slower. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] ZFS I/O algorithms

2008-03-20 Thread Bob Friesenhahn
are written very quickly, that when the file becomes bigger than the ARC, that what is contained in the ARC is mostly stale and does not help much any more. If the file is smaller than the ARC, then there is likely to be more useful caching. Bob == Bob

Re: [zfs-discuss] Backup-ing up ZFS configurations

2008-03-25 Thread Bob Friesenhahn
, the step of creating the pool is separate from the steps of creating the filesystems. Obviously these steps need to either be separate, or separable, so that a similar filesystem layout can be created with different hardware. Bob == Bob Friesenhahn [EMAIL PROTECTED

Re: [zfs-discuss] Best practices for ZFS plaiding

2008-03-26 Thread Bob Friesenhahn
administered hardware is more likely to encounter a problem. Local disk is usually more reliable than remote disk. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] Status of ZFS boot for sparc?

2008-03-26 Thread Bob Friesenhahn
dependencies? Will it work on old SPARC systems? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list

[zfs-discuss] Periodic flush

2008-03-26 Thread Bob Friesenhahn
delay into my application? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] Periodic flush

2008-03-27 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo

Re: [zfs-discuss] Periodic flush

2008-03-27 Thread Bob Friesenhahn
that my RAID array disks are loafing with only 9MB/second writes to each but with 82 writes/second. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] nfs and smb performance

2008-03-28 Thread Bob Friesenhahn
-ahead and tuning this value can help considerably for sequential access. Using gigabit eithernet with jumbo frames will improve performance even further. Notice that most of these tunings are for the client-side and not for the server. Bob == Bob Friesenhahn

Re: [zfs-discuss] nfs and smb performance

2008-03-28 Thread Bob Friesenhahn
that performance was very dependent on application write size regardless of client NFS tunings. Unfortunately, not everyone is using Solaris. The Solaris 10 NFS client implementation really screams. Bob == Bob Friesenhahn [EMAIL PROTECTED], http

Re: [zfs-discuss] Problem importing pool from BSD 7.0 into Nexenta

2008-03-31 Thread Bob Friesenhahn
and it can further sub-partition a FreeBSD partition for use in individual filesystems. Regardless, I am very interested to hear if ZFS pools can really be transferred back and forth between Solaris and FreeBSD. Bob == Bob Friesenhahn [EMAIL PROTECTED], http

Re: [zfs-discuss] OpenSolaris ZFS NAS Setup

2008-04-07 Thread Bob Friesenhahn
minutes is sufficient for use over the internet but seems excessive on a LAN. Have you investigated to see if the iSCSI client timeout parameters can be adjusted? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen

[zfs-discuss] ZFS volume export to USB-2 or Firewire?

2008-04-08 Thread Bob Friesenhahn
) in this way? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] Performance of one single 'cp'

2008-04-08 Thread Bob Friesenhahn
since GNU xargs supports --max-procs and --max-args arguments to allow executing commands concurrently with different sets of files. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http

Re: [zfs-discuss] ls -lt for links slower than for regular files

2008-04-08 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] ZFS volume export to USB-2 or Firewire?

2008-04-09 Thread Bob Friesenhahn
reliable portable storage device. Apparently this is not to be and it will be necessary to deal with iSCSI instead. I have never used iSCSI so I don't know how difficult it is to use as temporary removable storage under Windows or OS-X. Bob == Bob Friesenhahn

Re: [zfs-discuss] ZFS volume export to USB-2 or Firewire?

2008-04-09 Thread Bob Friesenhahn
in a USB or Firewire disk or does it require system administrator type knowledge? If you go to Starbucks, does your laptop attempt to mount your iSCSI volume on a (presumably) unreachable network? Bob == Bob Friesenhahn [EMAIL PROTECTED], http

Re: [zfs-discuss] OpenSolaris ZFS NAS Setup

2008-04-11 Thread Bob Friesenhahn
important recovery information for your machines. Open up the machine in advance and put sticky labels on the drives with their device names. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http

Re: [zfs-discuss] LZO compression?

2008-04-12 Thread Bob Friesenhahn
is that the author has worked really hard on a few CPU-specific optimizations. Is the license ok for Solaris? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] 24-port SATA controller options?

2008-04-14 Thread Bob Friesenhahn
cards. I see that there is an option to populate more cache RAM. I would be interested to know what actual throughput that one card is capable of. The CDW site says 300MB/s. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen

Re: [zfs-discuss] Performance of one single 'cp'

2008-04-14 Thread Bob Friesenhahn
' performance is about the same as Henrik's. The 'cp -r' performance is much less than disk benchmark tools would suggest. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] Confused by compressratio

2008-04-15 Thread Bob Friesenhahn
is all zeros. For ext3, inspecting all blocks for zeros would be viewed as unnecessary overhead. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] 24-port SATA controller options?

2008-04-15 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org

Re: [zfs-discuss] 24-port SATA controller options?

2008-04-15 Thread Bob Friesenhahn
and the devices are not dependent on some of the same things (e.g. power supplies, chassis, SATA controller, air conditioning) then what caused one device to fail may very well cause another device to fail. Bob == Bob Friesenhahn [EMAIL PROTECTED], http

Re: [zfs-discuss] Will ZFS employ raid0 stripes in an ordinary storage pool?

2008-04-15 Thread Bob Friesenhahn
less than the total available devices and since parity is distributed the parity could be written to any drive. I am sure that someone will correct me if the above is wrong. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen

Re: [zfs-discuss] Periodic flush

2008-04-15 Thread Bob Friesenhahn
code, all This is also a common scenario. :-) Presumably the special slow I/O code would not kick in unless the burst was large enough to fill quite a bit of the ARC. Real time throttling is quite a challenge to do in software. Bob == Bob Friesenhahn [EMAIL

Re: [zfs-discuss] 24-port SATA controller options?

2008-04-16 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] ZFS raidz write performance:what to expect from SATA drives on ICH9R (AHCI)

2008-04-17 Thread Bob Friesenhahn
On Thu, 17 Apr 2008, Tim wrote: Along those lines, I'd *strongly* suggest running Jeff's script to pin down whether one drive is the culprit: But that script only tests read speed and Pascal's read performance seems fine. Bob == Bob Friesenhahn [EMAIL

[zfs-discuss] Solaris 10U5 ZFS features?

2008-04-17 Thread Bob Friesenhahn
is provided by patches? Thanks, Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] ZFS raidz write performance:what to expect from SATA drives on ICH9R

2008-04-18 Thread Bob Friesenhahn
a fourth drive which is at least as good as the drives you are using for c1t1d0 and c1t2d0. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] ZFS raidz write performance:what to expect from SATA drives on ICH9R

2008-04-18 Thread Bob Friesenhahn
swap') and ZFS itself is able to support a swap volume. I don't think that you can put a normal swap file on ZFS so you would want to use ZFS's built-in support for that. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen

Re: [zfs-discuss] ZFS raidz write performance:what to expect from SATA drives on ICH9R

2008-04-19 Thread Bob Friesenhahn
to do. Regardless, with a 64-bit CPU and a 64-bit OS it seems like a crying shame to install less than 4GB of RAM. :-) Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http

Re: [zfs-discuss] ZFS raidz write performance:what to expect from SATA drives on ICH9R

2008-04-19 Thread Bob Friesenhahn
-efficient OS. Now if we could just get ZFS ARC and Gnome Desktop to not use any memory, we would be in nirvana. :-) Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

Re: [zfs-discuss] ZFS raidz write performance:what to expect from SATA drives on ICH9R

2008-04-19 Thread Bob Friesenhahn
area, and only remember that it exists via the process table. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs

Re: [zfs-discuss] backup for x4500?

2008-04-20 Thread Bob Friesenhahn
with a traditional incremental backup system? Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing

Re: [zfs-discuss] backup for x4500?

2008-04-20 Thread Bob Friesenhahn
backup interval would still be be limited to the time required to do one incremental backup. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org

[zfs-discuss] ZFS for write-only media?

2008-04-21 Thread Bob Friesenhahn
and then copying those individual files to optical storage. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs

Re: [zfs-discuss] ZFS for write-only media?

2008-04-21 Thread Bob Friesenhahn
On Mon, 21 Apr 2008, Dana H. Myers wrote: Bob Friesenhahn wrote: Are there any plans to support ZFS for write-only media such as optical storage? It seems that if mirroring or even zraid is used that ZFS would be a good basis for long term archival storage. I'm just going to assume

Re: [zfs-discuss] ZFS for write-only media?

2008-04-21 Thread Bob Friesenhahn
. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http

Re: [zfs-discuss] ZFS for write-only media?

2008-04-21 Thread Bob Friesenhahn
somewhat to address archiving. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] ZFS for write-only media?

2008-04-22 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Re: [zfs-discuss] ZFS for write-only media?

2008-04-22 Thread Bob Friesenhahn
of ZFS. It just not possible to correct the failed block on the media by re-writing it or moving its data to a new location. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http

Re: [zfs-discuss] ZFS for write-only media?

2008-04-22 Thread Bob Friesenhahn
, the media can be purchased from different vendors so there is less chance of similar bit-rot across the lot. With $40 to $200 million spent per project, a few extra copies is in the noise. :-) Bob == Bob Friesenhahn [EMAIL PROTECTED], http

Re: [zfs-discuss] Diverse, Dispersed, Distributed, Unscheduled RAID volumes

2008-04-25 Thread Bob Friesenhahn
was turned off (retries and 3+ minute iSCSI failure recovery logic). There would be additional dismal performance when the PC is turned back on due to cumulative resilvering. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen

Re: [zfs-discuss] zfs data corruption

2008-04-27 Thread Bob Friesenhahn
messages to a system logger. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss

Re: [zfs-discuss] ZFS - Implementation Successes and Failures

2008-04-28 Thread Bob Friesenhahn
;. Since then I am still quite satisified. ZFS has yet to report a bad block or cause me any trouble at all. The only complaint I would have is that 'cp -r' performance is less than would be expected given the raw bandwidth capacity. Bob == Bob Friesenhahn [EMAIL

Re: [zfs-discuss] ZFS, CIFS, slow write speed

2008-04-29 Thread Bob Friesenhahn
thing to try. The cheapy SOHO switch is the next most likely suspect. Device drivers are least suspect unless they have been configured to force the hardware to particular settings. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users

Re: [zfs-discuss] zfs performance so bad on my system

2008-04-29 Thread Bob Friesenhahn
doing the copy) to look for suspicious device behavior. Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss

Re: [zfs-discuss] share zfs hierarchy over nfs

2008-04-29 Thread Bob Friesenhahn
for Linux, I think that you will also need to figure out an indirect-map incantation which works for its own broken automounter. Make sure that you read all available documentation for the Linux automounter so you know which parts don't actually work. Bob == Bob

Re: [zfs-discuss] share zfs hierarchy over nfs

2008-04-30 Thread Bob Friesenhahn
and embarrassment when that poor system administrator returns the next day and finds that many users can not access their home directories! Bob == Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http

Re: [zfs-discuss] ZFS still crashing after patch

2008-05-01 Thread Bob Friesenhahn
== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org

Re: [zfs-discuss] ZFS still crashing after patch

2008-05-01 Thread Bob Friesenhahn
On Thu, 1 May 2008, Rustam wrote: operating system: 5.10 Generic_127112-07 (i86pc) Seems kind of old. I am using Generic_127112-11 here. Probably many hundreds of nasty bugs have been eliminated since the version you are using. Bob == Bob Friesenhahn

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