Re: [zfs-discuss] Confused about consumer drives and zfs can someone help?
There is alot there to reply to...but I will try and help... Re. TLER. Do not worry about TLER when using ZFS. ZFS will handle it either way and will NOT time out and drop the drive...it may wait a long time, but it will not time out and drop the drive - nor will it have an issue if you do enable TLER-ON (which sets time out to 7 seonds). I run both with TLER-ON (disks from an old mdadm raid array) and without (TLER-OFF) 1.5TB WDEADS. I can not speak for the WD EARS, but the WDEADS are fine in my home nas. I also run 1.5TB Samsung Green/Silencer series and Seagate 11's. Others swear by Hitachi. I would recommend the Samsung or Hitachi and not the new WD EARS which have that 4k sectors or whatever it is. Re the CPU, do not go low power Atom etc, go a newish Core2 duo...the power differential at idle is bugger all and when you want to use the nas, ZFS will make good use of the CPU. Honestly, sit down and do the calculations on power savings of a low power cpu and you'll see it's better to just not have that 5th beer on a friday - you'll save more money that way and be MUCH happier with your nas performance. re. cards...I use and recommend these 8-Port SUPERMICRO AOC-USASLP-L8I UIO SAS. They are cheap on e-bay, just work and are fast. Use them. You do want alot of ram I use 8GB, but you can use 4. Ram is cheap, ZFS loves ram, just buy 8. IMHO (and that of the best practice guide) - you should mirror the rpool (o/s disk). Just buy 2 cheap laptop drives and when installing choose to mirror them. I hope that helps. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] NFS performance?
I agree, I get apalling NFS speeds compared to CIFS/Samba..ie. CIFS/Samba of 95-105MB and NFS of 5-20MB. Not the thread hijack, but I assume a SSD ZIL will similarly improve an iSCSI target...as I am getting 2-5MB on that too. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] physically removed a pool - how to I tell it to forget the pool?
Hi guys, I physically removed disks from a pool without offlining the pool first...(yes I know) anyway I now want to delete/destroy the pool...but zpool destroy -f dvr says can not open 'dvr':no such pool I can not offline it or delete it! I want to reuse the name dvr but how do I do this? ie. how do I totally delete a pool who's disks have been physically removed? -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] physically removed a pool - how to I tell it to forget the pool?
It was fine on the reboot...so even though zfs destroy threw up the errors, it did remove them...just needed a reboot to refresh/remove it in the zpool list. thanks. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Performance advantages of spool with 2x raidz2 vdevs vs. Single vdev
Hi guys, I am about to reshape my data spool and am wondering what performance diff. I can expect from the new config. Vs. The old. The old config. Is a pool of a single vdev of 8 disks raidz2. The new pool config is 2vdev's of 7 disk raidz2 in a single pool. I understand it should be better with higher io throughputand better read/write rates...but interested to hear the science behind it. I have googles and read the ifs best practice guide and evil tuning, but neither cover my question. Appreciate any advice. FYI, it's just a home serverbut I like it. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Performance advantages of spool with 2x raidz2 vdevs vs
Thanks, seems simple. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] zfs send/receive - actual performance
If you see the workload on the wire go through regular patterns of fast/slow response then there are some additional tricks that can be applied to increase the overall throughput and smooth the jaggies. But that is fodder for another post... Can you pls. elaborate on what can be done here as I am seeing this. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Intel SASUC8I - worth every penny
Glad you got it humming! I got my (2x) 8 port LSI cards from here for $130USD... http://cgi.ebay.com/BRAND-NEW-SUPERMICRO-AOC-USASLP-L8I-UIO-SAS-RAID_W0QQitemZ280397639429QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item4149006f05 Works perfectly. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Intel SASUC8I - worth every penny
Hi, I suspect mine are already IT mode...not sure how to confirm that though...I have had no issues. My controller is showing as C8...odd isn't it. It's in the 16xPCIE slot at the moment...I am not sure how it gets the number... -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS for my home RAID? Or Linux Software RAID?
Hi Jason, I spent months trying different O/S's for my server and finally settled on opensolaris. The o/s is just as easy to install/learn or use than any of the Linux variants...and ZFS beats mdadm hands down. I had a server up and sharing files in under an hour. Just do it - (you'll know soon enough if the hardware is going to support opensolaris). If you are unsure, start by installing it to a virtual machine (ie. VirtualBox) and have a play. It's a very helpful community here and you'll get all the support you'll need. I found these links and they may help get you started... [url=http://blogs.sun.com/icedawn/entry/bondin]SETTING UP AN OPENSOLARIS NAS BOX: FATHER-SON BONDING[/url] - a very simple/easy guide..all you'll needed to get a ZFS server up and running. [url=http://flux.org.uk/howto/solaris/zfs_tutorial_01]zfs tutorial part 1[/url] [url=http://malsserver.blogspot.com/2008/08/setting-up-static-network-configuration.html]Setting up a static network configuration with NWAM[/url] [url=http://forums.opensolaris.com/message.jspa?messageID=1125]How do you configure OpenSolaris to automatically login a user?[/url] [url=http://wikis.sun.com/display/OpenSolarisInfo/How+to+Set+Up+Samba+in+the+OpenSolaris+2009.06+Release]How to Set Up Samba in the OpenSolaris 2009.06 Release - Information Resources - wikis.sun.com[/url] [url=http://wiki.genunix.org/wiki/index.php/Getting_Started_With_the_Solaris_CIFS_Service]Getting Started With the Solaris CIFS Service[/url] [url=http://blogs.sun.com/pradhap/entry/mount_ntfs_ext2_ext3_in]Mount NTFS / Ext2 / Ext3 / FAT 16 / FAT 32 in Solaris[/url] and also [url=http://www.iiitmk.ac.in/wiki/index.php/How_to_Mount/Unmount_NTFS,FAT32,ext3_Partitions_in_Opensolaris_5.11_snv_101b]here[/url] - note 2G limit. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Thoughts pls. : Create 3 way rpool mirror and shelve one mirror as a backup
Thanks guys, It's all working perfectly so farand very easy too. Given that my boot disks (consumer laptop drives) cost only ~$60AUD each, it's a cheap way to maintain high availability and backup. ZFS does not seem to mind having one of the 3 offline so I'd recomend this to others looking for a simple offline backup solution (just remember to install grub on the spare to make it bootable)...but you'd test your backups anyway before you send them offsite...wouldn't you :) -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Thoughts pls. : Create 3 way rpool mirror and shelve one mirror as a backup
Hi guys, On my home server (2009.6) I have a 2 HDD's in a mirrored rpool. I just added a 3rd to the mirror and made all disks bootable (ie. installgrub on the mirror disks). My though is this, I remove the 3rd mirror disk and offsite it as a backup. That way if I mess up the rpool, I can get back the offsite HDD, boot from it and re-mirror this to the other 2 HDD's and I am back in business. I plan to leave the 3rd mirror device in the rpool (just no HDD loaded so it will show as degraded all the time). On a monthly basis, I'll physically insert the 3rd HDD and get it to resilver and then remove the 3rd hdd offsite again - ie. refresh the backup. Anyone see any flaws in this plan? -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] What's the advantage of using multiple filesystems in a pool
Ahh, interesting...once I get the data realatively stable in some of those sub-folders I wil create a file system, move the data in there and setup the snapshot for those that are relatively static...now I just need to do a load of reading about snapshots! Thanks again...sp much to learn. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] What's the advantage of using multiple filesystems in a pool
Thanks for that Erik. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] What's the advantage of using multiple filesystems in a pool
Hi guys, on my home server I have a variety of directories under a single pool/filesystem, Cloud. Things like cloud/movies - 4TB cloud/music - 100Gig cloud/winbackups - 1TB cloud/data - 1TB etc. After doing some reading, I see recomendations to have separate filesystem to improve performance...but not sure how as it's the same pool? Can someone help me understand if/why I should use separate file systems for these? ta. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Oops, ran zfs destroy after renaming a folder and deleted my file system.
Yes, I am glad that I learned this lesson now, rather than in 6 months when I have re-purposed the exiting drives...makes me all the more committed to maintaining an up to date remote backup. The reality is that I can not afford to mirror the 8TB in the zpool, so I'll balance the risk and just backup the important items like music, document and photo's. ISO's and DVD's I can always recreate. Thanks guys for the support. I'll do alot more reading on ZFS/datasets etc. befor I mess with the server again!...hmmm, actually, I just had a thought, I will also create a playpool when I can try out things before using them on the main pool. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Adding a zfs mirror drive to rpool - new drive formats to one cylinder less
Just an update on this, I was seeing high CPU utilisation (100% on all 4 cores) for ~10 seconds every 20 seconds when transfering files to the server using Samba under 133. So I rebooted and selected 111b and I no longer have the issue. Interestingly, the rpool is still in place..as it should be. So I have now set this 111b as my default BE ...and removed /dev from the update package list using ... $pfexec pkg set-publisher -O http://pkg.opensolaris.org/release opensolaris.org I am not sure if I had to run the installgrub again, but I did anyway. #installgrub -m /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c8t1d0s0 So all looking good now. I have my rpool mirror and am back on the stable release version. I am beginning to like opensolaris. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Adding a zfs mirror drive to rpool - new drive formats to one cylinder less
Thanks David. Re. the starting cylinder, it was more that one c8t0d0 the partition started at zero and c8t1d0 it started at 1. ie. c8t0d0 Partition Status Type Start End Length % = == = === == === 1 Active Solaris2 0 30401 30402 100 c8t1d0: Partition Status Type Start End Length % = == = === == === 1 Active Solaris2 1 30400 30400 100 All good now and yes, i did run installgrub...yet to test booting from c8t1d0 (with c8t0d0 removed). -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Oops, ran zfs destroy after renaming a folder and deleted my file system.
Ok, I know NOW that I should have used zfs rename...but just for the record, and to give you folks a laugh, this is the mistake I made... I created a zfs file system, cloud/movies and shared it. I then filled it with movies and music. I then decided to rename it, so I used rename in the Gnome to change the folder name to media...ie cloud/media. MISTAKE I then noticed the zfs share was pointing to /cloud/movies which no longer exists. So, I removed cloud/movies with zfs destroy --- BIGGER MISTAKE So, now I am restoring my media from backup. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Oops, ran zfs destroy after renaming a folder and deleted my file system.
Ok, I know NOW that I should have used zfs rename...but just for the record, and to give you folks a laugh, this is the mistake I made... I created a zfs file system, cloud/movies and shared it. I then filled it with movies and music. I then decided to rename it, so I used rename in the Gnome to change the folder name to media...ie cloud/media. MISTAKE I then noticed the zfs share was pointing to /cloud/movies which no longer exists. So, I removed cloud/movies with zfs destroy --- BIGGER MISTAKE So, now I am restoring my media from backup. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Oops, ran zfs destroy after renaming a folder and deleted my file system.
well, both I guess... I thought the dataset name was based upon the file system...so I was assuming that if i renamed the zfs filesystem (with zfs rename) it would also rename the dataset... ie... #zfs create tank/fred gives... NAMEUSED AVAIL REFER MOUNTPOINT tank/fred 26.0K 4.81G 10.0K /tank/fred and then #zfs rename tank/fred tank/mary will give... NAMEUSED AVAIL REFER MOUNTPOINT tank/mary 26.0K 4.81G 10.0K /tank/mary It's all rather confusing to a newbit like me I must admit...so please post examples so I can understand it. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Adding a zfs mirror drive to rpool - new drive formats to one cylinder less
Looks like an issue with the start /length of the partition table... These are the disks from fomrat... 8. c8t0d0 DEFAULT cyl 30399 alt 2 hd 255 sec 63 /p...@0,0/pci8086,3...@1f,2/d...@0,0 9. c8t1d0 DEFAULT cyl 30398 alt 2 hd 255 sec 63 /p...@0,0/pci8086,3...@1f,2/d...@1,0 Loking at the partitions, the existing rpool disk is formatted like this.. Total disk size is 30401 cylinders Cylinder size is 16065 (512 byte) blocks Cylinders Partition StatusType Start End Length% = == = === == === 1 ActiveSolaris2 0 3040130402100 The new disk is formatted like this... Total disk size is 30401 cylinders Cylinder size is 16065 (512 byte) blocks Cylinders Partition StatusType Start End Length% = == = === == === 1 ActiveSolaris2 1 3040030400100 I tried to manually create a partition by selecting part from the menu but I can not tell it to start at cyl. 0 or go to 30399... Help! Why is this so hard! -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Adding a zfs mirror drive to rpool - new drive formats to one cylinder less
Thanks for that. It seems strange though that the two disks, which are from the same manufacturer, same model, same firmware and similar batch/serial's behave differently. I am also puzzled that the rpool disk appears to start at cylinder 0 and not 1. I did find this quote after googling for the CR6844090 at the best practices page http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide The size of the replacements vdev, measured by usable sectors, must be the same or greater than the vdev being replaced. This can be confusing when whole disks are used because different models of disks may provide a different number of usable sectors. For example, if a pool was created with a 500 GByte drive and you need to replace it with another 500 GByte drive, then you may not be able to do so if the drives are not of the same make, model, and firmware revision. Consider planning ahead and reserving some space by creating a slice which is smaller than the whole disk instead of the whole disk. In Nevada, build 117, it might be possible to replace or attach a disk that is slight smaller than the other disks in a pool. This is CR 6844090. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
