Re: [zfs-discuss] ZFS fsck?
- Original Message - From: Roy Sigurd Karlsbakk r...@karlsbakk.net To: OpenSolaris ZFS discuss zfs-discuss@opensolaris.org Sent: Tuesday, 6 July, 2010 6:35:51 PM Subject: [zfs-discuss] ZFS fsck? Hi all With several messages in here about troublesome zpools, would there be a good reason to be able to fsck a pool? As in, check the whole thing instead of having to boot into live CDs and whatnot? Vennlige hilsener / Best regards roy Scrub? :) ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Windows file versioning integration?
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? http://blogs.sun.com/amw/entry/using_the_previous_versions_tab ;) -- iMx i...@streamvia.net ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] iScsi slow
I've set up an iScsi volume on OpenSolaris (snv_134) with these commands: sh-4.0# zfs create rpool/iscsi sh-4.0# zfs set shareiscsi=on rpool/iscsi sh-4.0# zfs create -s -V 10g rpool/iscsi/test The underlying zpool is a mirror of two SATA drives. I'm connecting from a Mac client with global SAN initiator software, connected via Gigabit LAN. It connects fine, and I've initialiased a mac format volume on that iScsi volume. Performance, however, is terribly slow, about 10 times slower than an SMB share on the same pool. I expected it would be very similar, if not faster than SMB. Here's my test results copying 3GB data: iScsi: 44m01s 1.185MB/s SMB share: 4m27 11.73MB/s Reading (the same 3GB) is also worse than SMB, but only by a factor of about 3: iScsi: 4m36 11.34MB/s SMB share: 1m45 29.81MB/s Is there something obvious I've missed here? -- Hi Matt, here is a decent post on how to setup the COMSTAR and disable the old iscsitgt service. http://toic.org/2009/11/08/opensolaris-server-with-comstar-and-zfs/ Have a great day! Geoff You should also look into block alignment as well, to prevent unnecessary hits on the drives during reads/writes. -- iMx i...@streamvia.net www.slashdevslashnull.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Ideal SATA/SAS Controllers for ZFS
I've spent some time looking at the capabilities of a few controllers based on the questions about the SiI3124 and PMP support. According to the docs, the Marvell 88SX6081 driver doesn't support NCQ or PMP, though the card does. While I'm not really performance bound on my system, I imagine NCQ would help performance a bit, at least for scrubs or resilvers. Even more so because I'm using the slow WD10EADS drives. This raises the question of whether a SAS controller supports NCQ for sata drives. Would an LSI 1068e based controller? What about a LSI 2008 based card? -B Im seeing some issues with the sil3124 at the moment, with 100% %w blocking - leading to stuttering of streams etc. Check out the storage-discuss or osol-discuss lists, if youre a member of them. -- iMx i...@streamvia.net www.slashdevslashnull.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Removing disks from a ZRAID config?
- Original Message - From: Forrest Aldrich for...@gmail.com To: zfs-discuss@opensolaris.org Sent: Monday, 24 May, 2010 6:47:40 PM Subject: [zfs-discuss] Removing disks from a ZRAID config? We have a Sun thumper 34 terabyte, with 24T free. I've been asked to find out whether we can remove some disks from the zpool/ZRAID config (say about 10T) and install Veritas volumes on those, then migrate some data to it for block-level replication over a WAN. I know, horrifying - but the problem is there is no network/block-level replication inherent in (production Solaris) ZFS and we need it. I hate Veritas with a passion. But that's another discussion :-) Thanks... I dont know much about Veritas, but couldnt you install it on a zvol? -- iMx i...@streamvia.net ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Removing disks from a ZRAID config?
Can you elaborate? Veritas has it's own filesystem -- we need the block-level replication functionality to backup our data (live) over the WAN to a disaster recover location. Therefore, you wouldn't be able to use Veritas with ZFS filesystem. zfs create -V 10G test/testvol newfs /dev/zvol/rdsk/test/testvol Or format the zvol however you need to for veritas, the above would create ufs, the key being you pass it the device rather than mount the file system; this would in theory then allow you to snapshot, locally, the volume etc. Check out the below article: http://www.markround.com/archives/37-ZFS-as-a-volume-manager.html While browsing the ZFS man page recently, I made an interesting discovery: ZFS can export block devices from a zpool, which means you can separate ZFS the volume manager from ZFS the filesystem. This may well be old news to many; however I haven't seen many references to this on the web, so thought I'd post a quick blog update. -- iMx i...@streamvia.net www.slashdevslashnull.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Removing disks from a ZRAID config?
Thanks for the pointer, I will look into it. The first thing that comes to mind is a possible performance hit, somewhere with the VxFS code. I could be wrong, tho. No worries, certainly worth looking into though - if performance is acceptable, it could be a good solution. Let me know how it goes ;) -- iMx i...@streamvia.net www.slashdevslashnull.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
