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    ZFS Memory leak

    Can you post the output of top ordered for memory use and also the ARC section from zfs-stats?
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    ZFS: Possible to replicate missing snapshot?

    zfs receive -F I think will do it...
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    ZFS and no ZIL / LOG reported usage

    Might be worth double checking this via gstat.
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    [HAST] Preventing split-brain on simultaneous node failures

    Hi, I think if you know of or have experience of enterprice clustering solutions like Veritas Cluster then by comparison HAST and CARP are never going to provide you with a solution of a similar level of robustness and funcionality. I don't think there is any concept of quorum and certainly...
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    How do people install FreeBSD on mirrored drives? Before or after installation?

    Hi, its really easy to use gmirror after a normal install to a single drive. http://www.freebsd.org/doc/handbook/geom-mirror.html (section 20.4.3) Thanks, Andy.
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    How do I install a commercial driver?

    It's the SAS Expander: http://en.wikipedia.org/wiki/Serial_attached_SCSI#SAS_expanders
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    Mitigating 4k disk issues on RAIDZ

    Hi, was just checking out this page and video, can anyone make out or guess what the guy is saying about record sizes and mitigating issues on FreeBSD with ZFS when using 4k disks? Its at 19.50 in the video. They are talking before hand about that you may recieve a space penalty when using...
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    LSI SAS HBAs with IT firmware

    Thanks Gkontos :) That should suit me if I its still available, its not listed here: http://www.lsi.com/products/storagecomponents/Pages/6GBSATA_SASRAIDCards.aspx Unless Im looking in the wrong place seems like its an old model. Ill check with my reseller and see if they can supply me with...
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    LSI SAS HBAs with IT firmware

    Hi, can anyone point me in the direction of such a card that has IT firmware available? I'm looking for a solid HBA with 8 or 16 internal connections (to use with ZFS). I'm just looking through their current cards and none of the 8i cards have an IT firmware listed in the download section...
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    raidz performance tuning question

    Hi, see this guide, particularly anything that mentions improvements to "bursty" stalls: http://wiki.freebsd.org/ZFSTuningGuide Basically you'll need to test some different values and see which gives the most consistent performance under the loads you are testing with... thanks, Andy.
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    Which is your Favourite Linux?

    Have been using Ubuntu as a server OS recently and was pleased to find it offers freebsd-update-like upgrades between major versions, which AFAIK the likes of CentOS etc do not, which was nice :) I also find apt-get pretty ok, prefereable to RPMs and yum for me. cheers Andy.
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    Share resources between 2 hosts

    The idea would be to export the zpool on the first host, then configure each physical disk under istgt, then on the second disk connect to all the physical disks with iSCSI initiator. At that point all the physical disks should appear as locally attached disks on the second server, then you can...
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    KVM virtual server FreeBSD guest packet loss

    Hi, We seem to have solved this, or at least realised that the issue is specific to an OS build and doesn't affect other FreeBSD servers. Basically we had four servers all cloned from the same virtual server, all of these are affected by the packet loss issue I described. Additionally our...
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    Share resources between 2 hosts

    Hi, You've not really said what your requirements are, 3GB of RAM is enough to export the pool as NFS or configure iSCSI. If the concern is over performance, then of course you will be negatively impacted by not having the pool locally conneted to the second server. The only semi-wacky thing...
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    KVM virtual server FreeBSD guest packet loss

    Hi, Does anyone have any experience using FreeBSD as a guest on KVM (I'm running it on Debian 12.04)? In all aspects it seems to be working fine, except I'm having an issue where I get packet loss to the server when doing a ping. I'm talking a small percentage here, TCP services seem totally...
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    NFS write performance with mirrored ZIL

    Well when there's no power, it isn't flushed and the ZFS write transaction isn't complete, end of story. ZFS is still in a consistent state but doesn't have any transactions relating to the last flush that didn't happen. Same idea as a database. As you said, battery backup is a must for RAM...
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    NFS write performance with mirrored ZIL

    Hi, regarding trying to cause a ZFS data error by resetting the ZFS server or attached storage. You shouldn't need a battery backed disk so long as the disks do not ignore cache flush commands sent from ZFS. Do you have any reason to believe that the Vertex won't do cache flushes when...
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    TACACS+ configuration

    Hi, FreeBSD uses a different passwd file format than Linux so it's quite possible TACACS+ just hasn't been coded to work with the FreeBSD passwd file. We use TACACS+ with users and passwords defined in the TACACS+ config file. ta Andy.
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    FreeBSD ZFS as a NAS/server?

    Hi, As no one seems to be able to vouch for driver compatibility with your hardware, apart from obviously just testing it which you can't do without a spare Sun server you should check the network interface cards and disk controllers against the FreeBSD hardware compatibility list. I don't...
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    NFS write performance with mirrored ZIL

    I haven't tried it, but I'd guess it will be mountable to non-VMware systems. As I said an iSCSI volume is treated as a local disk, VMware state this is the case on VMware too so if fuse etc can mount normal VMware devices it should work with an iSCSI devices too. But unless anyone else can...
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