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zil

  1. S

    A bit about SSD perfomance and Optane SSDs, when you're planning your next SSD....

    NOTE: I'll be referring in this page, to a type of SSD developed by Intel and Micron, called 3D X-Point (pronounced "crosspoint"). It's most widely sold as Intel's Optane. The Optane devices I mean are things like the 900p, 905p, and P48xx. First generation optane and some smaller ones aren't...
  2. Exhorder

    Redundant SLOG device?

    Hi, I've got a question about SLOG. I'm not sure if it has to be redundant. What I've read so far says, that it does not need to be redundant because if device fails, the ZIL just goes to the pool where it would be without SLOG anyways. OK, but I never had a completely failing SSD so far. If I...
  3. 1

    zil never gets any action

    I've tried everything I can think of including synthetic benchmarks but the zil never gets used (not even a little). This is the case even when transferring files form a SSD to a local pool. Sync options haven't appeared to do anything. What else could I be missing? I'm new to ZFS and don't use...
  4. Evan Richardson

    Is Zilstat still broken or not?

    It seems that zilstat is still broken root@mediastore:~ # zilstat dtrace: invalid probe specifier #pragma D option quiet inline int OPT_time = 0; inline int OPT_txg = 0; inline int OPT_pool = 0; inline int OPT_mega = 0; inline int INTERVAL = 1; inline int LINES = -1; inline int COUNTER =...
  5. S

    Commands to correctly clear/reset a used SSD and create an aligned partition for overprovisioned ZIL

    I googled this but I don't have the experience and certainty so I thought it's worth asking here. I have a decent SSD (Intel P3700 NVMe) that I plan to redeploy as a ZIL. It's a lot bigger than the ZIL needs to be, and web pages make clear that many SSDs can gain phenomenal performance if they...
  6. averyfreeman

    x4 PCIe to NVMe adapter with supercapacitor

    Hey, I just saw these on ebay and thought people on this forum might find them interesting: https://www.ebay.com/itm/Adapter-Card-to-PCI-E-x4-Power-off-protection-half-Height-Bracket-for-SM951-SSD/222039068163?hash=item33b28f4e03:g:wIIAAOSwWTRW1WI5 Looks like a pretty hefty capacitor for...
  7. D

    Mirror & stripe 2 disks at the same time?

    Hey I'm going over this guis blog https://pthree.org/2012/12/07/zfs-administration-part-iv-the-adjustable-replacement-cache/ Pretty great read and I was wondering, at the end of this post he shows that he has a 2 OCZ ssds in both mirror and stripe? - or do I read it incorrectly? pool...
  8. E

    zfs receive and SLOG

    Two questions - 1) Does 'zfs receive' utilize the ZIL and therefor a SLOG if you have one? 2) I have several 16 drive (3.5") chassis that I've inherited that I'll be using for backups for VM hosts. I'll be using zfs send/rec to get the data there. Would I be better off having two 8 drive...
  9. M

    Write Speed issues

    Hi all, I've been wandering on the forum for some hours and read a lot of posts regarding write speed, but was not able to find something to point me in the right direction. First my build: HP ML110 G9 Build FreeNAS-11.0-U1 (aa82cc58d) Platform Intel(R) Xeon(R) CPU E5-2603 v4 @ 1.70GHz Memory...
  10. R

    Konfiguration meines Pools für VDI

    Hallo Zusammen, ich beschäftige mich in Form eines Projekts mit Storage für eine kleine VDI. Mein Pool beinhaltet 8x 1TB HDDs und bis zu 6 SSDs. Ich habe meinen Pool so konfiguriert dass ich 4 512Gb EVO SSDs als L2Arc nehme und 2 512GB EVO SSDs als ZIL. Mag vielleicht erstmal oversized sein...
  11. N

    Proposed Build - First time FreeNAS

    Hi Guys - Long time lurker, first time poster. Anyways looking to upgrade my NAS setup and figured I would go with ZFS and FreeNAS. Been using a Synology 1812+ for the past 5 years. Hardware RAID5/6 on Areca Controller and CentOS before that. This time I want to go with ZFS for its increased...
  12. X

    ZIL und L2ARC für meine Konfigutration sinnvoll?

    Hallo! Ich experimentiere gerade mit FreeNAS und will es demnächst als Produktivsystem (privat) einsetzen. Folgende Konstellation ist geplant: MB: Supermicro X11SSL CPU: Xeon E3-1240v6 RAM: 16GB ECC-RAM (wird erweitert auf 32GB) System: ESXi 6.5 auf USB-Stick Fespl.: 7x WD Red 3TB für Daten...
  13. S

    Using a large fast SSD to best advantage?

    Short simple version: I'm setting up my FreeNAS build to handle general file serving and as a ESXi VM store. I got very lucky with the ZIL, which got upgraded to a top-end Intel P3700 datacenter SSD via RMA, and now I don't know how to make best use of that device. My hardware...
  14. T

    Need sanity check on reconfiguring ZIL

    Right now "zpool status" is griping about non-native block size for the logs device. Here's the bit that matters: logs mirror-5 ONLINE 0 0 0 gpt/log0 ONLINE 0 0 0 block size: 512B configured, 4096B native gpt/log1 ONLINE 0 0 0 block size: 512B configured, 4096B native As...
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