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  • Which RAID or HBA card

    Sc0rp - - My NAS Build

    Post

    Re, awwww, come on, @tkaiser ... it is a bond of two 1GbE-interfaces - what else? Sc0rp

  • Re, Bridging is not bonding ... and of course you can bond unequal links (bonding has several modes). But the routing issue remains - so my first conclusion to alter the KRT is nessecary in every way, but in different ways according to your preferred solution. But with bridging you probably get the DNS-Problem fixed (one hostname with two ip-addresses) ... needs special routing too. Btw: I had the same questions, as i got the chance to overlay my network with dual-10GBE-nics and DAC's ... since …

  • Re, since you use the drives as "bare" block-devices with no underlaying array-functions, it makes no sense to me to move any of the drives from onboard controller to the new HBA. Don't touch the running system, just add the HBA and connect the new drives to the HBA-ports. Format them, and then bind them to which pool you want, it is absolutely no problem to have mergerfs/SnapRAID-pools across different controller-chips ... Adding new drives with SnapRAID/mergerfs is just simpel - add them in th…

  • Re, Quote from darkarn: “I ping using ip addresses as if I ping using hostnames, the Gigabit NIC of the machines will get the ping instead of the 10 Gbe NICs ” Yeah, that's correct. DNS is working Did you tried the brigde-solution? May be it is better in your environment, but i don't know how it works on asymmetric links ... It is not easy with overlayed networks at all, and i'm not a pro in point-to-point networks ... Sc0rp

  • RAID 6 Array (6x8TB) device Disappeared

    Sc0rp - - RAID

    Post

    Re, Quote from tkaiser: “Is it possible that the Adaptec changed disk geometry (possibly hiding sectors from the beginning of the disk since used 'internally')? ” Yeah. HW-RAID-Controllers normally working on pure LBA, which makes easy to "hide" sectors (beginning and/or end, and for multiple partition layouts in between too) Quote from tkaiser: “Just asking since I'm currently fighting against a stupid USB-to-SATA bridge which does the same but from the disk's end (so it doesn't hurt that much,…

  • Re, Quote from darkarn: “Before setting each link as their own subnet instead of all under one subnet, Windows-PC can ping both NAS1 and NAS2, but NAS1 and NAS2 can't ping to any machine ” That sounds really weired. But in your construction i would prefer using one (sub-) net for the 10G-cards. In this case it can be nessecary anyway to tweak the KRT, since i dunno, how the kernel derives the routinginfo from networkinfo in detail. (I would do "try and error"). In the setup with subnets on each …

  • Re, it's routing, so consult at first: route -n on your Linux boxes - then you'll see ... but it should only work to the "next hop" adresses. I assume you have the construct NAS1 <-DAC-> Windows-PC <-DAC-> NAS2 - so you can not ping from NAS1 to NAS2, right? Sc0rp

  • RAID 6 Array (6x8TB) device Disappeared

    Sc0rp - - RAID

    Post

    Re, may be you ran into some very special problems regarding DCB's. Once you used the Adaptec-Card, it has surely written it's DCB (even it was JBOD) on all disks ... normally first 4k on each disk. Then you made the Superblock (so called DCB by mdadm) on top - and after that magic failing upgrade you change the controllercard ... i assume mdadm cannot find his superblock anymore, and it seems that Linux can not find any partition (related) info too. So i'll go with @tkaiser: in your case it see…

  • Raid 5 gone after reboot

    Sc0rp - - RAID

    Post

    Re, Quote from Drake008: “Is there a way to scan for HDD errors whilst creating the Raid? ” More than one i assume ... - smartctl should be running deamonized (ps -ef | grep smart to check) - smartctl -a /dev/sda (alter "a" for b,c,d,e,...) if you have a suspect (output is very long) - tail -f /var/log/messages (on a second console) - may be you configure email reporting on your box too - it's working for me (and it's fast) While building (rebuilding, syncing, resyncing) an array, mdadm takes ca…

  • Omv: two interfaces as gateway.

    Sc0rp - - Network

    Post

    Re, i'll not make a complete documentation over network security at all - sry, no time for that ;). Just take my complains and check what is more important for you: simpliness or security. - Best construct for security is a dedicated Dual-NIC in a vm-environment (kvm preferred). - The easiest way for your issue, is to split the NIC into logical units - making at least an eth0.1 device, which transports the traffic upstream. Then you have only to NAT (or technically correct PAT) your office lan v…

  • Raid 5 gone after reboot

    Sc0rp - - RAID

    Post

    Re, Since the log was after reboot, i find only these lines: syslog/messages: Sep 19 10:41:02 NAS kernel: [ 4.553638] md: kicking non-fresh sdc from array! *1) Sep 19 10:41:02 NAS kernel: [ 4.553660] md: unbind<sdc> ... in these logs is no issue, which points at the drive failures ... And the line from your commands after reboot talks the same: mdadm: forcing event count in /dev/sdc(2) from 46700 upto 46712 *1) *1) every member of an array gots an (individual) eventcounter - if this counter is o…

  • Which Sata Card?

    Sc0rp - - My NAS Build

    Post

    Re, i assume, that @tkaiser is to much "pro" - I wouldn't recommend ZFS for normal use at all. Basically you have to learn, how ZFS is organized and what you have tot do, to extend your box with additional drives - the layout of ZFS is often missunderstood, which leads to the most user-complains about "how i can add a drive to my ZFS" (it is not trivial). BTRFS is new, and the RAID-Code is not "production ready" - I waiting for that. I'm using RAID since about 20 years and i'm a little bit "scar…

  • Re, so you have to alter the KRT (kernel routing table) if not done already, or use "host routes" (will be derived from hosts-file). And maybe you have to add a forwarding-rule in iptabels too ... Sc0rp

  • Which hard drive?

    Sc0rp - - My NAS Build

    Post

    Re, Quote from ryecoaaron: “What? They are using them for storage and it shows drive quality and longevity under harsher conditions. ” But read it very carefully, the "worst" drive in the report is a "ST4000DM001" ... which is suggested as a pure desktop consumer product ... yeah, of course it fails more often in BlakeBlaze's environment ... look at the specs of the ST6000DX000 and the ST4000DX000 too ... Anyway, you have to take into account the complete statistics: drive days and the overall c…

  • Which Sata Card?

    Sc0rp - - My NAS Build

    Post

    Hi, i'm not sure about the RAID Lvl10 construct ... it has probably less cpu utilization than RAID6, but with the disadvantage of adding pairs of drives instead of only one in case of RAID6. The overall speed remains the same, same to the redundancy. Anyway, i use the IOcrest Controllers too, look at the thread Which RAID or HBA card ... there you'll find all necessary informations and links (even to Amazon - look at the warehouse deals in Sweden). Sc0rp

  • Hi, did you made additions to the hosts-file on your boxes? Sc0rp

  • Omv: two interfaces as gateway.

    Sc0rp - - Network

    Post

    Hi, yes, that's possible ... search for "linux iptables nat" in your preferred engine. (e.g. revsys.com/writings/quicktips/nat.html) But keep in mind, that you have to install a dns-proxy as well, and a dhcp-server too ... and the concept is not secure at all, better use a dual-nic in an vm-environment for routing (and firewalling). Sc0rp

  • Raid 5 gone after reboot

    Sc0rp - - RAID

    Post

    Hi, it seems your RAID did'nt suffer from multiple failures: md127 : inactive sdb[1] sda[4](S) sdd[3] <- (S) indicates a spare drive, while sdc is completly missing ... So it seems to me, that sda has lost some DCB informations and sdc is not reliable enough for RAID ... Anyway, you forced the drives to work in a RAID - and so you got two issues: - the RAID will now try to recover itself (gain a sync-status at all), starting immediately recovering/resyncing - blocks (data) with wrong CRC's will …

  • Which RAID or HBA card

    Sc0rp - - My NAS Build

    Post

    Re, If Portmultiplying is important (or even intresting) for you, don't buy a "consumer HBA" - instead - buy a (professional) Port-Multiplying system or the consumer variant an use it in conjunction with your onboard SATA-ports (this kind of controllers don't use PCIe-lsots at all!) Sc0rp EDIT/ps: but don't cry about the performance then

  • Which RAID or HBA card

    Sc0rp - - My NAS Build

    Post

    Re, Quote from drdownload: “@Sc0rp: I also have exactly this card in my cart, ” Yeah, but be aware of the port multiplier thing in this build - it seems, that the Marvell 88SE9215 generates 3 SATA-ports. while the Marvel 88SM9705 multiplies one port of the Marvell 88SE9215 to the other five SATA-ports ... Sc0rp