benok

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benok last won the day on April 4 2019

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About benok

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  1. I've just been in trouble with crashed btrfs volume, too. Also can't mount the volume & storage manager shows crashed volume "0 bytes / 0 bytes". I found a page about btrfs recovery below, and followed those steps described. https://lists.opensuse.org/opensuse/2017-02/msg00930.html In my case also, "btrfs restore"(Step 8 ) seems to solve the problem. I try to restore 2.5TB volume(used over 2TB), but only I can restore is about 500GB. I followed steps further, on Step11, I could recover almost all chunks (failed only 1 chunk), but chunk tree
  2. I'm sorry, not to reply. I can not use Proxmox or KVM virutalization on my VPS. That's why I post this question. I think it's not bad idea. If it can be implemented, I think it may solve the problem for DSM6.x on Hyper-V...
  3. If you want to accelerate copying/moving files via SMB, You can try SMB multi channel, by editing smb.conf manually. I don't have experience, but some Synology users got doubled or 4 times transfer speed, gathering 2,4 links with this. SMB multi channel working in 6.1 release - Synology Forum https://forum.synology.com/enu/viewtopic.php?t=128482 SMB 3 Multichannel support on DSM 6.2? : synology SMB Multichannel: How It Works & Troubleshooting Guide | Level One Techs https://level1techs.com/video/smb-multichannel-how-it-works-trou
  4. Hi, Thank you for posting this very very useful matrix. I noticed that working NIC for esxi is not e1000, but e1000e for me. Could you confirm ? (kernel panic log from serial console)
  5. benok

    DSM 6.2 Loader

    Do we need to add "disconnect all display cables from video cards" to the check list ? I've read that on above post, but recently no one wrote about display cable. Is that still required to work transcoding ? I didn't have experience those because I don't have 918p enabled hardware, but I guess some of you might miss display cable disconnection.
  6. benok

    DSM 6.2 Loader

    @Tattoofreak, did you confirm CPU options of your DSM VM on ESXi ? I think you have to set options below if you didn't yet. Enable "Expose hardware assisted virtualization to the guest OS" Choose "CPU/MMU Virtualization" to "Hardware CPU and MMU"(or try another) It's necessary to enable those to work nested virtualization, generally. # But I'm not confident because VDSM error message didn't point out virtualization capability. # So, I think you did those already...
  7. Ah really, so that screenshot says it's "Cache Device". I didn't notice such limitation exists in NVMe on DS918. If NVMe is brought to higher models like DS3619(?), they would remove such a limit. I have no experience of cache corruption, using SSD cache several years, but it's heavy access wares SSD more, and SSD cache doesn't accelerate sequential read/write. Umm, I was attracted huge datastore & good random access performance for < ~10 VMs online. I agree that is not efficient resource usage. (But it's not so bad job for old SATA SSD.)
  8. Hi, again. (Your post is very interesting for me. I think I should follow you. ) Have you ever tried NVMe passthrough with 918+ VM ? As you know, some 918+ baremetal users successfully setup NVMe as a SSD cache. I wanted to know is it possible to work 918+VM with NVMe pass through like other OS's VM. I think pRDM is a bit more cumbersome than passthrough because of vmdk setup. (But I appreciate your sharing experience about those pRDM. ) p.s. My configuration is something like below. I've read btrfs performance is very bad
  9. benok

    DSM 6.2 Loader

    You can use serial console. EliteDesk has a serial port. Buy a USB serial cable and connect HP and another PC with that. You can see some boot log and can use serial console using some serial terminal app like Putty. I guess, if you disable serial port on BIOS, that might stop booting. I've once experienced that on a VM without serial port.
  10. Wow, thank you for sharing all of this. I don't have enough time to try this, but I want to someday soon. It's quite interesting and useful. I think it's better to post this contents to another thread to notice at least DVR users. Currently, I feel I have to check every contents in this forum, because of the improper or inaccurate thread title.
  11. Very interesting. NanoPi Neo behaves something like virtual USB (network) mass storage. right ? I think it's awesome idea. What device you connect this to ? Personally, I don't have any good usage for this now, but someone using DVR function of TV or gamer using PS4, XBox, etc. may be interested in this. Could you share more detail on somewhere ?
  12. SHR has several drawbacks on upgrade, if you want to use SHR, I recommend you to read this article carefully. Don't Roll Into Trouble When Expanding NAS Storage - SmallNetBuilder https://www.smallnetbuilder.com/nas/nas-features/32649-don-t-roll-into-trouble-when-expanding-nas-storage I stopped using SHR after I read this.
  13. I've read that boot loader of DSM6.x is required to be stored on read-write file system. Is it possible to make ISO bootable boot loader using cloop, tmpfs, overlay-fs as Live CD does ? (-> Building Your Own Live CD | Linux Journal ) If it's possible, we can run DSM6 on VPS hosting server. On VPS hosting environment, we can't easily add virtual disk. (I think if we want to run DSM6, we have to use qemu.) Is there any information required to persist on "boot loader partition" on installation process ? # Even so, we can replace iso imag
  14. I don't know how to support that, but I think it's hard to analyze & fix DSM & keep update and so on, and I think it have very little merit. I don't recommend to use RDM for XPEnology. I think RDM's merit is only for Vt-d unsupported CPU system can get some information from disk. It's not useful to configure & uneasy to replace disk, etc. You can't replace disk on crash, before you write rdm config for the new disk. I only used RDM on very old system which doesn't support Vt-d. I recommend to use pass-through SATA I/O chip (onboard / PC
  15. I don't know such limitation exists. Is there before 5.2 ? I used 240gb x2 SSD for read/write cache for 3TBx4 RAID5 for around 2 years ? since DSM5.2. Last year I upgraded to another system with 1TB x2 cache and it also works fine. I think you should check the recent document again. It almost only says about the memory requirements. https://www.synology.com/en-us/knowledgebase/DSM/help/DSM/StorageManager/genericssdcache DSM caches frequently used random access area automatically within the cache size. (I also recommend not to enable sequential cache