March 18, 20206 yr Had a power outage last week and everyday my server crashes and my shares disappear Mar 18 03:40:01 Tower kernel: shfs[3677]: segfault at 0 ip 0000000000403bd6 sp 00001511c7ea5930 error 4 in shfs[403000+c000] i get this error when my shares disappear, unraid is updated to latest version system info: Model: Custom M/B: MSI Z170A PC MATE (MS-7971) Version 2.0 - s/n: GA16148359 BIOS: American Megatrends Inc. Version A.A0. Dated: 07/27/2016 CPU: Intel® Core™ i5-6500 CPU @ 3.20GHz HVM: Enabled IOMMU: Enabled Cache: 128 KiB, 128 KiB, 1024 KiB, 6144 KiB Memory: 16 GiB DDR4 (max. installable capacity 64 GiB) Network: bond0: fault-tolerance (active-backup), mtu 1500 eth0: 1000 Mbps, full duplex, mtu 1500 Kernel: Linux 4.19.107-Unraid x86_64 OpenSSL: 1.1.1d
March 18, 20206 yr Go to Tools - Diagnostics and attach the complete diagnostics zip file to your NEXT post. Also, setup Syslog Server so you can save your syslog for retrieval after reboot: https://forums.unraid.net/topic/46802-faq-for-unraid-v6/?do=findComment&comment=781601
March 19, 20206 yr Your cache drive is unmountable. Here is the FAQ for that: https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#comment-543490 You might wait for further instructions from @johnnie.black but it will probably be a few hours before he sees this.
March 19, 20206 yr No valid filesystem is being detected on cache, like it was never formatted, that or it was wiped.
March 19, 20206 yr Author 39 minutes ago, johnnie.black said: No valid filesystem is being detected on cache, like it was never formatted, that or it was wiped. that would cause crashes? it was formatted when i first set the machine up
March 19, 20206 yr 1 hour ago, ljflowers90 said: that would cause crashes? Just being unmountable won't cause crashes.
March 19, 20206 yr 3 hours ago, johnnie.black said: Just being unmountable won't cause crashes. No but it might make your user shares disappear since cache is part of the user shares. In your diagnostics, I see that /mnt/user0 is mounted, but /mnt/user isn't.
March 19, 20206 yr 51 minutes ago, trurl said: No but it might make your user shares disappear since cache is part of the user shares. In your diagnostics, I see that /mnt/user0 is mounted, but /mnt/user isn't. Since the cache never mounted it should have no direct relation to that, I did notice this segfault in the end of the syslog: Mar 18 03:40:01 Tower kernel: shfs[3677]: segfault at 0 ip 0000000000403bd6 sp 00001511c7ea5930 error 4 in shfs[403000+c000] Mar 18 03:40:01 Tower kernel: Code: 89 7d f8 48 89 75 f0 eb 1d 48 8b 55 f0 48 8d 42 01 48 89 45 f0 48 8b 45 f8 48 8d 48 01 48 89 4d f8 0f b6 12 88 10 48 8b 45 f0 <0f> b6 00 84 c0 74 0b 48 8b 45 f0 0f b6 00 3c 2f 75 cd 48 8b 45 f8 This was most likely what cause /mnt/user to go away, but no idea what caused the segfault itself, could be hardware issue or some plugin, if it keeps happening good to run memtest and/or boot in safe mode.
March 19, 20206 yr Author 2 hours ago, johnnie.black said: Since the cache never mounted it should have no direct relation to that, I did notice this segfault in the end of the syslog: Mar 18 03:40:01 Tower kernel: shfs[3677]: segfault at 0 ip 0000000000403bd6 sp 00001511c7ea5930 error 4 in shfs[403000+c000] Mar 18 03:40:01 Tower kernel: Code: 89 7d f8 48 89 75 f0 eb 1d 48 8b 55 f0 48 8d 42 01 48 89 45 f0 48 8b 45 f8 48 8d 48 01 48 89 4d f8 0f b6 12 88 10 48 8b 45 f0 <0f> b6 00 84 c0 74 0b 48 8b 45 f0 0f b6 00 3c 2f 75 cd 48 8b 45 f8 This was most likely what cause /mnt/user to go away, but no idea what caused the segfault itself, could be hardware issue or some plugin, if it keeps happening good to run memtest and/or boot in safe mode. I ended up formatting the cache drive and it’s been up 14 hours no crash, thanks to both of you for all the help 😁 Edited March 19, 20206 yr by ljflowers90
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