gideva Posted May 14, 2021 Share Posted May 14, 2021 Hi Guys, got a disabled disk a couple of days ago and I dowloaded the diagnostic. Can you be so kind yo take a look at it? Thanks Quote Link to comment
itimpi Posted May 14, 2021 Share Posted May 14, 2021 If you want anyone to look at your diagnostics you will actually have to attach them to a post Quote Link to comment
gideva Posted May 14, 2021 Author Share Posted May 14, 2021 Ahahahahahaha.... Sorry! monstruo-diagnostics-20210511-0844.zip Quote Link to comment
JorgeB Posted May 14, 2021 Share Posted May 14, 2021 Do you have notifications enable? There were multiple disks with read errors: May 1 16:53:20 Monstruo kernel: md: disk4 read error, sector=6445062760 May 1 16:53:20 Monstruo kernel: md: disk4 read error, sector=6445062768 May 1 16:53:20 Monstruo kernel: md: disk4 read error, sector=6445062776 ... May 2 01:52:39 Monstruo kernel: md: disk15 read error, sector=588559224 May 2 01:52:39 Monstruo kernel: md: disk15 read error, sector=588559232 May 2 01:52:39 Monstruo kernel: md: disk15 read error, sector=588559240 and then disk9, disk4 and disk15 look more like a connection/power issue, replace cables but also run an extended SMART test on disk15 since it's showing some issues. As for disk9 it dropped offline, so there's no SMART, check/replace cables and post new diags. Quote Link to comment
gideva Posted May 14, 2021 Author Share Posted May 14, 2021 Ok I will check but I replaced all cables with high quality ones few months ago for the same issue so I am thinking that it might be related to something else? Quote Link to comment
JorgeB Posted May 14, 2021 Share Posted May 14, 2021 Most likely bad cables or bad power. Quote Link to comment
ChatNoir Posted May 14, 2021 Share Posted May 14, 2021 You should also look into this : 6 hours ago, JorgeB said: Do you have notifications enable? Seems that the errors happened over several days. The sooner you take action after errors, the better. Quote Link to comment
gideva Posted May 15, 2021 Author Share Posted May 15, 2021 17 hours ago, JorgeB said: Do you have notifications enable? There were multiple disks with read errors: May 1 16:53:20 Monstruo kernel: md: disk4 read error, sector=6445062760 May 1 16:53:20 Monstruo kernel: md: disk4 read error, sector=6445062768 May 1 16:53:20 Monstruo kernel: md: disk4 read error, sector=6445062776 ... May 2 01:52:39 Monstruo kernel: md: disk15 read error, sector=588559224 May 2 01:52:39 Monstruo kernel: md: disk15 read error, sector=588559232 May 2 01:52:39 Monstruo kernel: md: disk15 read error, sector=588559240 and then disk9, disk4 and disk15 look more like a connection/power issue, replace cables but also run an extended SMART test on disk15 since it's showing some issues. As for disk9 it dropped offline, so there's no SMART, check/replace cables and post new diags. Just to be super sure on what I have to do... I checked the cables and they all seems ok... Now what? Sorry for the stupid question but every time I make a mess :-(... Quote Link to comment
JorgeB Posted May 15, 2021 Share Posted May 15, 2021 Try replacing the cables or use a different PSU. Quote Link to comment
gideva Posted May 15, 2021 Author Share Posted May 15, 2021 I mean…. “As for disk9 it dropped offline, so there's no SMART, check/replace cables and post new diags.“ How should I proceed??? I checked the cables and all fine… now how I can put the drive back on?? Quote Link to comment
itimpi Posted May 15, 2021 Share Posted May 15, 2021 This is covered here in the online documentation that can be accessed via the Manual link at the bottom of the Unraid GUI. It is up to you whether you use the option to rebuild to a spare drive (safest) or the one to rebuild the disk to itself. Quote Link to comment
JorgeB Posted May 15, 2021 Share Posted May 15, 2021 1 hour ago, gideva said: How should I proceed??? When the drive is back online post new diags. Quote Link to comment
gideva Posted May 16, 2021 Author Share Posted May 16, 2021 Here it is... One more thing: is it advisable to add a second parity disk? Thanks monstruo-diagnostics-20210516-2041.zip Quote Link to comment
JorgeB Posted May 17, 2021 Share Posted May 17, 2021 SMART looks fine so likely also a power/connection issue. Quote Link to comment
itimpi Posted May 17, 2021 Share Posted May 17, 2021 22 hours ago, gideva said: One more thing: is it advisable to add a second parity disk? This is really a decision you have to make for yourself on a cost/benefit/risk basis. Adding a second parity protects against having 2 simultaneous dish failures, but if you have a good backup strategy you may decide the benefits do not outweigh the cost. It is always worth remembering that extra parity is about high availability and is not a guarantee against data loss so anything important should always be backed up elsewhere. Quote Link to comment
gideva Posted May 17, 2021 Author Share Posted May 17, 2021 56 minutes ago, itimpi said: This is really a decision you have to make for yourself on a cost/benefit/risk basis. Adding a second parity protects against having 2 simultaneous dish failures, but if you have a good backup strategy you may decide the benefits do not outweigh the cost. It is always worth remembering that extra parity is about high availability and is not a guarantee against data loss so anything important should always be backed up elsewhere. Crystal clear.... Thanks for your always valuable advices! Quote Link to comment
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