Re: raid6check extremely slow ?
From: Roy Sigurd Karlsbakk <hidden>
Date: 2020-05-14 19:51:21
what? Vennlig hilsen roy -- Roy Sigurd Karlsbakk (+47) 98013356 http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- Hið góða skaltu í stein höggva, hið illa í snjó rita. ----- Original Message -----
From: "Wolfgang Denk" <redacted> To: "Roy Sigurd Karlsbakk" <redacted> Cc: "Linux Raid" <redacted> Sent: Thursday, 14 May, 2020 20:20:41 Subject: Re: raid6check extremely slow ?
Dear Roy, In message [ref] you wrote:quoted
Try checking with iostat -x to see if one disk is performing worse than the other ones. This sometimes happens and can indicate a failure that the normal SMART/smartctl stuff can't identify. If you see a utilisation of one of the disks at 100%, that's the bastard. Under normal circumstances, you probably won't be able to return that, since it "works". There's a quick fix for that, though. Just unplug the disk, plug it into a power cable, let it spin up and then sharpy twist it 90 degees a few times, and it's all sorted out and you can return it ;)Everything looks unsuspicious to me - all disks behave the same: # iostat -x /dev/sd[efhijklm] 1 3 Linux 5.6.8-300.fc32.x86_64 (atlas.denx.de) 2020-05-14 _x86_64_ (8 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 0.19 0.00 1.06 0.15 0.00 98.60 Device r/s rkB/s rrqm/s %rrqm r_await rareq-sz w/s wkB/s wrqm/s %wrqm w_await wareq-sz d/s dkB/s drqm/s %drqm d_await dareq-sz f/s f_await aqu-sz %util sde 20.08 360.56 2.53 11.20 0.34 17.95 0.49 0.10 0.02 3.41 32.36 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.49 32.74 0.02 2.11 sdf 20.07 360.56 2.54 11.24 0.33 17.96 0.49 0.10 0.02 3.40 44.23 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.49 44.77 0.02 2.09 sdh 20.08 360.54 2.53 11.17 0.35 17.95 0.49 0.10 0.02 3.40 43.47 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.49 44.01 0.02 2.40 sdi 20.08 360.58 2.54 11.23 0.34 17.96 0.49 0.10 0.02 3.40 26.22 0.21 0.00 0.00 0.00 0.00 0.00 0.00 0.49 26.50 0.01 2.84 sdj 20.45 360.56 2.16 9.54 0.34 17.63 0.49 0.10 0.02 3.38 35.19 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.49 35.60 0.02 2.46 sdk 20.08 360.54 2.53 11.21 0.35 17.95 0.49 0.10 0.02 3.42 40.63 0.21 0.00 0.00 0.00 0.00 0.00 0.00 0.49 41.13 0.02 2.36 sdl 20.07 360.57 2.54 11.24 0.34 17.96 0.49 0.10 0.02 3.39 23.61 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.49 23.84 0.01 2.70 sdm 20.08 360.55 2.53 11.21 0.53 17.96 0.49 0.10 0.02 3.41 21.52 0.20 0.00 0.00 0.00 0.00 0.00 0.00 0.49 21.67 0.01 2.64 avg-cpu: %user %nice %system %iowait %steal %idle 0.38 0.00 1.12 0.12 0.00 98.38 Device r/s rkB/s rrqm/s %rrqm r_await rareq-sz w/s wkB/s wrqm/s %wrqm w_await wareq-sz d/s dkB/s drqm/s %drqm d_await dareq-sz f/s f_await aqu-sz %util sde 20.00 320.00 0.00 0.00 0.25 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 sdf 20.00 320.00 0.00 0.00 0.25 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 sdh 20.00 320.00 0.00 0.00 0.30 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 sdi 20.00 320.00 0.00 0.00 0.25 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.00 sdj 20.00 320.00 0.00 0.00 0.25 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 sdk 20.00 320.00 0.00 0.00 0.30 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 sdl 20.00 320.00 0.00 0.00 0.25 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.00 sdm 20.00 320.00 0.00 0.00 0.35 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.00 avg-cpu: %user %nice %system %iowait %steal %idle 0.25 0.00 0.88 0.00 0.00 98.87 Device r/s rkB/s rrqm/s %rrqm r_await rareq-sz w/s wkB/s wrqm/s %wrqm w_await wareq-sz d/s dkB/s drqm/s %drqm d_await dareq-sz f/s f_await aqu-sz %util sde 21.00 336.00 0.00 0.00 0.24 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.10 sdf 21.00 336.00 0.00 0.00 0.24 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.10 sdh 21.00 336.00 0.00 0.00 0.24 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.30 sdi 21.00 336.00 0.00 0.00 0.24 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.00 sdj 21.00 336.00 0.00 0.00 0.24 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.10 sdk 21.00 336.00 0.00 0.00 0.24 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.10 sdl 21.00 336.00 0.00 0.00 0.29 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 4.20 sdm 21.00 336.00 0.00 0.00 0.38 16.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.10 Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de We see things not as they are, but as we are. - H. M. Tomlinson