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/proc/sys/dev/raid/speed_limit_max resetting...
I followed the guide here: https://www.cyberciti.biz/tips/linux-raid-increase-resync-rebuild-speed.html To increase speed, enter: echo value > /proc/sys/dev/raid/speed_limit_min OR sysctl -w dev...
I am also experiencing this issue. Slow rebuild / resync requires adjustments to the
/proc/sys/dev/raid/speed_limit_max and
/proc/sys/dev/raid/speed_limit_min values as well as others..
Why does the value keep getting reset, and by what??
Check your `dmesg` ... I had a bunch of SCSI messages for /dev/sde.. as soon as i removed that from all the raids via mdadm my speeds went back to what they should be and have not reset. Also fixed an issue I was having w/ the NAS freezing up on me.
Bad drive reported good by the NAS :(
[15672.997577] scsi target0:0:4: handle(0x000d), sas_address(0x4433221103000000), phy(3)
[15672.997580] scsi target0:0:4: enclosure_logical_id(0x4494fc6f00e40108), slot(3)
[15673.111621] sd 0:0:4:0: task abort: SUCCESS scmd(ffff8800d1225b00)
[15768.999287] sd 0:0:4:0: attempting task abort! scmd(ffff8801ec53e480)
[15768.999296] sd 0:0:4:0: [sde] tag#0 CDB: ATA command pass through(16) 85 06 20 00 00 00 00 00 00 00 00 00 00 00 e5 00
[15768.999299] scsi target0:0:4: handle(0x000d), sas_address(0x4433221103000000), phy(3)
[15768.999302] scsi target0:0:4: enclosure_logical_id(0x4494fc6f00e40108), slot(3)
[15769.401167] sd 0:0:4:0: task abort: SUCCESS scmd(ffff8801ec53e480)
[15808.003982] sd 0:0:4:0: attempting task abort! scmd(ffff8801eace9c80)
[15808.003991] sd 0:0:4:0: [sde] tag#18 CDB: ATA command pass through(16) 85 08 0e 00 d0 00 01 00 00 00 4f 00 c2 00 b0 00
[15808.003995] scsi target0:0:4: handle(0x000d), sas_address(0x4433221103000000), phy(3)
[15808.003997] scsi target0:0:4: enclosure_logical_id(0x4494fc6f00e40108), slot(3)
As soon as I started the readynasd.service back up, it reset all my mdadm changes. I had to
echo 1 > /sys/block/sde/device/delete
So the device isn't reinsterted automatically (basically powers down the drive)
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