April 14, 20197 yr Hey all. I have an HP ML350p Gen 8 running Unraid 6.6.7. One thing I haven't gotten around to in the couple of months this system has been around is setting up parity. Right now, it's estimating 10 days for the initial parity sync at 4.5 MB/s. Read checks have passed at 97 MB/s in the past. I'm just trying to figure out why parity is grinding to a halt while everything else is performing flawlessly. Diagnostics attached. defiant-tower-diagnostics-20190413-1959.zip Edited April 14, 20197 yr by geraldbrent1
April 14, 20197 yr Community Expert Write cache for parity disk is disabled, you can turn on with: hdparm -W1 /dev/sdX Might go back to default after a reboot.
April 14, 20197 yr Author 12 minutes ago, johnnie.black said: Write cache for parity disk is disabled, you can turn on with: hdparm -W1 /dev/sdX Might go back to default after a reboot. That single command bumped it up to 70MB/s. Much thanks. Any way to make it persist through a reboot?
April 14, 20197 yr Community Expert Not sure it will, check after rebooting, if it doesn't you can use a script to enable it.
April 14, 20197 yr Author 31 minutes ago, johnnie.black said: Not sure it will, check after rebooting, if it doesn't you can use a script to enable it. Next time I can, I will for sure. Went ahead and added it to a user script. Can't hurt it if the variable is already checked. This is why I love this community. Thanks!
April 14, 20197 yr Community Expert 9 minutes ago, geraldbrent1 said: Went ahead and added it to a user script. Just keep in mind that sdX can change if there is a hardware change, though no harm done in that case, alternatively you can have the script enable if for all disks, it won't make a difference for those where it's already enable.
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