I'm curious if I can do anything to increase my performance, especially during parity checks.
Ryzen 2600, 48GB of RAM running 6.9.0-beta35
All drives are 10TB Iron Wolfs, except one of the dual parity drives which is a Western Digital (WD101KFBX-68R56N0). I'm running 1.5TB of RAID1 SSD cache. Everything is running BTRFS. I'm using reconstruct write, and I don't power down any of my drives. I was never able to get that to work properly, but I'm not opposed to it.
SAS9211-8I 8PORT Int 6GB Sata+SAS Pcie 2.0 (flashed to IT mode, shows up as Serial Attached SCSI controller: Broadcom / LSI SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03)) (Running 2118it)
HP 468405-002 PCIE SAS EXPANDER CARD 468405-001 487738-001 (HP SAS EXP Card 2.10 -)
[0:0:0:0] disk SanDisk' Cruzer Fit 1.00 /dev/sda 31.4GB
[9:0:0:0] disk ATA ST10000VN0004-1Z SC60 /dev/sdb 10.0TB
[9:0:1:0] disk ATA Samsung SSD 860 2B6Q /dev/sdc 1.00TB
[9:0:2:0] disk ATA WDC WDS500G2B0A 90WD /dev/sdd 500GB
[9:0:3:0] disk ATA Samsung SSD 860 2B6Q /dev/sde 1.00TB
[9:0:4:0] disk ATA SanDisk SDSSDH35 70RL /dev/sdf 500GB
[9:0:5:0] disk ATA ST10000VN0004-1Z SC60 /dev/sdg 10.0TB
[9:0:6:0] disk ATA ST10000VN0004-1Z SC60 /dev/sdh 10.0TB
[9:0:7:0] disk ATA ST10000VN0008-2J SC60 /dev/sdi 10.0TB
[9:0:8:0] disk ATA ST10000VN0004-1Z SC60 /dev/sdj 10.0TB
[9:0:9:0] disk ATA ST10000VN0008-2J SC60 /dev/sdk 10.0TB
[9:0:10:0] disk ATA WDC WD101KFBX-68 0A03 /dev/sdl 10.0TB
I was running a BUNCH of maintenance scripts, but someone told me that was a waste. I'm not sure what type of maintenance I need of my drives.
I was running balances (weekly I believe). I'm not doing any balance on my data drives, I was told it wasn't required.
/usr/bin/ionice --class idle /usr/bin/nice --adjustment=19 /sbin/btrfs balance start -musage=50 /mnt/disk1 > /dev/shm/disk1.balance.output
/usr/bin/ionice --class idle /usr/bin/nice --adjustment=19 /sbin/btrfs balance start -dusage=90 /mnt/disk1 >> /dev/shm/disk1.balance.output
Scrubs are running twice a month, 15 days apart...one drive a time.
/usr/bin/ionice --class idle /usr/bin/nice --adjustment=19 /sbin/btrfs scrub start -Bd -c 2 -n 5 /mnt/disk4 > /dev/shm/disk4.scrub.output
Cache maintenance looks like this, daily.
/usr/bin/ionice /usr/bin/nice /sbin/btrfs scrub start -Bd -c idle /mnt/cache > /dev/shm/cache.scrub.output
I'm also running daily smart checks at 9am.
for i in {b..o}; do
smartctl --test=short /dev/sd$i
done
If my controller/expander are my bottleneck, what is the current suggested setup?