I recently added a few new drives to my unraid server and upgraded unraid from 4.7 to 5.0rc3/5. The problem is that before upgrading I could write to the server ~25 MB/s and read ~50 MB/s and now after upgrading the drives and unraid I write ~7 MB/s and read ~20 MB/s. I tried writing to two different drives and the speed was the same. Any idea what is going on?

We don't know until you provide us with additional information. Please post a full syslog and also detail exactly what your hardware is, including cpu, motherboard, ram, and hard drives.

Sure I have attached the syslog.

 

Here are my system specs:

 

Motherboard: ASRock 880GM-LE AM3 AMD 880G Micro ATX AMD Motherboard

CPU: AMD Athlon II X2 250 Regor 3.0GHz Socket AM3 65W Dual-Core Desktop Processor ADX250OCGMBOX

RAM: Kingston ValueRAM 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model KVR1333D3N9K2/4G

PSU: PC Power and Cooling Silencer Mk II 500W High Performance SLI CrossFire ready Power Supply

Operating System: Unraid 5.0rc5 Pro

Flash Drive for OS: Patriot Xporter XT Boost 4GB Flash Drive (USB2.0 Portable) Model PEF4GUSB

Hard Drives: 2 TB parity drive with 2x 1TB Drives and 5x2TB Drives (Most are 5400 RPM Seagate Drives)

syslog.txt

That's 8 hard drives on a motherboard with only 6 SATA ports. What is your additional SATA controller card? I dont see it listed in the forum post.

I noticed this from your log file, seems to indicate some sort of drive error on disk7, so perhaps it's simulating a failed drive or it's in the middle of just adding and clearing that drive. Do any of the drives show as RED or BLUE BALLED on the emHttp Web Console?

 

I think the array may be busy dealing with the disk 7 expansion.

 

Jul 30 00:08:20 Tower emhttp: writing MBR on disk 7 (sdi) with partition 1 offset 63

Jul 30 00:08:20 Tower emhttp: re-reading (sdi) partition table

Jul 30 00:08:20 Tower emhttp: shcmd (93): udevadm settle

Jul 30 00:08:20 Tower kernel:  sdi: sdi1

Jul 30 00:08:20 Tower emhttp: clearing disk7*...

Jul 30 00:08:20 Tower emhttp: Start array...

Jul 30 00:08:20 Tower kernel: mdcmd (41): start PROTECTED_EXPANSION

Jul 30 00:08:20 Tower kernel: unraid: allocating 43960K for 1280 stripes (8 disks)

 

Jul 30 00:08:22 Tower emhttp: shcmd (121): set -o pipefail ; mount -t reiserfs -o user_xattr,acl,noatime,nodiratime /dev/md7 /mnt/disk7 |& logger

Jul 30 00:08:22 Tower kernel: REISERFS warning (device md7): sh-2021 reiserfs_fill_super: can not find reiserfs on md7

Jul 30 00:08:22 Tower logger: mount: wrong fs type, bad option, bad superblock on /dev/md7,

Jul 30 00:08:22 Tower logger:        missing codepage or helper program, or other error

Jul 30 00:08:22 Tower logger:        In some cases useful info is found in syslog - try

Jul 30 00:08:22 Tower logger:        dmesg | tail  or so

Jul 30 00:08:22 Tower logger:

Jul 30 00:08:22 Tower emhttp: _shcmd: shcmd (121): exit status: 32

Jul 30 00:08:22 Tower emhttp: disk7 mount error: 32

Jul 30 00:08:22 Tower emhttp: shcmd (122): rmdir /mnt/disk7

 

But then later on I see this,

 

Jul 30 00:14:12 Tower emhttp: shcmd (132): mkdir /mnt/disk7

Jul 30 00:14:12 Tower emhttp: shcmd (133): set -o pipefail ; mount -t reiserfs -o user_xattr,acl,noatime,nodiratime /dev/md7 /mnt/disk7 |& logger

Jul 30 00:14:12 Tower kernel: REISERFS (device md7): found reiserfs format "3.6" with standard journal

Jul 30 00:14:12 Tower kernel: REISERFS (device md7): using ordered data mode

Jul 30 00:14:12 Tower kernel: REISERFS (device md7): journal params: device md7, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30

Jul 30 00:14:12 Tower kernel: REISERFS (device md7): checking transaction log (md7)

Jul 30 00:14:13 Tower kernel: REISERFS (device md7): Using r5 hash to sort names

Jul 30 00:14:13 Tower kernel: REISERFS (device md7): Created .reiserfs_priv - reserved for xattr storage.

Jul 30 00:14:14 Tower emhttp: resized: /mnt/disk7

I forgot to update that list after I added the expansion card for the extra SATA ports. I have this card:

 

http://www.monoprice.com/products/product.asp?c_id=104&cp_id=10407&cs_id=1040702&p_id=2530&seq=1&format=2

 

I just added that 7th Drive but I had this issue before adding that drive.

 

I did some more testing and it seems that some drives are reading ~60 MB/s but still only write at ~10 MB/s. Also all the drives have a green dot.