read / write operation

[alturismo]

Hi, may someone has a hint what to look for in this usecase

 

Diskx in array here seems to have issues when i write large files to it, always needs to "breathe"

source always pauses like there would be some buffer issue ... when copying from diskx to disk1

 

could it be the controller setup ? means swapping cables ... could be helpful ?

my mainboard is MSI Z370m5, 4 sata ports used (array disks), 2 nvme pcie used (cache and UA for VM´s), so maxed out ...

 

or could it be just a disk issue, smart says all good here ... but who knows

i guess not cause after some more tests its on all disks in array ...

 

here for sample the disk1 log information

 

Jan 26 06:30:09 AlsServer kernel: ata4: SATA max UDMA/133 abar m2048@0xdd12b000 port 0xdd12b280 irq 133
Jan 26 06:30:09 AlsServer kernel: ata4: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
Jan 26 06:30:09 AlsServer kernel: ata4.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
Jan 26 06:30:09 AlsServer kernel: ata4.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
Jan 26 06:30:09 AlsServer kernel: ata4.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
Jan 26 06:30:09 AlsServer kernel: ata4.00: ATA-8: ST4000DM000-1F2168, W300HY0X, CC52, max UDMA/133
Jan 26 06:30:09 AlsServer kernel: ata4.00: 7814037168 sectors, multi 16: LBA48 NCQ (depth 32), AA
Jan 26 06:30:09 AlsServer kernel: ata4.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded
Jan 26 06:30:09 AlsServer kernel: ata4.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out
Jan 26 06:30:09 AlsServer kernel: ata4.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out
Jan 26 06:30:09 AlsServer kernel: ata4.00: configured for UDMA/133
Jan 26 06:30:09 AlsServer kernel: sd 4:0:0:0: [sde] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
Jan 26 06:30:09 AlsServer kernel: sd 4:0:0:0: [sde] 4096-byte physical blocks
Jan 26 06:30:09 AlsServer kernel: sd 4:0:0:0: [sde] Write Protect is off
Jan 26 06:30:09 AlsServer kernel: sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00
Jan 26 06:30:09 AlsServer kernel: sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Jan 26 06:30:09 AlsServer kernel: sde: sde1
Jan 26 06:30:09 AlsServer kernel: sd 4:0:0:0: [sde] Attached SCSI disk
Jan 26 06:30:29 AlsServer emhttpd: ST4000DM000-1F2168_W300HY0X (sde) 512 7814037168
Jan 26 06:30:29 AlsServer kernel: mdcmd (2): import 1 sde 64 3907018532 0 ST4000DM000-1F2168_W300HY0X
Jan 26 06:30:29 AlsServer kernel: md: import disk1: (sde) ST4000DM000-1F2168_W300HY0X size: 3907018532
Jan 26 06:30:32 AlsServer emhttpd: shcmd (25): /usr/local/sbin/set_ncq sde 1
Jan 26 06:30:32 AlsServer root: set_ncq: setting sde queue_depth to 1
Jan 26 06:30:32 AlsServer emhttpd: shcmd (26): echo 128 > /sys/block/sde/queue/nr_requests

 

attached sample what i mean and diskstat what shows pretty simple what happens with read / write ...

Edited February 2, 2019 by alturismo
update cause its all disks ...