Re: TRIM, iSCSI and %busy waves

Hello, On 05.04.2018 20:00, Warner Losh wrote: I'm also having a couple of iSCSI issues that I'm dealing through bounty with, so may be this is related somehow. Or may be not. Due to some issues in iSCSI stack my system sometimes reboots, and then these "waves" are stopped for

Re: TRIM, iSCSI and %busy waves

Hello, On 05.04.2018 19:57, Steven Hartland wrote: You can indeed tune things here are the relevant sysctls: sysctl -a | grep trim |grep -v kstat vfs.zfs.trim.max_interval: 1 vfs.zfs.trim.timeout: 30 vfs.zfs.trim.txg_delay: 32 vfs.zfs.trim.enabled: 1 vfs.zfs.vdev.trim_max_pending: 1

Re: TRIM, iSCSI and %busy waves

On Thu, Apr 5, 2018 at 8:08 AM, Eugene M. Zheganin wrote: > Hi, > > I have a production iSCSI system (on zfs of course) with 15 ssd disks and > it's often suffering from TRIMs. > > Well, I know what TRIM is for, and I know it's a good thing, but sometimes > (actually often) I'm

Re: TRIM, iSCSI and %busy waves

You can indeed tune things here are the relevant sysctls: sysctl -a | grep trim |grep -v kstat vfs.zfs.trim.max_interval: 1 vfs.zfs.trim.timeout: 30 vfs.zfs.trim.txg_delay: 32 vfs.zfs.trim.enabled: 1 vfs.zfs.vdev.trim_max_pending: 1 vfs.zfs.vdev.trim_max_active: 64

Problems with ifconfig when starting all jails after 10.3 -> 10.4 upgrade

Hi all, I just upgraded from 10.3 to 10.4, and "/etc/rc.d/jail start" is having problems starting all of my jails: # /etc/rc.d/jail start Starting jails:xipbuild_3_3: created ifconfig:: bad value jail: xipbuild_3_3_8: /sbin/ifconfig lo1 inet 10.1.1.38/32 alias: failed xipbuild_3_4: created

TRIM, iSCSI and %busy waves

Hi, I have a production iSCSI system (on zfs of course) with 15 ssd disks and it's often suffering from TRIMs. Well, I know what TRIM is for, and I know it's a good thing, but sometimes (actually often) I'm seeing my disks in gstat are overwhelmed by the TRIM waves, this looks like a "wave"