I followed the instructions for adding a USB drive for spare storage for my antlets. I created at Windows 10 antlet and defined an IDE additional storage location on the external Zpool. The Windows guest was able to access and format the additional storage. When attempting to copy files to the storage, however, the entire antsle becomes unresponsive after starting the copy. RDP connections are dropped, and console connections to the antsle itself, while still connected, don't respond to some commands -- ie: "w" locks up the terminal, but "ls -la" seems to work okay. "Top" shows a process called z_wr_iss is taking up the vast majority of the CPUs.
What did I do wrong and/or what can I do to fix this?
Chad
According to this, maybe it is the compression settings for the zpool:
https://github.com/zfsonlinux/zfs/issues/1637
Can you change the compression on the zpool to lz4? (I don't know how exactly)
I thought if you picked "inherit" when creating it, it would use lz4, but maybe not.
I'll try that! Thanks! But I think I'm going to turn off compression altogether on the external pool. Space is cheap for that drive, but it's slow, which is what I think is causing problems.
I have an external USB drive I'm using for Plex media for my Plex antlet. It's zpool currently has compression off, but after reading this:
https://www.servethehome.com/the-case-for-using-zfs-compression/
I'm going to turn lz4 on to see how it affects its performance.
Thanks for looking into this guys.
Just to clarify when you create an antlet with compression type "inherit" if will just use the compression type that is set by default.
To change the default go to the gear icon in the top right of antMan -> System Settings -> ZFS settings -> Compression
