Re: [lustre-discuss] Lustre Client Lockup Under Buffered I/O (2.14/2.15)

2022-01-18 Thread Andreas Dilger via lustre-discuss
On Jan 18, 2022, at 13:40, Ellis Wilson via lustre-discuss mailto:lustre-discuss@lists.lustre.org>> wrote: Recently we've switched from using ZFS to ldiskfs as the backing filesystem to work around some performance issues and I'm finding that when I put the cluster under load (with as little as

[lustre-discuss] Lustre Client Lockup Under Buffered I/O (2.14/2.15)

2022-01-18 Thread Ellis Wilson via lustre-discuss
Hi all, Recently we've switched from using ZFS to ldiskfs as the backing filesystem to work around some performance issues and I'm finding that when I put the cluster under load (with as little as a single client) I can almost completely lockup the client. SSH (even existing sessions) stall, i