Eugene M. Zheganin
2016-Dec-09 13:13 UTC
vfs.zfs.vdev.bio_delete_disable - crash while changing on the fly
Hi. Recently I've encountered the issue with "slow TRIM" and Sandisk SSDs, so I was told to try to disable TRIM and see what happens (thanks a lot by the way, that did it). But changing the vfs.zfs.vdev.bio_delete_disable on the fly can lead to the system crash with the probability of 50%. Is it just me or is this already known ? If it's known, why isn't this oid in a read-only list ? Thanks. P.S. My box tried to dump a core, but after a reboot savecore got nothing, so you just have to believe me. ;) Eugene.
Steven Hartland
2016-Dec-09 13:23 UTC
vfs.zfs.vdev.bio_delete_disable - crash while changing on the fly
Obviously this shouldn't happen but would need a stack trace to identify the cause. If you want to disable TRIM on ZFS you should really use: vfs.zfs.trim.enabled=0 On 09/12/2016 13:13, Eugene M. Zheganin wrote:> Hi. > > Recently I've encountered the issue with "slow TRIM" and Sandisk SSDs, > so I was told to try to disable TRIM and see what happens (thanks a lot > by the way, that did it). But changing the > vfs.zfs.vdev.bio_delete_disable on the fly can lead to the system crash > with the probability of 50%. Is it just me or is this already known ? If > it's known, why isn't this oid in a read-only list ? > > Thanks. > > P.S. My box tried to dump a core, but after a reboot savecore got > nothing, so you just have to believe me. ;) > > Eugene. > _______________________________________________ > freebsd-stable at freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe at freebsd.org"