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fdcd952b4d
There were two cases when attempting to set the vdev block device scheduler which would causes console warnings. The first case was when the vdev used a loop, ram, dm, or other such device which doesn't support a configurable scheduler. In these cases attempting to set a scheduler is pointless and can be safely skipped. The secord case is slightly more troubling. We were seeing transient cases where setting the elevator would return -EFAULT. On retry everything is fine so there appears to be a small window where this is possible. To handle that case we silently retry up to three times before reporting the warning. In all of the above cases the warning is harmless and at worse you may see slightly different performance characteristics from one or more of your vdevs. |
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| nvpair | ||
| unicode | ||
| zcommon | ||
| zfs | ||
| zpios | ||
| .gitignore | ||
| Makefile.in | ||