On Wed, 18 Nov 2020, Faaland, Olaf P. wrote:
You mentioned you may have a fix for zfs_send.c in ZFS. Although Lustre
tickles the bug, it's not likely that is the only way to tickle it.
Is there already a bug report for your issue at
https://github.com/openzfs/zfs/issues? If not, can you create one, even
if your patch isn't successful? That's the place to get your patch
landed, and/or get help with the issue.
The issue is already reported as #8067. The patch mentioned in this
article is still valid, but for a different file; the txg_wait_synced()
call is at line 2215 of dmu_send.c on ZFS 0.7.13. This patch does not fix
that very slow performance of 'zfs recv', but it does fix the 'dataset
does not exist' problem.
Steve
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