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Bug #3955
closedztest failure: assertion refcount_count(&tx->tx_space_written) + delta <= tx->tx_space_towrite
Start date:
2013-08-02
Due date:
% Done:
100%
Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:
Description
Analysis by Matt Ahrens:
ztest fails this assertion because ztest_dmu_read_write() does dmu_tx_hold_free(tx, bigobj, bigoff, bigsize); and then dmu_object_set_checksum(os, bigobj, (enum zio_checksum)ztest_random_dsl_prop(ZFS_PROP_CHECKSUM), tx); If the region to free is past the end of the file, the DMU assumes that there will be nothing to do for this object. However, ztest does set_checksum(), which must modify the dnode. The fix is for ztest to also call dmu_tx_hold_bonus(tx, bigobj); so we can account for the dirty data associated with setting the checksum
This was a regression caused by bug #3834.
Related issues
Updated by Christopher Siden almost 9 years ago
- Status changed from In Progress to Closed
commit be9000c Author: Matthew Ahrens <mahrens@delphix.com> Date: Wed Aug 7 11:32:46 2013 3955 ztest failure: assertion refcount_count(&tx->tx_space_written) + delta <= tx->tx_space_towrite Reviewed by: Adam Leventhal <ahl@delphix.com> Reviewed by: Dan Kimmel <dan.kimmel@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Approved by: Richard Lowe <richlowe@richlowe.net>
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