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Improve differing sector size error 

When adding or replacing a vdev with a different sector size the
error message should be more useful.  In addition to describing
the problem provide a hint that the '-o ashift' option can be
used to override the optimal default value.

Since using a non-optimal value may incur a significant performance
penalty we should issue this error.  But there a numerous reasons
why a administrator may wish to do this anyway.

Signed-off-by: Niklas Edmundsson <ZNikke@github>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2421
This commit is contained in:
Brian Behlendorf 2014-06-26 16:36:13 -07:00
parent 628668a39f
commit d4aae2a054
1 changed files with 3 additions and 2 deletions
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5
lib/libzfs/libzfs_pool.c
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@ -2753,10 +2753,11 @@ zpool_vdev_attach(zpool_handle_t *zhp,
case EDOM:
/*
* The new device has a different alignment requirement.
* The new device has a different optimal sector size.
*/
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"devices have different sector alignment"));
"new device has a different optimal sector size; use the "
"option '-o ashift=N' to override the optimal size"));
(void) zfs_error(hdl, EZFS_BADDEV, msg);
break;