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Fix read-only pool hang on unmount 

During mount a filesystem dataset would have the MS_RDONLY bit
incorrectly cleared even if the entire pool was read-only.
There is existing to code to handle this case but it was being run
before the property callbacks were registered.  To resolve the
issue we move this read-only code after the callback registration.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1338
This commit is contained in:
Brian Behlendorf 2013-07-17 09:15:46 -07:00
parent 76351672c2
commit c9ada6d5a0
1 changed files with 5 additions and 1 deletions
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6
module/zfs/zfs_vfsops.c
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@ -233,10 +233,11 @@ zfs_register_callbacks(zfs_sb_t *zsb)
{
struct dsl_dataset *ds = NULL;
objset_t *os = zsb->z_os;
boolean_t do_readonly = B_FALSE;
int error = 0;
if (zfs_is_readonly(zsb) || !spa_writeable(dmu_objset_spa(os)))
readonly_changed_cb(zsb, B_TRUE);
do_readonly = B_TRUE;
/*
* Register property callbacks.
@ -271,6 +272,9 @@ zfs_register_callbacks(zfs_sb_t *zsb)
if (error)
goto unregister;
if (do_readonly)
readonly_changed_cb(zsb, B_TRUE);
return (0);
unregister: