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Check large block feature flag on volumes

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Since ZoL allows large blocks to be used by volumes, unlike upstream
illumos, the feature flag must be checked prior to volume creation.
This is critical because unlike filesystems, volumes will create a
object which uses large blocks as part of the create.  Therefore, it
cannot be safely checked in zfs_check_settable() after the dataset
can been created.

In addition this patch updates the relevant error messages to use
zfs_nicenum() to print the maximum blocksize.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3591
This commit is contained in:
Brian Behlendorf
2015-08-24 14:18:48 -07:00
parent c495fe2c1c
commit 4cb7b9c5d4
4 changed files with 36 additions and 5 deletions
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include/sys/zvol.h
+1 -1
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@@ -34,7 +34,7 @@
#ifdef _KERNEL
extern int zvol_check_volsize(uint64_t volsize, uint64_t blocksize);
extern int zvol_check_volblocksize(uint64_t volblocksize);
extern int zvol_check_volblocksize(const char *name, uint64_t volblocksize);
extern int zvol_get_stats(objset_t *os, nvlist_t *nv);
extern boolean_t zvol_is_zvol(const char *);
extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);