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authorKeith Busch <kbusch@kernel.org>2020-09-24 13:53:28 -0700
committerJens Axboe <axboe@kernel.dk>2020-10-13 15:05:05 -0600
commit3b481d91356e5693d8358d4ef9c383bdb92c8da0 (patch)
treeafedde5da48885555103d2324c064777e024011a /block
parent47be77c2f80412f903134a57caea25fa3fc5f578 (diff)
block: add zone specific block statuses
A zoned device with limited resources to open or activate zones may return an error when the host exceeds those limits. The same command may be successful if retried later, but the host needs to wait for specific zone states before it should expect a retry to succeed. Have the block layer provide an appropriate status for these conditions so applications can distinuguish this error for special handling. Cc: linux-api@vger.kernel.org Cc: Niklas Cassel <niklas.cassel@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/blk-core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index ac00d2fa4eb4..2db8bda43b6e 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -186,6 +186,10 @@ static const struct {
/* device mapper special case, should not leak out: */
[BLK_STS_DM_REQUEUE] = { -EREMCHG, "dm internal retry" },
+ /* zone device specific errors */
+ [BLK_STS_ZONE_OPEN_RESOURCE] = { -ETOOMANYREFS, "open zones exceeded" },
+ [BLK_STS_ZONE_ACTIVE_RESOURCE] = { -EOVERFLOW, "active zones exceeded" },
+
/* everything else not covered above: */
[BLK_STS_IOERR] = { -EIO, "I/O" },
};