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Report ashift of L2ARC devices in zdb

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Commit 8af1104f does not actually store the ashift of cache devices in
their label. However, in order to facilitate reporting the ashift
through zdb, we enable this in the present commit. We also document
how the retrieval of the ashift is done.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #15331
This commit is contained in:
George Amanakis
2023-10-03 01:57:09 +02:00
committed by Brian Behlendorf
parent 3079bf2e6c
commit 608741d062
2 changed files with 11 additions and 1 deletions
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cmd/zdb/zdb.c
+1 -1
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@@ -5179,7 +5179,7 @@ dump_label(const char *dev)
if (nvlist_size(config, &size, NV_ENCODE_XDR) != 0)
size = buflen;
/* If the device is a cache device clear the header. */
/* If the device is a cache device read the header. */
if (!read_l2arc_header) {
if (nvlist_lookup_uint64(config,
ZPOOL_CONFIG_POOL_STATE, &l2cache) == 0 &&