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zpool reopen should detect expanded devices

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Update bdev_capacity to have wholedisk vdevs query the
size of the underlying block device (correcting for the size
of the efi parition and partition alignment) and therefore detect
expanded space.

Correct vdev_get_stats_ex so that the expandsize is aligned
to metaslab size and new space is only reported if it is large
enough for a new metaslab.

Reviewed by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: John Wren Kennedy <jwk404@gmail.com>
Signed-off-by: sara hartse <sara.hartse@delphix.com>
External-issue: LX-165
Closes #7546 
Issue #7582
This commit is contained in:
Sara Hartse
2018-05-31 10:36:37 -07:00
committed by Brian Behlendorf
parent d1f06ec5bc
commit 74d42600d8
6 changed files with 106 additions and 41 deletions
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lib/libefi/rdwr_efi.c
+19 -1
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@@ -22,6 +22,7 @@
/*
* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2012 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2018 by Delphix. All rights reserved.
*/
#include <stdio.h>
@@ -1154,7 +1155,7 @@ efi_use_whole_disk(int fd)
/*
* Find the last physically non-zero partition.
* This is the reserved partition.
* This should be the reserved partition.
*/
for (i = 0; i < efi_label->efi_nparts; i ++) {
if (resv_start < efi_label->efi_parts[i].p_start) {
@@ -1163,6 +1164,23 @@ efi_use_whole_disk(int fd)
}
}
/*
* Verify that we've found the reserved partition by checking
* that it looks the way it did when we created it in zpool_label_disk.
* If we've found the incorrect partition, then we know that this
* device was reformatted and no longer is soley used by ZFS.
*/
if ((efi_label->efi_parts[resv_index].p_size != EFI_MIN_RESV_SIZE) ||
(efi_label->efi_parts[resv_index].p_tag != V_RESERVED) ||
(resv_index != 8)) {
if (efi_debug) {
(void) fprintf(stderr,
"efi_use_whole_disk: wholedisk not available\n");
}
efi_free(efi_label);
return (VT_ENOSPC);
}
/*
* Find the last physically non-zero partition before that.
* This is the data partition.