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| author | David Teigland <teigland@redhat.com> | 2021-02-18 11:42:32 -0600 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2021-02-18 11:42:32 -0600 |
| commit | 12667e9897ad54f5723463b4c864c8259ba0be2a (patch) | |
| tree | 88889674ab648dea1ca1c9dce7a8403876326e3c | |
| parent | 3cba07125457b82045f41bfafc67733c0dad89a2 (diff) | |
| download | lvm2-12667e9897ad54f5723463b4c864c8259ba0be2a.tar.gz | |
fix check for md raid imsm signature on 4k devices
On devices with 4k logical block size, the imsm signature
is located 8k from the end of the device, not 1k as is
the case for devices with 512 LBS.
| -rw-r--r-- | lib/device/dev-md.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/device/dev-md.c b/lib/device/dev-md.c index 36494b12b..3049b81b7 100644 --- a/lib/device/dev-md.c +++ b/lib/device/dev-md.c @@ -56,6 +56,16 @@ static int _dev_has_imsm_magic(struct device *dev, uint64_t devsize_sectors) { char imsm_signature[IMSM_SIG_LEN]; uint64_t off = (devsize_sectors * 512) - 1024; + unsigned int physical_block_size = 0; + unsigned int logical_block_size = 0; + + if (!dev_get_direct_block_sizes(dev, &physical_block_size, &logical_block_size)) + return_0; + + if (logical_block_size == 4096) + off = (devsize_sectors * 512) - 8192; + else + off = (devsize_sectors * 512) - 1024; if (!dev_read_bytes(dev, off, IMSM_SIG_LEN, imsm_signature)) return_0; |