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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2025-03-26 09:39:59 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2025-03-26 09:39:59 -0400 |
| commit | 7c66e9fac5c7883fb85107f06f472a2fa3ed4322 (patch) | |
| tree | 51dbc1ebf5f121ff96f4fcee84f68fce44be76e0 | |
| parent | 2160e9a7bd9b779cc1d8d050ea8e6760df7db8ce (diff) | |
migrate_superblock: make sure we remove old superblock
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | c_src/cmd_migrate.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/c_src/cmd_migrate.c b/c_src/cmd_migrate.c index 8155a2b3..639aba64 100644 --- a/c_src/cmd_migrate.c +++ b/c_src/cmd_migrate.c @@ -419,6 +419,11 @@ int cmd_migrate_superblock(int argc, char *argv[]) sb->layout.sb_offset[0] = cpu_to_le64(BCH_SB_SECTOR); sb->layout.sb_offset[1] = cpu_to_le64(BCH_SB_SECTOR + sb_size); + /* also write first 0-3.5k bytes with zeroes, ensure we blow away old + * superblock */ + static const char zeroes[BCH_SB_SECTOR << 9]; + xpwrite(fd, zeroes, BCH_SB_SECTOR << 9, 0, "zeroing start of disk"); + bch2_super_write(fd, sb); close(fd); |