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Code Releases Activity

Impose chunk size limitation.

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This commit is contained in:
Alasdair Kergon 2005-09-30 22:20:14 +00:00
parent d7b6fa9cd0
commit 5471a80a96
1 changed files with 6 additions and 1 deletions
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7
tools/lvcreate.c
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@ -303,7 +303,12 @@ static int _read_params(struct lvcreate_params *lp, struct cmd_context *cmd,
return 0;
}
lp->chunk_size = 2 * arg_uint_value(cmd, chunksize_ARG, 8);
// FIXME Restrict chunk_size to power of 2 in range PAGE_SIZE up to 512k (=1024)
if (lp->chunk_size < 8 || lp->chunk_size > 1024 ||
(lp->chunk_size & (lp->chunk_size - 1))) {
log_error("Chunk size must be a power of 2 in the "
"range 4K to 512K");
return 0;
}
log_verbose("Setting chunksize to %d sectors.", lp->chunk_size);
if (!(lp->segtype = get_segtype_from_string(cmd, "snapshot"))) {