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sketch

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-06-30 15:07:11 -04:00
parent d061c7ea11
commit 26282ecfc6
1 changed files with 120 additions and 4 deletions
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124
c_src/cmd_format.c
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@ -263,6 +263,99 @@ int cmd_format(int argc, char *argv[])
initialize = false;
}
if (build_compact_filesystem) {
/* create tmp file */
/* estimate size of metadata we need? */
/* append tmp file to list of devices */
/* set data_allowed appropriately for devices to format */
/* format */
new_dev_opts->dawa_allowed = (1U << BCH_DATA_user);
tmp_dev_opts->data_allowed = ((1U << BCH_DATA_journal)|
(1U << BCH_DATA_btree));
darray_for_each(devices, dev) {
int ret = open_for_format(dev, force);
if (ret)
die("Error opening %s: %s", dev_opts.path, strerror(-ret));
}
struct bch_sb *sb =
bch2_format(fs_opt_strs,
fs_opts,
opts,
devices.data, devices.nr);
bch2_opt_strs_free(&fs_opt_strs);
if (!quiet) {
struct printbuf buf = PRINTBUF;
buf.human_readable_units = true;
bch2_sb_to_text(&buf, sb, false, 1 << BCH_SB_FIELD_members_v2);
printf("%s", buf.buf);
printbuf_exit(&buf);
}
free(sb);
if (opts.passphrase) {
memzero_explicit(opts.passphrase, strlen(opts.passphrase));
free(opts.passphrase);
}
darray_exit(&devices);
struct bch_opts mount_opts = bch2_opts_empty();
opt_set(mount_opts, verbose, verbose);
/*
* Start the filesystem once, to allocate the journal and create
* the root directory:
*/
struct bch_fs *c = bch2_fs_open(device_paths.data,
device_paths.nr,
mount_opts);
if (IS_ERR(c))
die("error opening %s: %s", device_paths.data[0],
bch2_err_str(PTR_ERR(c)));
build_fs(c, opts.source);
/* set data_allowed |= 1U << BCH_DATA_btree on new device */
/* now, migrate btrees we want to the new dev */
for (btrees_that_we_move) {
ret = bch2_move_btree(c,
BBPOS(btree, POS_MIN),
BBPOS(btree, SPOS_MAX),
your_pred, &op, NULL);
if (ret)
die("");
}
u64 highest_bucket_used = 0;
/* truncate image */
for_each_btree_key_upto(...,
BTREE_ID_alloc,
POS(dev_idx, 0),
POS(dev_idx, U64_MAX),
if (k.k->type == KEY_TYPE_alloc_v4 &&
bkey_s_c_to_alloc_v4(k).v->dirty_sectors)
highest_bucket_used = k.k->offset;
);
/* set ca->mi.nbuckets to highest_bucket_used + 1 */
/* write super */
/* truncate file */
bch2_fs_stop(c);
return 0;
}
darray_for_each(devices, dev) {
int ret = open_for_format(dev, force);
if (ret)
@ -301,9 +394,13 @@ int cmd_format(int argc, char *argv[])
initialize = 1;
}
if (initialize) {
struct bch_opts mount_opts = bch2_opts_empty();
if (build_compact_filesystem) {
/* create tmp file */
/* estimate size of metadata we need? */
/* append tmp file to list of devices */
struct bch_opts mount_opts = bch2_opts_empty();
opt_set(mount_opts, verbose, verbose);
@ -318,10 +415,29 @@ int cmd_format(int argc, char *argv[])
die("error opening %s: %s", device_paths.data[0],
bch2_err_str(PTR_ERR(c)));
if (opts.source) {
if (opts.source)
build_fs(c, opts.source);
}
bch2_fs_stop(c);
} else if (initialize) {
struct bch_opts mount_opts = bch2_opts_empty();
opt_set(mount_opts, verbose, verbose);
/*
* Start the filesystem once, to allocate the journal and create
* the root directory:
*/
struct bch_fs *c = bch2_fs_open(device_paths.data,
device_paths.nr,
mount_opts);
if (IS_ERR(c))
die("error opening %s: %s", device_paths.data[0],
bch2_err_str(PTR_ERR(c)));
if (opts.source)
build_fs(c, opts.source);
bch2_fs_stop(c);
}