Add disable subcommand for dedupe command group.
Signed-off-by: Qu Wenruo <[email protected]>
---
Documentation/btrfs-dedupe.asciidoc | 5 +++++
btrfs-completion | 2 +-
cmds-dedupe.c | 42 +++++++++++++++++++++++++++++++++++++
3 files changed, 48 insertions(+), 1 deletion(-)
diff --git a/Documentation/btrfs-dedupe.asciidoc
b/Documentation/btrfs-dedupe.asciidoc
index 8ab40ab..28fe05f 100644
--- a/Documentation/btrfs-dedupe.asciidoc
+++ b/Documentation/btrfs-dedupe.asciidoc
@@ -21,6 +21,11 @@ use with caution.
SUBCOMMAND
----------
+*disable* <path>::
+Disable in-band de-duplication for a filesystem.
++
+This will trash all stored dedupe hash.
++
*enable* [options] <path>::
Enable in-band de-duplication for a filesystem.
+
diff --git a/btrfs-completion b/btrfs-completion
index 50f7ea2..9a6c73b 100644
--- a/btrfs-completion
+++ b/btrfs-completion
@@ -40,7 +40,7 @@ _btrfs()
commands_property='get set list'
commands_quota='enable disable rescan'
commands_qgroup='assign remove create destroy show limit'
- commands_dedupe='enable'
+ commands_dedupe='enable disable'
commands_replace='start status cancel'
if [[ "$cur" == -* && $cword -le 3 && "$cmd" != "help" ]]; then
diff --git a/cmds-dedupe.c b/cmds-dedupe.c
index d9dcb10..64ac0f2 100644
--- a/cmds-dedupe.c
+++ b/cmds-dedupe.c
@@ -190,9 +190,51 @@ out:
return ret;
}
+static const char * const cmd_dedupe_disable_usage[] = {
+ "btrfs dedupe disable <path>",
+ "Disable in-band(write time) de-duplication of a btrfs.",
+ NULL
+};
+
+static int cmd_dedupe_disable(int argc, char **argv)
+{
+ struct btrfs_ioctl_dedupe_args dargs;
+ DIR *dirstream;
+ char *path;
+ int fd;
+ int ret;
+
+ if (check_argc_exact(argc, 2))
+ usage(cmd_dedupe_disable_usage);
+
+ path = argv[1];
+ fd = open_file_or_dir(path, &dirstream);
+ if (fd < 0) {
+ error("failed to open file or directory: %s", path);
+ return 1;
+ }
+ memset(&dargs, 0, sizeof(dargs));
+ dargs.cmd = BTRFS_DEDUPE_CTL_DISABLE;
+
+ ret = ioctl(fd, BTRFS_IOC_DEDUPE_CTL, &dargs);
+ if (ret < 0) {
+ error("failed to disable inband deduplication: %s",
+ strerror(errno));
+ ret = 1;
+ goto out;
+ }
+ ret = 0;
+
+out:
+ close_file_or_dir(fd, dirstream);
+ return 0;
+}
+
const struct cmd_group dedupe_cmd_group = {
dedupe_cmd_group_usage, dedupe_cmd_group_info, {
{ "enable", cmd_dedupe_enable, cmd_dedupe_enable_usage, NULL,
0},
+ { "disable", cmd_dedupe_disable, cmd_dedupe_disable_usage,
+ NULL, 0},
NULL_CMD_STRUCT
}
};
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
