diff options
| author | Kent Overstreet <kmo@daterainc.com> | 2013-07-11 19:42:51 -0700 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-10 21:55:55 -0800 |
| commit | 77c320eb46e216c17aee5c943949229ccfed6904 (patch) | |
| tree | b397c28bbd46f50d0de0fa94a967964cac4b4a7e /drivers/md/bcache/sysfs.c | |
| parent | 49b1212dfacfe51f951442563d1617bb06aac575 (diff) | |
bcache: Add on error panic/unregister setting
Works kind of like the ext4 setting, to panic or remount read only on
errors.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'drivers/md/bcache/sysfs.c')
| -rw-r--r-- | drivers/md/bcache/sysfs.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 924dcfdae111..4211d82179fc 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -21,6 +21,12 @@ static const char * const cache_replacement_policies[] = { NULL }; +static const char * const error_actions[] = { + "unregister", + "panic", + NULL +}; + write_attribute(attach); write_attribute(detach); write_attribute(unregister); @@ -90,6 +96,7 @@ rw_attribute(discard); rw_attribute(running); rw_attribute(label); rw_attribute(readahead); +rw_attribute(errors); rw_attribute(io_error_limit); rw_attribute(io_error_halflife); rw_attribute(verify); @@ -492,6 +499,10 @@ lock_root: sysfs_print(writeback_keys_failed, atomic_long_read(&c->writeback_keys_failed)); + if (attr == &sysfs_errors) + return bch_snprint_string_list(buf, PAGE_SIZE, error_actions, + c->on_error); + /* See count_io_errors for why 88 */ sysfs_print(io_error_halflife, c->error_decay * 88); sysfs_print(io_error_limit, c->error_limit >> IO_ERROR_SHIFT); @@ -569,6 +580,15 @@ STORE(__bch_cache_set) sysfs_strtoul(congested_write_threshold_us, c->congested_write_threshold_us); + if (attr == &sysfs_errors) { + ssize_t v = bch_read_string_list(buf, error_actions); + + if (v < 0) + return v; + + c->on_error = v; + } + if (attr == &sysfs_io_error_limit) c->error_limit = strtoul_or_return(buf) << IO_ERROR_SHIFT; @@ -620,6 +640,7 @@ static struct attribute *bch_cache_set_files[] = { &sysfs_average_key_size, &sysfs_dirty_data, + &sysfs_errors, &sysfs_io_error_limit, &sysfs_io_error_halflife, &sysfs_congested, |