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new helpers:
- bch2_csum_to_text()
- bch2_csum_err_msg()
standardize our checksum error messages a bit, and print out the
checksums a bit more nicely.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
this definitely should _not_ be 1, and we don't actually want any
concurrency limiting at all here - btree node read completions are
getting blocked behind btree node write submissions.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Seeing weird latency issues in the btree node read path - add one
bch2_btree_node_read_done().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Seeing strange performance issues that might be caused by memory
pressure causing prefetched nodes to be evicted before they're used.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
BCH_FS_fsck_done -> BCH_FS_fsck_running; set when we might be fixing
fsck errors. Also; set fix_errors to ask by default when fsck is
running.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
New flag so that triggers can distinguish whether we're running
transactional or atomic triggers (or gc) - unifying the callbacks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Prep work for disk space accounting rewrite: we're going to want to use
a single callback for both of our current triggers, so we need to change
them to have the same type signature first.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Prep work for disk space accounting rewrite: we're going to want to use
a single callback for both of our current triggers, so we need to change
them to have the same type signature first.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
BCH_MEMBER_DURABILITY() was not present initially; a value of 0 means
use the default, nonzero means use v - 1.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Use the new bch_member->seq, sb->write_time fields to detect split brain
and kick out devices when necessary.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Add new fields for split brain detection:
- bch_member->seq, which tracks the sequence number of the last superblock
write that happened to each member device
- bch_sb->write_time, which tracks the time of the last superblock write,
to allow detection of when two members have diverged but had the same
number of superblock writes.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
nochanges means "we cannot issue writes at all"; it's possible to go
into a pseudo read-write mode where we pin dirty metadata in memory,
which is used for fsck in dry run mode and doing journal replay on a
read only mount, but we do not want to allow an actual read-write mount
in nochanges mode.
But we do always want to allow early read-write, during recovery - this
patch clarifies that.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
