Implemented as a seperate struct SeekableCachedChunkReader that contains
the original as an Arc, since the read_at future captures the
CachedChunkReader, which would otherwise not work with the lifetimes
required by AsyncRead. This is also the reason we cannot use a shared
read buffer and have to allocate a new one for every read. It also means
that the struct items required for AsyncRead/Seek do not need to be
included in a regular CachedChunkReader.
This is intended as a replacement for AsyncIndexReader, so we have less
code duplication and can utilize the LRU cache there too (even though
actual request concurrency is not supported in these traits).
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
when we remove a datastore via api/cli, the proxy
has sometimes leftover references to that datastore in its
DATASTORE_MAP which includes an open filehandle on the
'.lock' file
this prevents unmounting/exporting the datastore even after removal,
only a reload/restart of the proxy did help
add a command to our command socket, which removes all non
configured datastores from the map, dropping the open filehandle
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
especially for the last group, without this the progress would report:
"percentage done: 100.00% (1 of 2 groups, 1 of 1 group snapshots)"
instead of the more logical
"percentage done: 100.00% (2 of 2 groups)"
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
only check every 1024'th, which is cheaper to do than a modulo, as we
can just mask the 10 least-significant-bits and check if the result
is zero.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Fixes a non-negligible performance regression from commit
7f394c807b
While we skip known-verified chunks in the stat-and-inode-sort loop,
those are only the ones from previous indexes. If there's a repeated
chunk in one index they would get re-verified more often as required.
So, add the check again explicitly to the read+verify loop.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
before reading the chunks from disk in the order of the index file,
stat them first and sort them by inode number.
this can have a very positive impact on read speed on spinning disks,
even with the additional stat'ing of the chunks.
memory footprint should be tolerable, for 1_000_000 chunks
we need about ~16MiB of memory (Vec of 64bit position + 64bit inode)
(assuming 4MiB Chunks, such an index would reference 4TiB of data)
two small benchmarks (single spinner, ext4) here showed an improvement from
~430 seconds to ~330 seconds for a 32GiB fixed index
and from
~160 seconds to ~120 seconds for a 10GiB dynamic index
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
found and semi-manually replaced by using:
codespell -L mut -L crate -i 3 -w
Mostly in comments, but also email notification and two occurrences
of misspelled 'reserved' struct member, which where not used and
cargo build did not complain about the change, soo ...
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
we will reuse that later in the client, so we need it somewhere
we can use from there
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
[add strongly typed ArchiveEntry and put api code into helpers.rs]
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
with the fix for #2909 (improving handling missing chunks), we
changed from bailing to warning during a garbage collection when
updating the atime of a chunk.
but, updating the atime can not only fail when the chunk is missing,
but also on other occasions, e.g. no permissions or more importantly,
no space left on the device. in that case, the atime of a valid and used
chunk cannot be updated, and the second sweep of the gc will remove that chunk.
[0] is a real world example of that happening.
instead, only warn on really missin chunks, and bail on all other
errors.
0: https://forum.proxmox.com/threads/pbs-server-full-two-days-later-almost-empty.83274/
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
all the verify methods pass along the following:
- task worker
- datastore
- corrupt and verified chunks
might as well pull that out into a common type, with the added bonus of
now having a single point for construction instead of copying the
default capacaties in three different modules..
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
the error message don't make sense with an empty default
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
chunk_stream one can be collapsed, since split == split_to with at set
to buffer.len() anyway.
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Fabian Grünbichler
Stefan Reiter
Dominik Csapak
Dietmar Maurer
Hannes Laimer
Wolfgang Bumiller
Thomas Lamprecht