5b15e2ecaf
Notable changes:
* The only big change is the switch to using a custom QIOChannel for
savevm-async, because the previously used QEMUFileOps was dropped.
Changes to the current implementation:
* Switch to vector based methods as required for an IO channel. For
short reads the passed-in IO vector is stuffed with zeroes at the
end, just to be sure.
* For reading: The documentation in include/io/channel.h states that
at least one byte should be read, so also error out when whe are
at the very end instead of returning 0.
* For reading: Fix off-by-one error when request goes beyond end.
The wrong code piece was:
if ((pos + size) > maxlen) {
size = maxlen - pos - 1;
}
Previously, the last byte would not be read. It's actually
possible to get a snapshot .raw file that has content all the way
up the final 512 byte (= BDRV_SECTOR_SIZE) boundary without any
trailing zero bytes (I wrote a script to do it).
Luckily, it didn't cause a real issue, because qemu_loadvm_state()
is not interested in the final (i.e. QEMU_VM_VMDESCRIPTION)
section. The buffer for reading it is simply freed up afterwards
and the function will assume that it read the whole section, even
if that's not the case.
* For writing: Make use of the generated blk_pwritev() wrapper
instead of manually wrapping the coroutine to simplify and save a
few lines.
* Adapt to changed interfaces for blk_{pread,pwrite}:
* a9262f551e ("block: Change blk_{pread,pwrite}() param order")
* 3b35d4542c ("block: Add a 'flags' param to blk_pread()")
* bf5b16fa40 ("block: Make blk_{pread,pwrite}() return 0 on success")
Those changes especially affected the qemu-img dd patches, because
the context also changed, but also some of our block drivers used
the functions.
* Drop qemu-common.h include: it got renamed after essentially
everything was moved to other headers. The only remaining user I
could find for things dropped from the header between 7.0 and 7.1
was qemu_get_vm_name() in the iscsi-initiatorname patch, but it
already includes the header to which the function was moved.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
51 lines
1.7 KiB
Diff
51 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Wolfgang Bumiller <w.bumiller@proxmox.com>
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Date: Mon, 6 Apr 2020 12:16:35 +0200
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Subject: [PATCH] PVE: [Config] glusterfs: no default logfile if daemonized
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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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---
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block/gluster.c | 15 +++++++++++----
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1 file changed, 11 insertions(+), 4 deletions(-)
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diff --git a/block/gluster.c b/block/gluster.c
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index b60213ab80..93da76bc31 100644
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--- a/block/gluster.c
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+++ b/block/gluster.c
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@@ -42,7 +42,7 @@
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#define GLUSTER_DEBUG_DEFAULT 4
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#define GLUSTER_DEBUG_MAX 9
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#define GLUSTER_OPT_LOGFILE "logfile"
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-#define GLUSTER_LOGFILE_DEFAULT "-" /* handled in libgfapi as /dev/stderr */
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+#define GLUSTER_LOGFILE_DEFAULT NULL
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/*
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* Several versions of GlusterFS (3.12? -> 6.0.1) fail when the transfer size
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* is greater or equal to 1024 MiB, so we are limiting the transfer size to 512
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@@ -424,6 +424,7 @@ static struct glfs *qemu_gluster_glfs_init(BlockdevOptionsGluster *gconf,
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int old_errno;
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SocketAddressList *server;
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unsigned long long port;
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+ const char *logfile;
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glfs = glfs_find_preopened(gconf->volume);
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if (glfs) {
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@@ -466,9 +467,15 @@ static struct glfs *qemu_gluster_glfs_init(BlockdevOptionsGluster *gconf,
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}
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}
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- ret = glfs_set_logging(glfs, gconf->logfile, gconf->debug);
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- if (ret < 0) {
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- goto out;
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+ logfile = gconf->logfile;
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+ if (!logfile && !is_daemonized()) {
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+ logfile = "-";
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+ }
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+ if (logfile) {
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+ ret = glfs_set_logging(glfs, logfile, gconf->debug);
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+ if (ret < 0) {
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+ goto out;
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+ }
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}
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ret = glfs_init(glfs);
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