struct disk_sectoralign {
/* First aligned sector number. */
uint32_t dsa_firstaligned;
/* Number of sectors per aligned unit. */
uint32_t dsa_alignment;
};
- Teach wd(4) to get it from ATA.
- Teach cgd(4) to pass it through from the underlying disk.
- Teach dk(4) to pass it through with adjustments.
- Teach zpool (zfs) to take advantage of it.
=> XXX zpool doesn't seem to understand when the vdev's starting
sector is misaligned.
Missing:
- ccd(4) and raidframe(4) support -- these should support _using_
DIOCGSECTORALIGN to decide where to start putting ccd or raid
stripes on disk, and these should perhaps _implement_
DIOCGSECTORALIGN by reporting the stripe/interleave factor.
- sd(4) support -- I don't know any obvious way to get it from SCSI,
but if any SCSI wizards know better than I, please feel free to
teach sd(4) about it!
- any ld(4) attachments -- might be worth teaching the ld drivers for
nvme and various raid controllers to get the aligned sector size
There's some duplicate logic here for now. I'm doing it this way,
rather than gathering the logic into a new disklabel_sectoralign
function or something, so that this change is limited to adding a new
ioctl, without any new kernel symbols, in order to make it easy to
pull up to netbsd-9 without worrying about the module ABI.
Detected by UBSan and already fixed upstream.
Cherry-pick:
From aa0218d6a12814fac50b287214f9f3b0b99e11b1 Mon Sep 17 00:00:00 2001
From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Tue, 7 Jan 2014 23:24:37 +0100
Subject: [PATCH] Fix nvlist 'Bus Error' for Sparc
The mis-aligned memory accesses in nvpair_native_embedded() and
nvpair_native_embedded_array() will cause a 'Bus Error' for
architectures such as Sparc which not fully byte addressible.
To avoid this issue care is taken to avoid dereferencing the
potentially mis-aligned packed nvlist_t.
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: marku89 <mar42@kola.li>
Issue #1700
This is needed, among other things, to swap on zvols.
Attempting to swap on zvols currently deadlocks but that's a separate
issue that needs to be fixed too!
Cherry-pick upstream patch:
From 2cfda000bc5159d46fd8ead7d1bd3ea1f66f7948 Mon Sep 17 00:00:00 2001
From: Martin Matuska <martin@matuska.org>
Date: Thu, 27 Feb 2020 01:54:19 +0100
Subject: [PATCH] XAR reader: initialize file_queue with 0 and memcpy() if
allocated only
Fixes#1338
- Change the lock on uvm_object, vm_amap and vm_anon to be a RW lock.
- Break v_interlock and vmobjlock apart. v_interlock remains a mutex.
- Do partial PV list locking in the x86 pmap. Others to follow later.
with upstream to merge all our changes and this includes many other
fixes including new operator support etc. The change to pass an
extra "isnew" argument to open was not preserved as none of the
tests supplied with the PR fail.
This also adds the testsuite and all the bugs fixed since then.
