From: Leonid Krivoshein <klark.devel@gmail.com>
To: make-initrd@lists.altlinux.org
Subject: Re: [make-initrd] [PATCH v2 00/11] Improve support for atomic actions
Date: Tue, 20 Oct 2026 22:04:56 +0300
Message-ID: <bf06d3f1-55d0-4eeb-af71-f48706be8e30@gmail.com> (raw)
In-Reply-To: <ateB1ChMNdgCs7xk@example.org>
On 10/20/26 5:59 PM, Alexey Gladkov wrote:
> On Mon, Oct 19, 2026 at 10:30:38PM +0300, Leonid Krivoshein wrote:
>> Привет!
>>
>>
>> On 10/19/26 12:57 PM, Alexey Gladkov wrote:
>>> Нашлось ещё ряд мест, где потенциально могут возникнуть проблемы из-за
>>> параллельного доступа к файлам на чтение/запись.
>>>
>>> Я добавил новый API не только для flock-блокировок, но и для более атомарного
>>> обновления файлов.
>>>
>>> Вроде исправил всё что нашёл.
>>>
>>
>> Грандиозно! Выходит, иногда стоит задавать тут такие вопросы.
>
> Всегда нужно было делать.
>
> Других вопросов нет ? Тогда я их завтра применяю.
>
Было бы здорово иметь одно место в документации, где будут перечислены
все файлы, доступ к которым требует блокировок. Например, из этих
коммитов я узнал, что следует блокировать доступ на запись в
/.initrd/initenv. Инклюдить его можно по-прежнему без блокировки
благодаря атомарному обновлению, если я правильно понял.
Другой момент с этими коммитами не связан, но давно напрашивался. В
v2.36.0 была добавлена rootdelay_reset_timer(), здесь проскочило её
усовершенствование. На время диалогов ввода и на время заведомо
длительных или непредсказуемых по времени выполнения операций хотелось
бы не просто приостанавливать отчёт таймера rootdelay, но и возобновлять
его отсчёт, а не просто сбрасывать. Сейчас я его просто сбрасываю, так
тоже работает, но это конечно увеличивает суммарный (фактический) rootdelay.
>>
>>>
>>> Alexey Gladkov (10):
>>> runtime: Fix console lock shadowing by /dev mount
>>> runtime: Avoid leaking lock descriptor 90 to child processes
>>> runtime: Replace /.initrd/initenv locking with atomic file update
>>> runtime: Centralize file and console locking helpers
>>> create-rootfs: Require bash 4.1 or newer for initramfs
>>> network: Share DHCP hook lock between IPv4 and IPv6 on the same
>>> interface
>>> luks: Serialize /etc/luks.keys updates and avoid duplicate entries
>>> runtime: Synchronize concurrent /etc/fstab access with shared and
>>> exclusive locks
>>> runtime: Update rootdelay deadline and failure message atomically
>>> runtime: Centralize atomic file replacement in write_atomic helper
>>>
>>> Egor Shestakov (1):
>>> runtime: Fix a lock leak in rootdelayd
>>>
>>> .../uevent/handlers/btrfs-member/100-timeout | 4 +-
>>> .../data/lib/uevent/handlers/040-mountdev | 19 +--
>>> .../luks/data/lib/uevent/filters/lukskeys | 49 +++---
>>> .../luks/data/lib/uevent/handlers/085-luks | 33 ++--
>>> .../network/data/bin/network-sh-functions | 1 +
>>> .../network/data/etc/rc.d/init.d/network-up | 3 -
>>> features/network/data/lib/network/hostname | 18 ++-
>>> features/network/data/lib/network/resolvconf | 84 +++++-----
>>> .../network/data/lib/network/udhcpc4.script | 90 +++++------
>>> features/runtime/data/bin/initrd-sh-functions | 123 ++++++++++++++-
>>> features/runtime/data/etc/rc.d/init.d/cmdline | 6 +-
>>> features/runtime/data/etc/rc.d/init.d/fstab | 4 +-
>>> features/runtime/data/etc/rc.d/rc | 148 +++++++++---------
>>> features/runtime/data/init | 2 +
>>> .../data/lib/initrd/post/fstab/mountsrc | 61 ++++----
>>> .../runtime/data/lib/uevent/filters/mountdev | 71 +++++----
>>> .../lib/uevent/handlers/mount/900-localdev | 39 +++--
>>> features/runtime/data/sbin/rootdelayd | 74 ++++-----
>>> .../data/lib/uevent/handlers/040-sshfsroot | 26 ++-
>>> features/zfs/data/lib/initrd/post/fstab/zfs | 105 +++++++------
>>> features/zfs/data/sbin/ueventd-zfs | 21 ++-
>>> .../tests/ts0044-member-timeout-queue-api/run | 2 +
>>> tools/create-rootfs | 2 +
>>> 23 files changed, 566 insertions(+), 419 deletions(-)
>>>
>>
>> --
>> WBR, Leonid Krivoshein.
>>
>> _______________________________________________
>> Make-initrd mailing list
>> Make-initrd@lists.altlinux.org
>> https://lists.altlinux.org/mailman/listinfo/make-initrd
>
--
WBR, Leonid Krivoshein.
next prev parent reply other threads:[~2026-10-20 19:04 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-12 22:42 [make-initrd] Параметр rdshell Leonid Krivoshein
2026-10-14 10:04 ` Egor Shestakov
2026-10-14 16:01 ` Leonid Krivoshein
2026-10-15 14:48 ` [make-initrd] [RFC PATCH] runtime: fix a suspended boot after rdshell Egor Shestakov
2026-10-16 10:20 ` Alexey Gladkov
2026-10-16 13:39 ` Egor Shestakov
2026-10-16 14:09 ` Alexey Gladkov
2026-10-16 14:13 ` Egor Shestakov
2026-10-16 14:11 ` Egor Shestakov
2026-10-19 10:22 ` [make-initrd] Параметр rdshell Alexey Gladkov
2026-10-19 12:51 ` [make-initrd] kmscon (was: Параметр rdshell) Egor Shestakov
2026-10-19 13:38 ` Alexey Gladkov
2026-10-19 15:09 ` Egor Shestakov
2026-10-19 16:14 ` Alexey Gladkov
2026-10-16 12:06 ` [make-initrd] [PATCH 0/2] runtime: Fix console locking Alexey Gladkov
2026-10-16 12:06 ` [make-initrd] [PATCH 1/2] runtime: Fix a lock leak in rootdelayd Alexey Gladkov
2026-10-16 12:06 ` [make-initrd] [PATCH 2/2] runtime: Fix console lock shadowing by /dev mount Alexey Gladkov
2026-10-16 20:02 ` Leonid Krivoshein
2026-10-17 9:45 ` Alexey Gladkov
2026-10-17 16:19 ` Leonid Krivoshein
2026-10-17 16:41 ` Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 00/11] Improve support for atomic actions Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 01/11] runtime: Fix a lock leak in rootdelayd Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 02/11] runtime: Fix console lock shadowing by /dev mount Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 03/11] runtime: Avoid leaking lock descriptor 90 to child processes Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 04/11] runtime: Replace /.initrd/initenv locking with atomic file update Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 05/11] runtime: Centralize file and console locking helpers Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 06/11] create-rootfs: Require bash 4.1 or newer for initramfs Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 07/11] network: Share DHCP hook lock between IPv4 and IPv6 on the same interface Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 08/11] luks: Serialize /etc/luks.keys updates and avoid duplicate entries Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 09/11] runtime: Synchronize concurrent /etc/fstab access with shared and exclusive locks Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 10/11] runtime: Update rootdelay deadline and failure message atomically Alexey Gladkov
2026-10-19 9:57 ` [make-initrd] [PATCH v2 11/11] runtime: Centralize atomic file replacement in write_atomic helper Alexey Gladkov
2026-10-19 19:30 ` [make-initrd] [PATCH v2 00/11] Improve support for atomic actions Leonid Krivoshein
2026-10-20 14:59 ` Alexey Gladkov
2026-10-20 19:04 ` Leonid Krivoshein [this message]
2026-10-20 19:23 ` [make-initrd] Уточнение по rootdelay_unpause() Leonid Krivoshein
2026-10-21 10:10 ` [make-initrd] [PATCH] runtime: Freeze rootdelay countdown while paused Alexey Gladkov
2026-10-21 7:18 ` [make-initrd] [PATCH v2 00/11] Improve support for atomic actions Alexey Gladkov
2026-10-21 8:50 ` Leonid Krivoshein
2026-10-21 10:18 ` Alexey Gladkov
2026-10-21 18:52 ` Leonid Krivoshein
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