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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.



  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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