MS
Кто из ОС так делает и потом как единый вольюм?
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2019 July 23
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Кто из ОС так делает и потом как единый вольюм?
точнее можно ? непонял кто не умеет 2 диска в один volume делать ?
AS
Причем тут прошивки?
Прошивки - это ОС, речь о подходе и быстром переключении между релизами ОС. Solaris boot environments on ZFS, AIX alt_boot - технологии, которые позволяют загружаться в нужную версию ОС, обновлять её в фоне. Детали реализации в каждом случае свои.
MS
Прошивки - это ОС, речь о подходе и быстром переключении между релизами ОС. Solaris boot environments on ZFS, AIX alt_boot - технологии, которые позволяют загружаться в нужную версию ОС, обновлять её в фоне. Детали реализации в каждом случае свои.
3-й раз повторяю вопрос
MS
какая из ОС умеет делать отдельный r/o контейнер и транслировать это как единый диск для пользователя
MS
солярис / ZFS - нет, не умеют
MS
AIX - нет, не умеет
MS
точнее можно ? непонял кто не умеет 2 диска в один volume делать ?
ты вообще читаешь что тебе пишут?
MS
я ссылки давал - прочитай
MS
Фраза "a new type of bi-directional symbolic link named a firmlink, which enables the two boot volumes to integrate and function as one" на мысли не наводит?
AS
Фраза "a new type of bi-directional symbolic link named a firmlink, which enables the two boot volumes to integrate and function as one" на мысли не наводит?
Это детали реализации. which enables the two boot volumes to integrate and function as one - так умеют делать и Solaris и AIX
MS
Это детали реализации. which enables the two boot volumes to integrate and function as one - так умеют делать и Solaris и AIX
нет
MS
apple ввели новую концепцию - firmlink
MS
покажи мне на ZFS
MS
а про "детали реализации" - это любимая отмазка у народа
MS
дистанция может быть от "полное гуано" до "прекрасно"
MS
сделать отдельный диск загрузочный - много ума не надо
MS
Building bonds with firmlinks
To pull off the illusion of a single, unified volume, Apple added support to APFS for firmlinks. Like the name implies, a firmlink lies conceptually between a soft link and a hard link. That probably doesn't make them any more clear though (even for people familiar with soft and hard links!). A firmlink is described by Apple as a "bi-directional wormhole" between two filesystems. Let's take a look at the "Users" folder as an example – the Users folder at the root level of the System volume is actually a firmlink that points to the Users folder at the root level of the Data volume. If you attempt to navigate to the /Users folder on the System volume, you're actually going to see the content of the /Users folder on the Data volume. Likewise, suppose you're looking at a folder on your Desktop (so you're looking at the contents of the Data volume) and then you navigate upwards several levels. When you get to the parent of the "Users" folder, you're no longer looking at the Data volume, rather that firmlink has transported you back to the root level of the System volume.
There are about a couple dozen firmlinks on macOS Catalina that link various folders on the System volume to writable counterparts on the Data volume. If you're curious about these, you can find a complete list of firmlinks at /usr/share/firmlinks on your startup disk.
To pull off the illusion of a single, unified volume, Apple added support to APFS for firmlinks. Like the name implies, a firmlink lies conceptually between a soft link and a hard link. That probably doesn't make them any more clear though (even for people familiar with soft and hard links!). A firmlink is described by Apple as a "bi-directional wormhole" between two filesystems. Let's take a look at the "Users" folder as an example – the Users folder at the root level of the System volume is actually a firmlink that points to the Users folder at the root level of the Data volume. If you attempt to navigate to the /Users folder on the System volume, you're actually going to see the content of the /Users folder on the Data volume. Likewise, suppose you're looking at a folder on your Desktop (so you're looking at the contents of the Data volume) and then you navigate upwards several levels. When you get to the parent of the "Users" folder, you're no longer looking at the Data volume, rather that firmlink has transported you back to the root level of the System volume.
There are about a couple dozen firmlinks on macOS Catalina that link various folders on the System volume to writable counterparts on the Data volume. If you're curious about these, you can find a complete list of firmlinks at /usr/share/firmlinks on your startup disk.
MS
Этого НЕТ ни на ZFS ни на AIX
MS
А кому-то просто похоже лень вникать в документацию 🙂