summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorSamuel Thibault <samuel.thibault@ens-lyon.org>2026-03-10 14:41:29 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2026-03-10 14:42:09 +0100
commit364d2fea468d429dd3f08a9acc7c1dc5ad34da25 (patch)
tree2f39e7b95d128832362c6cdf83d4fc6a1b65b94d
parent058e2dcc2031afba35524d89a89aa157463b113e (diff)
make disk limitation link to using rumpdisk page
-rw-r--r--faq/2_gib_partition_limit.mdwn6
-rw-r--r--hurd/rump/rumpdisk.mdwn2
-rw-r--r--open_issues/running_rump_for_slash.mdwn72
3 files changed, 4 insertions, 76 deletions
diff --git a/faq/2_gib_partition_limit.mdwn b/faq/2_gib_partition_limit.mdwn
index 654379a3..aece70b4 100644
--- a/faq/2_gib_partition_limit.mdwn
+++ b/faq/2_gib_partition_limit.mdwn
@@ -11,12 +11,14 @@ License|/fdl]]."]]"""]]
[[!tag faq/support]]
-[[!meta title="Is there still a 2 GiB ext2fs disk partition limit?"]]
+[[!meta title="Is there still a 2 GiB / 128GiB ext2fs disk partition limit?"]]
-The 2 GiB ext2fs limit has been removed.
+The 2 GiB ext2fs limit has been removed since long.
IDE disk drivers (`hd*`) however currently do not support more than 2^28 sectors, i.e. 128GiB.
The gnumach AHCI disk driver (`sd*`) and rumpkernel drivers (`wd*`) support up to 2^48 sectors, i.e. 128PiB, but the device interface supports only 2^32 sectors, i.e. 2TiB.
+To use disks bigger than 128GiB you can either switch your disk to AHCI (BIOS or virtualization) configuration, or switch to [[using the rumpkernel driver|/hurd/rump/rumpdisk]]
+
You can have a bigger disk, you just should not put disk partitions beyond these limits for the drivers to be able to read from them.
diff --git a/hurd/rump/rumpdisk.mdwn b/hurd/rump/rumpdisk.mdwn
index bb8bcdb1..c7764ca7 100644
--- a/hurd/rump/rumpdisk.mdwn
+++ b/hurd/rump/rumpdisk.mdwn
@@ -59,5 +59,3 @@ rumpdisk is normally already set up on `/dev/rumpdisk`.
$ showtrans /dev/rumpdisk
/hurd/rumpdisk
-
-[[!inline pages=open_issues/running_rump_for_slash raw=yes feeds=no]]
diff --git a/open_issues/running_rump_for_slash.mdwn b/open_issues/running_rump_for_slash.mdwn
deleted file mode 100644
index 0740993e..00000000
--- a/open_issues/running_rump_for_slash.mdwn
+++ /dev/null
@@ -1,72 +0,0 @@
-[[!meta copyright="Copyright © 2019 Free Software
-Foundation, Inc."]]
-
-[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
-id="license" text="Permission is granted to copy, distribute and/or modify this
-document under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no Invariant
-Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
-is included in the section entitled [[GNU Free Documentation
-License|/fdl]]."]]"""]]
-
-[[!tag open_issue_hurd]]
-
-## Samuel's [[email|https://lists.gnu.org/archive/html/bug-hurd/2019-12/msg00002.html]]
-
-I have been thinking about how to get rump running for the / filesystem.
-
-Looking at how things go between ext2fs and exec: in grub.cfg we have
-roughly:
-
- module ext2fs --exec-server-task='${exec-task}' '$(task-create)' '$(task-resume)'
- module exec '$(exec-task=task-create)'
-
-i.e. the kernel is told to create two tasks, to pass a reference to
-the exec task to the ext2fs task, and to let only the ext2fs task to
-run. What happens then is in `diskfs_start_bootstrap`, which calls
-`start_execserver`, which uses `task_set_special_port` to set the
-`TASK_BOOTSTRAP_PORT` special port to a send right to ext2fs, and resumes
-the exec task. I.e. basically ext2fs tells exec where it is so that exec
-can start the userland with `/` available.
-
-I'm thinking that the same can be used for the rump translator,
-something like:
-
- module rump --fs-server-task='${fs-task}' '$(task-create)' '$(task-resume)'
- module ext2fs --exec-server-task='${exec-task}' '$(fs-task=task-create)'
- module exec '$(exec-task=task-create)'
-
-and we'd make rump's initialization use `task_set_special_port` to set
-the `TASK_BOOTSTRAP_PORT` special port of ext2fs to a send right to rump,
-and resume it. When ext2fs sees that this port is set, it would use it
-instead of the gnumach-provided `_hurd_device_master` port to open
-devices.
-
-And we can nest this yet more for the pci-arbiter:
-
- module pci-arbiter --disk-server-task='${disk-task}' '$(task-create)' '$(task-resume)'
- module rump --fs-server-task='${fs-task}' '$(disk-task=task-create)'
- module ext2fs --exec-server-task='${exec-task}' '$(fs-task=task-create)'
- module exec '$(exec-task=task-create)'
-
-and we'd make `pci-arbiter`'s initialization use `task_set_special_port`
-to set the `TASK_BOOTSTRAP_PORT` special port of rump to a send right to
-pci-arbiter and resume it. When `libpciaccess` sees that this port is set,
-it would use it instead of looking up `/server/bus/pci`.
-
-## Damien's [[follow up email|https://lists.gnu.org/archive/html/bug-hurd/2020-04/msg00032.html]]
-
-In my own words, the changes that are needed:
-
-1. libpciaccess needs to check if pci-arbiter's `task_bootstrap_port` is set
-and if it is, use it instead of `/servers/bus/pci`
-
-2. pci-arbiter needs to call `task_set_special_port` on rump's `TASK_BOOTSTRAP_PORT`
-if `--disk-server-task` flag is detected.
-
-3. rumpdisk needs to call `task_set_special_port` on ext2fs's `TASK_BOOTSTRAP_PORT`
-if `--fs-server-task` flag is detected.
-
-4. ext2fs will just work in this configuration
-
-