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Property:ubifs
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Linux-Filesystem
| Filesystem: | ubifs - type Fsys | Wiki | Freetz | IPPF | whmf | AVM | Web |
| Location: | System >> Linux-Filesystems - Origin: Linux | ||||||
| Filesys -> Mountpoint: | /dev/ubi0_<num>->/mnt/tarplugin, /dev/ubi0_<num>->/var/media/ftp, /dev/ubi0_<num>->/var/update | ||||||
| Properties: | Firmware: 6.80 - 7.90 | ||||||
| Function: | Filesystem running on top of the UBI volume manager. | ||||||
Goto: Dependencies - Model-Matrix - Missing Supportdata - SMW-Browser
Details
ubifs is a filesystem running on top of the UBI volume manager.
It is used in FRITZ!OS to mount read / write volumes like the avm_userdata volume.
7520 fw 7.29:
avm_userdata is mounted to /var/media/ftp using ubifs:
root@fritz:/var/mod/root# mount | grep ubifs /dev/ubi0_3 on /var/media/ftp type ubifs (rw,sync,relatime)
ubifs] creates a background thread for each mounted partition:
root@fritz:/var/mod/root# ps | grep ubifs 1789 root 0 SW [ubifs_bgt0_3]
An UBI volume is a logical part of the ubi partition, which is attached at boot time to the UBI manager:.
root@fritz:/var/mod/root# dmesg | grep ubi | head -n 3 [ 1.779041] 0x000001300000-0x000008000000 : "ubi" [ 1.893466] [mtd_add_handler] UBI on MTD ubi [ 4.303419] ubi0: attaching mtd4
The UBI manager creates the device ubi0 for the attached mtd partition, and ubi0_0++ for each volume on it.
Let's see all volumes:
root@fritz1:/var/mod/root# ubinfo -a | grep Name Name: avm_filesys_0 Name: avm_filesys_1 Name: avm_config Name: avm_userdata
The raw size of the device ubi0_3 is 12.4 MB, this would be what dd could read from it:
root@fritz1:/var/mod/root# ubinfo -d 0 -N avm_userdata Volume ID: 3 (on ubi0) Type: dynamic Alignment: 1 Size: 103 LEBs (13078528 bytes, 12.4 MiB) State: OK Name: avm_userdata Character device major/minor: 245:4
The bootlog shows this raw size results in 11 MB filesystem, nearly 1 MB journal and 248 kB loss:
root@fritz:/var/mod/root# dmesg | grep 'FS size' [ 18.809300] UBIFS (ubi0:3): FS size: 11808768 bytes (11 MiB, 93 LEBs), journal size 1015809 bytes (0 MiB, 6 LEBs)
The size usable by the system is even smaller - 9.7 MB which is 78% of the raw size:
root@fritz1:/var/mod/root# df -h | grep ubi /dev/ubi0_3 9.7M 1.4M 7.8M 15% /var/media/ftp root@fritz1:/var/mod/root# df | grep ubi /dev/ubi0_3 9976 1416 8016 15% /var/media/ftp
Dependencies
Daily updated index of all dependencies of this filesystem. Last update: GMT.
A * in the Mod column marks info from Supportdata-Probes, which will always stay incomplete.
A ** in the Mod column marks info from Supportdata2 probes, which by their nature will stay way more incomplete.
A - in the Mod column marks manual research, the Firmware then shows where the item occurs, not the Relation.
| Relation | Typ | Object | Mod | Firmware | Info | Origin |
|---|---|---|---|---|---|---|
| 0 dependencies for this filesystem | ||||||
Model-Matrix
Daily updated index of the presence, path and size of this filesystem for each model. Last update: 2024-04-18 06:30 GMT.
Showing all models using this filesystem. Click any column header (click-wait-click) to sort the list by the respective data.
The (main/scrpn/boot/arm/prx/atom) label in the Model column shows which CPU is meant for models with multiple Linux instances.
Note that this list comes from Supportdata-Probes, which can have arbitrary settings and come from different firmware versions.
It doesn't say much if a model is not listed here. It may be a missing supportdata file or just a disabled feature.
| Model | Firmware | Filesys -> Mountpoint | Options |
|---|---|---|---|
| FRITZ!Box 6850 LTE | 7.21 | /dev/ubi0_<num>->/mnt/tarplugin, /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 6850 5G | 7.25 - 7.30 | /dev/ubi0_<num>->/mnt/tarplugin, /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 6890 LTE v1 | 6.98 - 7.28 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 6890 LTE v2 | 7.12 - 7.51 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7510 | 7.29 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7520 | 7.03 - 7.29 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7520 v2 (arm) | 7.29 - 7.30 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7530 | 7.01 - 7.57 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7530 AX | 7.20 - 7.39 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime, rw,sync,noexec,relatime,assert=read-only,ubi=0,vol=1 |
| FRITZ!Box 7560 | 6.80 - 7.29 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime, rw,sync,relatime |
| FRITZ!Box 7580 | 6.81 - 7.21 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime, rw,sync,relatime |
| FRITZ!Box 7581 | 6.85 - 7.17 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime, rw,sync,relatime |
| FRITZ!Box 7582 | 6.98 - 7.15 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7583 | 7.08 - 7.29 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7583 VDSL | 7.21 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7590 | 6.90 - 7.90 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime, rw,sync,relatime |
| FRITZ!Box 7590 AX | 7.25 - 7.80 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Box 7590 AX v2 | 7.31 | /dev/ubi0_<num>->/var/media/ftp | rw,sync,noexec,relatime |
| FRITZ!Smart Gateway | 7.50 - 7.57 | /dev/ubi0_<num>->/var/update | rw,noexec,relatime |
| 19 models use this filesystem | |||
Missing Supportdata
The data in this article is incomplete due to missing Supportdata-Probes for the models listed below.
If you own any of these models and would like to help then please get in touch.
