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From: Hamish Moffatt <hamish@cloud.net.au>
To: linux-mtd@lists.infradead.org
Subject: can't mount ubifs on volume smaller than 265 LEBs/32MiB
Date: Fri, 4 Apr 2008 15:12:52 +1100	[thread overview]
Message-ID: <20080404041251.GA2752@cloud.net.au> (raw)

I need a ubifs on a small volume (around 16MiB or less) but I've found
that I can't get the volume to mount if it's that small.

With a LEB size of 126kb, any file system < 265 LEBs won't mount,
failing in validate_sb.

# ubimkvol /dev/ubi0 -N config -S 264
Volume ID 2, size 264 LEBs (34062336 bytes, 32.5 MiB), LEB size 129024 bytes (126.0 KiB), dynamic, name "config", alignment 1
# mount /rw
mount: mounting ubi0:config on /rw failed: Invalid argument

# dmesg
[...]
[ 1191.360000] UBIFS error (pid 2804): validate_sb: bad superblock

# ubirmvol /dev/ubi0 -n 2
# ubimkvol /dev/ubi0 -N config -S 265
Volume ID 2, size 265 LEBs (34191360 bytes, 32.6 MiB), LEB size 129024 bytes (126.0 KiB), dynamic, name "config", alignment 1
# mount /rw

My ubifs is about 1 week old from git.

Thanks,
Hamish
-- 
Hamish Moffatt VK3SB <hamish@debian.org> <hamish@cloud.net.au>

             reply	other threads:[~2008-04-04  4:13 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-04  4:12 Hamish Moffatt [this message]
2008-04-04  5:06 ` can't mount ubifs on volume smaller than 265 LEBs/32MiB Artem Bityutskiy
2008-04-04  6:48   ` Artem Bityutskiy
2008-04-07  1:31     ` Hamish Moffatt
2008-04-04  8:48   ` Artem Bityutskiy
2008-04-04  5:25 ` Artem Bityutskiy

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