From: Zan Lynx <zlynx@acm.org>
To: Jason Price <japrice@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Fwd: show label for swap partition.
Date: Mon, 28 Jan 2008 20:10:42 +0000 [thread overview]
Message-ID: <1201551042.9135.5.camel@localhost> (raw)
In-Reply-To: <83f15e30801281158s36b0da3el210f5a97b0348ea3@mail.gmail.com>
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On Mon, 2008-01-28 at 14:58 -0500, Jason Price wrote:
> I apologize if this is the wrong forum. Please CC me on replies.
>
> A admin accidentally deleted the swap line from the fstab file. We
> mount the swap filesystem via labels. However, there seems to be no
> way to list the label on an existing swap partition, via the command
> line swap tools (mkswap, swapon/off, etc)
>
> Is this blindness on my part, or should there be an analog to e2label
> for swap partitions?
There's this cheesy way to get it:
# dd if=swapfile bs=4k count=1 | xxd -a
1+0 records in
1+0 records out
4096 bytes (4.1 kB) copied, 6.2589e-05 s, 65.4 MB/s
0000000: 0000 0000 0000 0000 0000 0000 0000 0000 ................
*
0000400: 0100 0000 ffff 0000 0000 0000 f209 fce3 ................
0000410: 7bc9 486d ac86 5d63 af25 3c99 466c 6173 {.Hm..]c.%<.Flas
0000420: 6853 7761 7000 0000 0000 0000 0000 0000 hSwap...........
0000430: 0000 0000 0000 0000 0000 0000 0000 0000 ................
*
0000ff0: 0000 0000 0000 5357 4150 5350 4143 4532 ......SWAPSPACE2
You can see it is marked as SWAPSPACE2. The label is FlashSwap. Looks
like it appears at offset 0x41c.
--
Zan Lynx <zlynx@acm.org>
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next prev parent reply other threads:[~2008-01-28 20:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <83f15e30801281151w21466ef9m82dc50ab09dc390f@mail.gmail.com>
[not found] ` <83f15e30801281156od91c2a8p3ec439cb16232386@mail.gmail.com>
2008-01-28 19:58 ` Fwd: show label for swap partition Jason Price
2008-01-28 20:10 ` Zan Lynx [this message]
2008-01-28 20:53 ` Jan Engelhardt
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