Date: Thu, 14 Sep 2023 01:59:57 +0200 From: Polytropon <freebsd@edvax.de> To: Andrea Venturoli <ml@netfence.it> Cc: questions@freebsd.org Subject: Re: Mount bzip2 disk image Message-ID: <20230914015957.9f0f5782.freebsd@edvax.de> In-Reply-To: <5f5b50e2-5f0e-3e86-973c-269e7cc8726d@netfence.it> References: <d29db23f-d20a-7e03-1498-4ff02344243d@netfence.it> <96ce2d8b-f310-96bc-394c-007541401c57@fjl.co.uk> <b0e86d99-acc8-85fd-751b-8dec2fc709fe@netfence.it> <78bc91f8-665d-5ecc-4867-ba53f6291603@fjl.co.uk> <5f5b50e2-5f0e-3e86-973c-269e7cc8726d@netfence.it>
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On Wed, 13 Sep 2023 17:01:36 +0200, Andrea Venturoli wrote:
> On 9/13/23 15:28, Frank Leonhardt wrote:
>
> > The rest of the paragraph explains this would be decompressing the bzip2
> > image from tape (or other offline stream), so the actual disk space
> > would be about the same as having the bzip2 file on DASD.
>
> I'm not sure I understand what you mean...
> I have no tape.
DASD = Direct Access Storage Device, i. e., disks or SSDs,
also known as on-line storage ("D U,DASD,ONLINE", if you
wish).
Yes, I am old. ;-)
Tape is sequential access. In FreeBSD, see da* and sa* devices,
speaking the SCSI language.
> I only have internal HD storage, where the bzip2 image is and where I
> could decompress it (provided enough space would be free).
Do you have the change to temporarily add a sufficiently
big external disk, even if it's just a cheap 5 TB USB disk?
It won't be fast (as it's the speed limit of USB), but you
could then use the image file in the mentioned way of vnode
(mdconfig + mount -o ro + cp + umount), and afterwards you
have a nice big disk - a DASD - to your disposal... :-)
--
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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