Re: [DNG] backup
As an aside, I have a set of USB drives at a client location. All have
the label "archives" on the partition. I then create an fstab entry:
LABEL=archives /media/archives ext4 noauto 0 2
or something like that (I don't remember the exact entry). They swap the
drives out at will, and just before the backup begins, I try to mount
/media/archives.
The client wanted to rotate 5 drives throughout the week to back up the
backup service we provide, and it has worked well for them.
Rod
On 5/19/20 10:56 AM, william moss via Dng wrote:
> If you set the partition label for the target of a file system archive,
> then the use of findmnt eliminates the need for a special location. For
> example:
> findmnt -P -t ext4,xfs -o source,target,label
>
> Note, the file systems in the example should be set to what you use for
> your archive media.
>
> Since I back up to network attached storage, I parse the output of the
> following command to find a sub-directory of the primary mount points.
> findmnt -P -t cifs,nfs,auto -o source,target,label |& \
> while read Q
> do
> [[ "${Q}" =~ LABEL=\"([^\"]*)\" ]] &&
> LBL="${BASH_REMATCH[1]}"
> [[ "${Q}" =~ TARGET=\"([^\"]*)\" ]] &&
> TGT="${BASH_REMATCH[1]}/`hostname -s`"
> [[ "${Q}" =~ SOURCE=\"([^\"]*)\" ]] &&
> SRC="${BASH_REMATCH[1]}"
>
> [ -n "$SRC" ] || continue
> [ -n "$TGT" ] || continue
> [ -d "$TGT" ] || continue
>
> # The actions to perform are then based on the source,
> # the label (if any) and any other criteria that can be
> # found with other options to findmnt.
> ...
> done
>
> I schedule the script that does. I use a custom run-crons
> (/usr/lib/cron/run-crons) but a script in /etc/cron.d would also be a
> good choice.
>
> Rather than dmesg, try
>
> alias lsblock='lsblk -o name,label,fstype,size,type,tran -x name'
>
--
Rod Rodolico
Daily Data, Inc.
POB 140465
Dallas TX 75214-0465 US
http://dailydata.net
214.827.2170
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Re: [DNG] f2fs and beowulf: installation
On Tue, May 19, 2020 at 10:35:22PM +0200, Antony Stone wrote: > On Tuesday 19 May 2020 at 22:30:50, ael wrote: > > > I am hoping to install beowulf onto a new laptop in a week or two. > > I use f2fs on several drives with good results, so I want to > > use it on the root partition. f2fs seems the obvious choice on ssd's. > > https://howtos.davidsebek.com/debian-f2fs.html may be what you need. Thanks for that. That seems to be a workaround for the deficiences of the debian installer, and I guess that I might have to do something like that. But I was hoping that the devuan installer might be a bit better. I hope that the devuan installer already has the f2fs modules in its initramfs: despite that howto, I think that it is only the f2fs module itself that is needed. So that would be a simple lightweight change to the devuan version if it is not already there. Then the f2fs-tools,libf2fs-format4 and libf2fs5 packages need to be added to the pool. Is much else needed? I suppose that I might be able to build an installation image like that myself and see what happens. ael ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] f2fs and beowulf: installation
On Tuesday 19 May 2020 at 22:30:50, ael wrote: > I am hoping to install beowulf onto a new laptop in a week or two. > I use f2fs on several drives with good results, so I want to > use it on the root partition. f2fs seems the obvious choice on ssd's. https://howtos.davidsebek.com/debian-f2fs.html may be what you need. Antony. -- Wanted: telepath. You know where to apply. Please reply to the list; please *don't* CC me. ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
[DNG] f2fs and beowulf: installation
I am hoping to install beowulf onto a new laptop in a week or two. I use f2fs on several drives with good results, so I want to use it on the root partition. f2fs seems the obvious choice on ssd's. I have just downloaded devuan_beowulf_3.0.0_RC_desktop-amd64.iso, loop mounted it, and looked for any f2fs packages in the pool. I didn't find anything, although I only used a rather simplistic 'find' search. Does the beowulf installer support f2fs as a root partition? Perhaps I need to use the net-install approach? I see that grub has supported f2fs for over two years, so that part should be OK. ael ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] without-systemd.org not working
Quoting Hendrik Boom (hend...@topoi.pooq.com): > Specifically, it says: > > "Do you think the Red Hat model would apply equally well to other > areas of software? " > > "Red Hat's model works because of the complexity of the technology we > work with. An operating platform has a lot of moving parts, and > customers are willing to pay to be insulated from that complexity." > > "I don't think you can take one finite element - like Apache - and > make a business out of it [using our model]. You need product > complexity." > > Presumably Steve Litt's point is that Red Hat has to make the > internals complex so that there's complexity to shield the costomer > from. Steve's is a classic non-testable paranoid conspiracy hypothesis. These have had fans on a recurring basis in (among other places) Steve's native USA. https://harpers.org/archive/1964/11/the-paranoid-style-in-american-politics/ (Richard Hofstadter essay has never seemed more timely, and I don't mean in relation to Steve's theorising.) -- Cheers, Rick MoenDiaeresis: Keeping the cow out of co-worker since 700 AD. r...@linuxmafia.com McQ! (4x80) ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] When spaces aren't just spaces [Was] Has anybody else experienced Raspberry Pi breakage ?
Hello, Thanks for pointing that out :) Unfortunately I am responding via the integrated editor in the webmail. Citando marc : Hello This is a bit unrelated, but might be worth warning people about. Some editors no longer seem to be satisfied inserting plain spaces, but now deem it necessary the extra bytes . This might break small parsers which only consider ' ' and \t as a delimiter. 'cat -A' will help you find them Below is the fstab entry that you included in your mail, run through 'cat -A' and my fstab:$ '# cat /etc/fstab$ $ # M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- $ /dev/mmcblk0p1M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- /bootM-BM- M-BM- M-BM- vfatM-BM- M-BM- M-BM- defaultsM-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 0M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 2$ /dev/mmcblk0p2M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- /M-BM- M-BM- M-BM- ext4M-BM- M-BM- M-BM- defaults,noatimeM-BM- M-BM- M-BM- 0M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 1$ /dev/zram0 M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- swapM-BM- M-BM- M-BM- swapM-BM- M-BM- M-BM- pri=1M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 0M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 0'$ $ The copy &paste could bring indeed unwanted special chars.. I sould have no better, that webemail clients, usually do not comply But Again, thanks for pointing that out :) Best Regards, tuxd3v ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] Device naming: was Felker Init: was without-systemd.org not working
Quoting Jim Jackson (j...@franjam.org.uk): > My detachable backups devices have unique partitions labels and I place a > specifically named file in the root of the partition. My backup scripts > check for both and give up if they can't find both. THEN I do the dmesg > thing :-) Both really good ideas. I'm also reminded, by your mention of partition labels, of a real stumper of a problem that was described many years ago on the Silicon Valley Linux User Group mailing list: A Linux host kernel panicked and fell over any time a particular hard drive was physically attached to it during boot up, but the hard drive was well behaved and had normal, apparently valid Linux filesystems on it, as viewed on other Linux hosts or using a live CD distro. The solution was that the afflicted host had a partition with label of, say, USR_PART, and the seemingly problematic hard drive also had one with the identical label string. The booting kernel got confused and died because of the ambiguity, when it tried to parse and implement /etc/fstab. You did, of course, say _unique_ partition labels, which avoids that gentleman's quite perplexing problem. -- Cheers, Rick MoenDiaeresis: Keeping the cow out of co-worker since 700 AD. r...@linuxmafia.com McQ! (4x80) ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
[DNG] backup
If you set the partition label for the target of a file system archive,
then the use of findmnt eliminates the need for a special location. For
example:
findmnt -P -t ext4,xfs -o source,target,label
Note, the file systems in the example should be set to what you use for
your archive media.
Since I back up to network attached storage, I parse the output of the
following command to find a sub-directory of the primary mount points.
findmnt -P -t cifs,nfs,auto -o source,target,label |& \
while read Q
do
[[ "${Q}" =~ LABEL=\"([^\"]*)\" ]] &&
LBL="${BASH_REMATCH[1]}"
[[ "${Q}" =~ TARGET=\"([^\"]*)\" ]] &&
TGT="${BASH_REMATCH[1]}/`hostname -s`"
[[ "${Q}" =~ SOURCE=\"([^\"]*)\" ]] &&
SRC="${BASH_REMATCH[1]}"
[ -n "$SRC" ] || continue
[ -n "$TGT" ] || continue
[ -d "$TGT" ] || continue
# The actions to perform are then based on the source,
# the label (if any) and any other criteria that can be
# found with other options to findmnt.
...
done
I schedule the script that does. I use a custom run-crons
(/usr/lib/cron/run-crons) but a script in /etc/cron.d would also be a
good choice.
Rather than dmesg, try
alias lsblock='lsblk -o name,label,fstype,size,type,tran -x name'
--
William (Bill) Moss
billm...@acm.org
NY (USA)
Those who will not reason, are bigots,
those who cannot, are fools,
and those who dare not, are slaves.
by Lord Byron
Justice will not be served until those who are
unaffected are as outraged as those who are.
by Benjamin Franklin
Honor, justice and humanity forbid us tamely to
surrender that freedom which we received from
our gallant ancestors and which our innocent
posterity have a right to receive from us. We
cannot endure the infamy and guilt of resigning
succeeding generations to that wretchedness which
inevitably awaits them if we basely entail
hereditary bondage on them.
by Thomas Jefferson
Declaration of the Causes and Necessities of Taking up Arms
6 July 1775
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Re: [DNG] Device naming: was Felker Init: was without-systemd.org not working
On Mon, 18 May 2020, Rick Moen via Dng wrote: > (I do detachable backups to external USB hard drives, and make a point of > doing 'dmesg | tail' before mounting, to make sure it really is > /dev/sdc1 this time.) My detachable backups devices have unique partitions labels and I place a specifically named file in the root of the partition. My backup scripts check for both and give up if they can't find both. THEN I do the dmesg thing :-) Jim ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] Device naming: was Felker Init: was without-systemd.org not working
Handrik: ... > What's sg_map? > > I don't seem to have one. ... $ man sg_map ... sg_map - displays mapping between Linux sg and other SCSI devices ... $ apt-file search sg_map sg3-utils: /usr/bin/sg_map sg3-utils: /usr/bin/sg_map26 sg3-utils: /usr/share/man/man8/sg_map.8.gz sg3-utils: /usr/share/man/man8/sg_map26.8.gz votca-csg: /usr/bin/csg_map votca-csg: /usr/share/man/man1/csg_map.1.gz To get the serial number of a disk, do # sg_inq /dev/sda Regards, /Karl Hammar ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] without-systemd.org not working
> I am. I eschew Occam's Razor in favor of Litt's Razor, which can be > paraphrased "Follow the money." > > As one piece of evidence I present the words of a Redhat exec long > before systemd existed: > > http://asay.blogspot.com/2006/10/interview-with-red-hat-cto-brian.html > > Search the word "complexity" to get right to the piece of evidence that > Redhat profits from complexifying Linux. A very good illustration, thanks Steve. /D ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] When spaces aren't just spaces [Was] Has anybody else experienced Raspberry Pi breakage ?
On Tue, May 19, 2020 at 08:45:44AM +0200, Dr. Nikolaus Klepp wrote: > Anno domini 2020 Tue, 19 May 08:09:46 +0200 > marc scripsit: > > Hello > > > > This is a bit unrelated, but might be worth warning people about. Some > > editors > > no longer seem to be satisfied inserting plain spaces, but now deem it > > necessary > > the extra bytes . This might break small parsers which only consider > > ' ' and \t as a delimiter. 'cat -A' will help you find them > > > > Below is the fstab entry that you included in your mail, run through 'cat > > -A' > > > > > and my fstab:$ > > > '# cat /etc/fstab$ > > > $ > > > # M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- > > > M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- > > > M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- $ > > > /dev/mmcblk0p1M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- /bootM-BM- M-BM- > > > M-BM- vfatM-BM- M-BM- M-BM- defaultsM-BM- M-BM- M-BM- M-BM- M-BM- > > > M-BM- 0M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 2$ > > > /dev/mmcblk0p2M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- /M-BM- M-BM- M-BM- > > > ext4M-BM- M-BM- M-BM- defaults,noatimeM-BM- M-BM- M-BM- > > > 0M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 1$ > > > /dev/zram0 M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- swapM-BM- M-BM- M-BM- > > > swapM-BM- M-BM- M-BM- pri=1M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- > > > M-BM- M-BM- 0M-BM- M-BM- M-BM- M-BM- M-BM- M-BM- 0'$ > > > $ > > Which editors do this? And why would they insist on using non-breaking spaces? -- hendrik > > Nik > > > > > regards > > > > marc > > > > > > ___ > > Dng mailing list > > Dng@lists.dyne.org > > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng > > > > > > -- > Please do not email me anything that you are not comfortable also sharing > with the NSA, CIA ... > ___ > Dng mailing list > Dng@lists.dyne.org > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] without-systemd.org not working
On Mon, May 18, 2020 at 09:39:11PM -0400, Steve Litt wrote: > On Mon, 18 May 2020 08:57:39 -0700 > Ian Zimmerman wrote: > > > On 2020-05-18 16:42, Didier Kryn wrote: > > > > > In particular by porting Window$ on top of Systemd-Gnu-Linux, just > > > like MacOS lives on top of FreeBSD and makes big profit. > > > > How would that work from the legal POV? Linux is still GPL, pretty > > much for this very reason. > > > > I do believe that systemd was meant to be more than init from the > > start, but I'm not going as far as Didier. > > I am. I eschew Occam's Razor in favor of Litt's Razor, which can be > paraphrased "Follow the money." > > As one piece of evidence I present the words of a Redhat exec long > before systemd existed: > > http://asay.blogspot.com/2006/10/interview-with-red-hat-cto-brian.html > > Search the word "complexity" to get right to the piece of evidence that > Redhat profits from complexifying Linux. > Specifically, it says: "Do you think the Red Hat model would apply equally well to other areas of software? " "Red Hat's model works because of the complexity of the technology we work with. An operating platform has a lot of moving parts, and customers are willing to pay to be insulated from that complexity. " "I don't think you can take one finite element - like Apache - and make a business out of it [using our model]. You need product complexity. Presumably Steve Litt's point is that Red Hat has to make the internals complex so that there's complexity to shield the costomer from. -- hendrik > SteveT > > Steve Litt > May 2020 featured book: Troubleshooting Techniques > of the Successful Technologist > http://www.troubleshooters.com/techniques > ___ > Dng mailing list > Dng@lists.dyne.org > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] Device naming: was Felker Init: was without-systemd.org not working
On Tue, May 19, 2020 at 12:54:23AM +0200, k...@aspodata.se wrote: > Rick: > > Quoting Ian Zimmerman (i...@very.loosely.org): > ... > > > it. If only I had listened to my nagging inner voice and looked at > > > /dev/disk/by-id first, I'd have been okay. > > I'm a lot more concerned about servers, personally, and am not going to > > permit overengineered software on my server just because someone > > couldn't bother looking at 'dmesg | tail' before running dd against an > > SD card. > ... > > There is more than one way to do it: > sg_map -x -i What's sg_map? I don't seem to have one. -- hendrik > > Regards, > /Karl Hammar > > ___ > Dng mailing list > Dng@lists.dyne.org > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] without-systemd.org not working
Apologies for following up on my own post - just an afterthought. When I originally encountered systemd, the word was that it was so pervasive that it couldn't be removed (obviously, now we know different ;) ) Given the alleged non-optionality of systemd, I started to wonder about some kind of an init system wrapper (or even jail) - an abstraction layer which would sit between the init subsystem and the main system, and sanitise and homogenise interactions between the two; init systems, including systemd, could be plugged and unplugged into the top surface as desired; the abstraction layer would manage commands and responses (including lying to the init subsystem if the latter tried to do something dangerous or antisocial). I know - first reaction is to recoil in horror and disgust at the very thought (adding another layer of complexity to something which is already overcomplex). But there's something tantalising about it. On Mon, 2020-05-18 at 12:04 +0100, Peter Duffy wrote: > One of the things which always baffles me about systemd was that right > from the word go, there was something which would have nipped in the bud > all the controversy, pain, recriminations, etc. etc. Make systemd > optional (so that, for example, it could be selected at install time > from a range of available init systems, and later, if desired, removed > and reinstalled). > ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] without-systemd.org not working
Mon, 18 May 2020 08:57:39 -0700 - Ian Zimmerman : > On 2020-05-18 16:42, Didier Kryn wrote: > > > In particular by porting Window$ on top of Systemd-Gnu-Linux, just > > like MacOS lives on top of FreeBSD and makes big profit. > > How would that work from the legal POV? Linux is still GPL, pretty much > for this very reason. and herein lies the original sin... the GPL (which is not one license but a set of licenses) has three main flaws: - the LGPL license, which has allowed GNU/Linux environmental pollution over time - the lack of a non-commercial mandatory clause in the GPLs - the mistake of confusing 4 simple legal rights with freedom (which is something much broader I think), leading people to remain confined within technical, legal and - above all - economic aspects just my humble opinion Regards -- al3xu5 Say NO to copyright, patents, trademarks and any industrial design restrictions. Public GPG/PGP key ID: 4096 bit RSA key F94CFE23 Fingerprint: 59C6 9DC7 CD4B CF2F A190 E3DE 69C5 977B F94C FE23 pgpw0YTRdYopN.pgp Description: Firma digitale OpenPGP ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] Device naming: was Felker Init: was without-systemd.org not working
Quoting Steve Litt (sl...@troubleshooters.com): > Substitute the word "needlessly complex" for "overengineered" and I > don't like it either. But 1), I don't think you'd get anywhere near > universal agreement that by_path, by_id, etc is either overengineered > or needlessly complex, [...] One interesting fact about applying _local policy_ to system administration is that universal agreement (i.e., vetted by others elsewhere) is neither required nor useful. > and 2) ANYBODY can make a typo, completely > unrelated to "not bothering to look at dmesg | tail". That's a risk with almost _any_ invocation using root authority of inherently dangerous tools like /bin/dd . The earliest and most important lesson for all junior sysadmins is 'If you break it, you buy it.' > I think a more relevant constructive criticism would have been "where > were the backups?". And 'Be incredibly sure of your syntax before running /bin/dd as root.' ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
