Re: [DNG] Fake RAID
Le 10/03/2022 à 18:52, Hendrik Boom a écrit : On the other hand, mdadm also is not a piece of cake but I can find my way with it and I have developped a graphics monitoring tool for it, actually a little web server displaying the status of all the host's md RAIDs. That looks useful. I already have a web server. Is it possible to easily configure this thing so it provides content to an existing web server? Diskweb is a minimal web server providing two tables: - the status of md RAID devices - the occupancy of mounted filesystems - an index file containing links to the 2 above. If you want to aglomerate contents from various web services, I recommend installing Nginx. Nginx is a very nice web server and reverse-proxy. It is relatively easy to configure and is designed to be the front-end to other servers, wether http, https, cgi-bin and fcgi-bin. One possible role is as an https front-end merging data from http or fcgi-bin servers either local or in LAN. A few years ago I set up such a service in which one of the pages was merging RAID status tables from 5 diskweb servers in the LAN. I think it makes sense to separate raw content production (like diskweb does) and polished presentation. -- Didier ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] Fake RAID
On Wed, Mar 09, 2022 at 07:18:13PM +0100, Didier Kryn wrote: > Le 09/03/2022 à 17:12, d...@d404.nl a écrit : > > On 09-03-2022 16:55, Hendrik Boom wrote: > > > On Wed, Mar 09, 2022 at 02:42:07PM +0100, aitor wrote: > > > > > > > Did you read the following guide? > > > > > > > > https://wiki.debian.org/DebianInstaller/SataRaid > > > Interesting note. > > > > > > What is a "fake RAID"? Is it a RAID or not? > > > > > > -- hendrik > > > > > A real RAID controller has hardware and software on board and often a > > battery backup. A "fake" RAID does have some hardware but no software or > > better some software but depends on a Windows driver for the RAID > > functions. Same trick as with Win modems and printers. > > > I have worked with Dell Poweredge servers around 15 y ago. These had > PERC hardware RAIDs able to completely do the whole job without any help > from the OS. The configured RAID devices were seen by the kernel as > individual disks. After a few years working like this I configured the PERC > so as to show every disk individually (therefore no RAID), and managed > software RAIDs using mdadm. md RAIDS, not dm RAIDS. dm stands for > device-mapper, which also means Logical Volume Manager. On the contrary of > what is said in the Debian document, I found LVM (dm RAIDs) not much more > usefull than md and overly complex. On the other hand, mdadm also is not a > piece of cake but I can find my way with it and I have developped a graphics > monitoring tool for it, actually a little web server displaying the status > of all the host's md RAIDs. That looks useful. I already have a web server. Is it possible to easily configure this thing so it provides content to an existing web server? -- hendrik > > What I mean is that there is probably the possibility to configure the > PERC as no-RAID and build a software RAID on Linux, if this is manageable > for your Win10. > > -- Didier > > ___ > 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] Fake RAID
On Wed, 9 Mar 2022 19:18:13 +0100 Didier Kryn wrote: > Le 09/03/2022 à 17:12, d...@d404.nl a écrit : > > On 09-03-2022 16:55, Hendrik Boom wrote: > >> On Wed, Mar 09, 2022 at 02:42:07PM +0100, aitor wrote: > >> > >>> Did you read the following guide? > >>> > >>> https://wiki.debian.org/DebianInstaller/SataRaid > >> Interesting note. > >> > >> What is a "fake RAID"? Is it a RAID or not? > >> > >> -- hendrik > >> > > A real RAID controller has hardware and software on board and often a > > battery backup. A "fake" RAID does have some hardware but no software > > or better some software but depends on a Windows driver for the RAID > > functions. Same trick as with Win modems and printers. > > > I have worked with Dell Poweredge servers around 15 y ago. These > had PERC hardware RAIDs able to completely do the whole job without any > help from the OS. The configured RAID devices were seen by the kernel as > individual disks. After a few years working like this I configured the > PERC so as to show every disk individually (therefore no RAID), and > managed software RAIDs using mdadm. md RAIDS, not dm RAIDS. dm stands > for device-mapper, which also means Logical Volume Manager. On the > contrary of what is said in the Debian document, I found LVM (dm RAIDs) > not much more usefull than md and overly complex. On the other hand, > mdadm also is not a piece of cake but I can find my way with it and I > have developped a graphics monitoring tool for it, actually a little web > server displaying the status of all the host's md RAIDs. Hi, I'm interested about this web server thing is it packaged? Ciao, Tito > What I mean is that there is probably the possibility to configure > the PERC as no-RAID and build a software RAID on Linux, if this is > manageable for your Win10. > > -- Didier > > ___ > 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] Fake RAID
Le 09/03/2022 à 17:12, d...@d404.nl a écrit : On 09-03-2022 16:55, Hendrik Boom wrote: On Wed, Mar 09, 2022 at 02:42:07PM +0100, aitor wrote: Did you read the following guide? https://wiki.debian.org/DebianInstaller/SataRaid Interesting note. What is a "fake RAID"? Is it a RAID or not? -- hendrik A real RAID controller has hardware and software on board and often a battery backup. A "fake" RAID does have some hardware but no software or better some software but depends on a Windows driver for the RAID functions. Same trick as with Win modems and printers. I have worked with Dell Poweredge servers around 15 y ago. These had PERC hardware RAIDs able to completely do the whole job without any help from the OS. The configured RAID devices were seen by the kernel as individual disks. After a few years working like this I configured the PERC so as to show every disk individually (therefore no RAID), and managed software RAIDs using mdadm. md RAIDS, not dm RAIDS. dm stands for device-mapper, which also means Logical Volume Manager. On the contrary of what is said in the Debian document, I found LVM (dm RAIDs) not much more usefull than md and overly complex. On the other hand, mdadm also is not a piece of cake but I can find my way with it and I have developped a graphics monitoring tool for it, actually a little web server displaying the status of all the host's md RAIDs. What I mean is that there is probably the possibility to configure the PERC as no-RAID and build a software RAID on Linux, if this is manageable for your Win10. -- Didier ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] Fake RAID
On 09-03-2022 16:55, Hendrik Boom wrote: On Wed, Mar 09, 2022 at 02:42:07PM +0100, aitor wrote: Did you read the following guide? https://wiki.debian.org/DebianInstaller/SataRaid Interesting note. What is a "fake RAID"? Is it a RAID or not? -- hendrik A real RAID controller has hardware and software on board and often a battery backup. A "fake" RAID does have some hardware but no software or better some software but depends on a Windows driver for the RAID functions. Same trick as with Win modems and printers. Grtz. Nick ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
[DNG] Fake RAID
On Wed, Mar 09, 2022 at 02:42:07PM +0100, aitor wrote: > > Did you read the following guide? > > https://wiki.debian.org/DebianInstaller/SataRaid Interesting note. What is a "fake RAID"? Is it a RAID or not? -- hendrik ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
