Re: [CentOS] persistent generic device for tape changer
> Am 08.02.2019 um 00:13 schrieb Ron Loftin :
>
> On Thu, 2019-02-07 at 22:29 +0100, Helmut Drodofsky wrote:
>> Hello Ron,
>>
>> sounds good. I have 2 tape changer. I persume, udev creates the same
>> link for both.
>>
>> Can I modify
>> SYMLINK+="changer-$env{ID_SERIAL}"
>>
>> The serial should be unique.
>>
>> Viele Grüße
>> Helmut Drodofsky
>>
>>
>
> I've taken you as far as I can go. Now you will have to experiment a
> bit for your use case. I should point out that at least in my system,
> the link with the serial number in it shows up even with the line
> commented in the rules file.
>
> As always, YMMV.
Maybe
ATTRS{serial}=="likethis16c07338d2a294c" , SYMLINK+="mybackup/changer1" ...
and for the second one
... ATTRS{serial}=="likethis9ae76c073f5ccb8" , SYMLINK+="mybackup/changer2" ...
?
--
LF
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Re: [CentOS] persistent generic device for tape changer
I've taken you as far as I can go. Now you will have to experiment a
bit for your use case. I should point out that at least in my system,
the link with the serial number in it shows up even with the line
commented in the rules file.
As always, YMMV.
On Thu, 2019-02-07 at 22:29 +0100, Helmut Drodofsky wrote:
> Hello Ron,
>
> sounds good. I have 2 tape changer. I persume, udev creates the same
> link for both.
>
> Can I modify
> SYMLINK+="changer-$env{ID_SERIAL}"
>
> The serial should be unique.
>
> Viele Grüße
> Helmut Drodofsky
>
> Internet XS Service GmbH
> Heßbrühlstraße 15
> 70565 Stuttgart
>
> Geschäftsführung
> Helmut Drodofsky
> HRB 21091 Stuttgart
> USt.ID: DE190582774
> Fon: 0711 781941 0
> Fax: 0711 781941 79
> Mail: i...@internet-xs.de
> www.internet-xs.de
> Am 07.02.2019 um 16:17 schrieb Ron Loftin:
> >
> > On Thu, 2019-02-07 at 10:56 +0100, Helmut Drodofsky wrote:
> > >
> > > Hello,
> > >
> > > mtx and therefor amanda use generic device /dev/sg for tape
> > > changer.
> > >
> > > These devices change on reboot.
> > >
> > > How to make them persistent?
> > >
> > > /dev/sch0 and /dev/sch1 seem to be persistent.
> > >
> > > /dev/tape/by-id/ shows links from WWID to generic device
> > >
> > > An UDEV rule could help? I have not found any example.
> > I had a similar issue when I moved to Mint 18 with the tape device.
> > This works with kernel 4.10 and later. Copy /lib/udev/rules.d/60-
> > persistent-storage-tape.rules to /etc/udev/rules.d and make a
> > change as
> > shown:
> >
> > diff -n /lib/udev/rules.d/60-persistent-storage-tape.rules
> > /etc/udev/rules.d/60-persistent-storage-tape.rules
> > d9 1
> > a9 2
> > SYMLINK+="changer"
> > # SYMLINK+="tape/by-id/scsi-$env{ID_SERIAL}"
> >
> > This created /dev/changer as a link to the /dev/sg device that
> > will
> > be consistent every time the system is booted.
> >
> > >
> > >
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"God, root, what is difference ?" Piter from UserFriendly
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Re: [CentOS] persistent generic device for tape changer
Hello Ron,
sounds good. I have 2 tape changer. I persume, udev creates the same
link for both.
Can I modify
SYMLINK+="changer-$env{ID_SERIAL}"
The serial should be unique.
Viele Grüße
Helmut Drodofsky
Internet XS Service GmbH
Heßbrühlstraße 15
70565 Stuttgart
Geschäftsführung
Helmut Drodofsky
HRB 21091 Stuttgart
USt.ID: DE190582774
Fon: 0711 781941 0
Fax: 0711 781941 79
Mail: i...@internet-xs.de
www.internet-xs.de
Am 07.02.2019 um 16:17 schrieb Ron Loftin:
> On Thu, 2019-02-07 at 10:56 +0100, Helmut Drodofsky wrote:
>> Hello,
>>
>> mtx and therefor amanda use generic device /dev/sg for tape
>> changer.
>>
>> These devices change on reboot.
>>
>> How to make them persistent?
>>
>> /dev/sch0 and /dev/sch1 seem to be persistent.
>>
>> /dev/tape/by-id/ shows links from WWID to generic device
>>
>> An UDEV rule could help? I have not found any example.
> I had a similar issue when I moved to Mint 18 with the tape device.
> This works with kernel 4.10 and later. Copy /lib/udev/rules.d/60-
> persistent-storage-tape.rules to /etc/udev/rules.d and make a change as
> shown:
>
> diff -n /lib/udev/rules.d/60-persistent-storage-tape.rules
> /etc/udev/rules.d/60-persistent-storage-tape.rules
> d9 1
> a9 2
> SYMLINK+="changer"
> # SYMLINK+="tape/by-id/scsi-$env{ID_SERIAL}"
>
> This created /dev/changer as a link to the /dev/sg device that will
> be consistent every time the system is booted.
>
>>
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Re: [CentOS] persistent generic device for tape changer
On Thu, 2019-02-07 at 10:56 +0100, Helmut Drodofsky wrote:
> Hello,
>
> mtx and therefor amanda use generic device /dev/sg for tape
> changer.
>
> These devices change on reboot.
>
> How to make them persistent?
>
> /dev/sch0 and /dev/sch1 seem to be persistent.
>
> /dev/tape/by-id/ shows links from WWID to generic device
>
> An UDEV rule could help? I have not found any example.
I had a similar issue when I moved to Mint 18 with the tape device.
This works with kernel 4.10 and later. Copy /lib/udev/rules.d/60-
persistent-storage-tape.rules to /etc/udev/rules.d and make a change as
shown:
diff -n /lib/udev/rules.d/60-persistent-storage-tape.rules
/etc/udev/rules.d/60-persistent-storage-tape.rules
d9 1
a9 2
SYMLINK+="changer"
# SYMLINK+="tape/by-id/scsi-$env{ID_SERIAL}"
This created /dev/changer as a link to the /dev/sg device that will
be consistent every time the system is booted.
>
>
--
Ron Loftin relof...@twcny.rr.com
"God, root, what is difference ?" Piter from UserFriendly
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[CentOS] persistent generic device for tape changer
Hello, mtx and therefor amanda use generic device /dev/sg for tape changer. These devices change on reboot. How to make them persistent? /dev/sch0 and /dev/sch1 seem to be persistent. /dev/tape/by-id/ shows links from WWID to generic device An UDEV rule could help? I have not found any example. -- Viele Grüße Helmut Drodofsky Internet XS Service GmbH Heßbrühlstraße 15 70565 Stuttgart Geschäftsführung Helmut Drodofsky HRB 21091 Stuttgart USt.ID: DE190582774 Fon: 0711 781941 0 Fax: 0711 781941 79 Mail: i...@internet-xs.de www.internet-xs.de ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
