Hi Skylar, The issue was fixed after a reboot. Thanks for your help!
Kind regards, Eric van Loon -----Original Message----- From: ADSM: Dist Stor Manager <ADSM-L@VM.MARIST.EDU> On Behalf Of Skylar Thompson Sent: Thursday, 2 February 2023 17:19 To: ADSM-L@VM.MARIST.EDU Subject: Re: Removing tape devices Can you confirm that the serial_num attribute that udev sees matches the contents of /proc/scsi/IBMtape? udevadm info --attribute-walk --name /dev/IBMtape5|grep serial_num If it does, you might try restarting udevd, though I've had to resort to reboot when udev just doesn't want to notice that something has changed. On Thu, Feb 02, 2023 at 04:14:33PM +0000, Loon, Eric van (ITOP DI) - KLM wrote: > Hi Skylar, > > Yes, all drives are LTO drives (SAN attached). I tried your procedure, but > it's not working. The six tape devices are all actually there: > > # ls -al /dev/IBMtap* > crw------- 1 root root 235, 0 Feb 2 17:04 /dev/IBMtape0 > crw------- 1 root root 235, 1024 Feb 2 17:04 /dev/IBMtape0n > crw------- 1 root root 235, 1 Feb 2 17:04 /dev/IBMtape1 > crw------- 1 root root 235, 1025 Feb 2 17:04 /dev/IBMtape1n > crw------- 1 root root 235, 2 Feb 2 17:04 /dev/IBMtape2 > crw------- 1 root root 235, 1026 Feb 2 17:04 /dev/IBMtape2n > crw------- 1 root root 235, 3 Feb 2 17:04 /dev/IBMtape3 > crw------- 1 root root 235, 1027 Feb 2 17:04 /dev/IBMtape3n > crw------- 1 root root 235, 4 Feb 2 17:04 /dev/IBMtape4 > crw------- 1 root root 235, 1028 Feb 2 17:04 /dev/IBMtape4n > crw------- 1 root root 235, 5 Feb 2 17:04 /dev/IBMtape5 > crw------- 1 root root 235, 1029 Feb 2 17:04 /dev/IBMtape5n > > But one persistent named device is just not created: > > # ls -l /dev/lin_tape/by-id/ > total 0 > lrwxrwxrwx 1 root root 17 Feb 2 17:04 changer0 -> ../../IBMchanger4 > lrwxrwxrwx 1 root root 14 Feb 2 17:04 drive1 -> ../../IBMtape5 > lrwxrwxrwx 1 root root 14 Feb 2 17:04 drive2 -> ../../IBMtape2 > lrwxrwxrwx 1 root root 14 Feb 2 17:04 drive3 -> ../../IBMtape3 > lrwxrwxrwx 1 root root 14 Feb 2 17:04 drive4 -> ../../IBMtape0 > lrwxrwxrwx 1 root root 14 Feb 2 17:04 drive5 -> ../../IBMtape4 > > I'm missing drive6 for some reason. I double-checked the serials in the > 98-lin_tape.rules file and compared them to the output of the cat > /proc/scsi/IBMtape command and they are all correct... > Thanks for your help! > > Kind regards, > Eric van Loon > > > > -----Original Message----- > From: ADSM: Dist Stor Manager <ADSM-L@VM.MARIST.EDU> On Behalf Of > Skylar Thompson > Sent: Thursday, 2 February 2023 16:56 > To: ADSM-L@VM.MARIST.EDU > Subject: Re: Removing tape devices > > Are these all IBM LTO drives using the lin_tape driver? My experience > on > RHEL7 w/ FC-attached drives is that the devices show up automatically, though > I can't remember if it removes them if the drive falls off the fabric. I > suspect not, just so that a transient problem doesn't leave the system in an > inconsistent state. You might try unloading the kernel module to get rid of > the devices: > > modprobe -r lin_tape > > And then ask udev to reprocess its rules and clean up device links it > can't > find: > > udevadm trigger > > That assumes the WWNs of the drives in your udev rules don't need updating. > > At that point, you ought to be able to re-load lin_tape: > > modprobe lin_tape > > If you're having trouble getting the drives to show up afterwards, you might > try a FC LIP: > > echo 1 > /sys/class/fc_host/hostX/issue_lip > > Followed by a SCSI rescan: > > echo "- - -" > /sys/class/scsi_host/hostN/scan > > On Thu, Feb 02, 2023 at 03:38:21PM +0000, Loon, Eric van (ITOP DI) - KLM > wrote: > > Hi everybody, > > > > I'm having some issues with missing persistent names after a HBA > > replacement on a Linux server. I like to remove all tape devices, so all > > /dev/IBMTape*, all /dev/lin_tape/by-id/drive* devices and the SCSI devices. > > What is the proper way to do that in Linux? > > Afterwards, I like to run a SCSI rescan to have everything redefined, so I > > can start with a clean sheet. > > Thanks for any help in advance! > > > > Kind regards, > > Eric van Loon > > Air France/KLM > > ******************************************************** > > For information, services and offers, please visit our web site: > > https://urldefense.com/v3/__http://www.klm.com__;!!K-Hz7m0Vt54!mj3-YqICmARjV6b_WPIXbqoM-r_YP44rh-TgAQqwCFuCBlztgWcHLVxjPSTXJa99xAcg2QUJQVSJle1GprJKpQ$ > > . This e-mail and any attachment may contain confidential and privileged > > material intended for the addressee only. 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(also known as KLM Royal > Dutch Airlines) is registered in Amstelveen, The Netherlands, with > registered number 33014286 > ******************************************************** -- -- Skylar Thompson (skyl...@u.washington.edu) -- Genome Sciences Department (UW Medicine), System Administrator -- Foege Building S046, (206)-685-7354 -- Pronouns: He/Him/His ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ********************************************************
