Hello,
I have Red Hat 5.7 running on HP hardware box. All file systems (except root) are in LVM. I have to create a new file-system and Storage team allocated 8 luns to this server. I scanned them on OS level with below command
Code:
for x in {0..9}; do echo '- - -' > /sys/class/scsi_host/host$x/scan; done
When I checked in inq, I can only see sd device, it means OS is able to see new devices. But dm devices are not created
When I scan devices, I see below errors in /var/adm/messages
Code:
Mar 18 22:35:40 plsas_fin kernel: ata1: hard resetting link
Mar 18 22:35:41 plsas_fin kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
Mar 18 22:35:41 plsas_fin kernel: ata1.00: configured for UDMA/100
Mar 18 22:35:41 plsas_fin kernel: ata1: EH complete
Mar 18 22:35:41 plsas_fin kernel: ata2: hard resetting link
Mar 18 22:35:41 plsas_fin kernel: ata2: SATA link down (SStatus 4 SControl 300)
Mar 18 22:35:41 plsas_fin kernel: ata2: EH complete
I can not see new devices in "multipath -ll". Did anybody faced this kind of issue or anybody can give some pointer ? It is production box, so reboot is not a option with me, unless that is last resort.
-------------------------------------------------------------
Seems like somebody removed few devices improperly and that left some unusable entries in /dev. I had to run multipath -F and that flushes and fixed the issue.
Last edited by solaris_1977; 03-20-2014 at 02:09 AM..
Reason: Issue resolved
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