Re: Restore extremely slow - hdc: lost interrupt

Hello Pablo,

Pablo Chamorro said on Mon, Oct 21, 2019 at 09:43:24AM -0500:
>I'm trying to virtualize to vmware an old Fedora 4 server. I created the
>ISO backup. It has a size of 2 GB. I uploaded the iso file to vmware
>vsphere 6.5 but the boot proccess takes lilterally hours. What I can see is
>the slowness is due to something related to "hdc: lost interrupt". Please
>look at this: http://prntscr.com/pma1d1

It's probably linked to the fact that the driver used on the original host do not work fine for your target machine.

>zcat /boot/initrd-2.6.17-1.2142_FC4.img  | cpio -itv|grep mpt
>5339 blocks
>-rw-r--r--   1 root     root        67136 Apr 27  2007 lib/mptbase.ko
>-rw-r--r--   1 root     root        21724 Apr 27  2007 lib/mptspi.ko
>-rw-r--r--   1 root     root        27808 Apr 27  2007 lib/mptscsih.ko
>
>And also, in /usr/sbin/mindi I included:
>
>FORCE_MODS="mptsas mptspi"

Ok, so these drivers will be forced and loaded at restore time.

>In vmware I tried using a SCSI controller and also a SATA controller, and
>the hard disk as SCSI or IDE, but always I get the hdc: lost interrupt
>message that causes that slowness, and also: ide-cd: cmd 0x1e timed out,
>and also: hdc: DMA interrupt recovery, but mainly: hdc: lost interrupt.
>Those messages are not registered in mondo-archive.log, only a Hi there
>message at this moment (the boot process hasn't finished yet).

A possibility woule be to create an empty Fedora 4 VM on VMware to see what drivers are used by default, and if it works fine (no lost interrupt), then force this driver to used at retsore time (of course, if it's different from the one you use currently)

I guess the fdisk you mentionned in another mail is on the restored machine, in which case, yes without disk it will be difficult to reinstall.

You need to find which is the right driver for your combination.

Warning: will Fedora 4 work on such an HyperVisor remains to see.

Bruno.
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