11-29-2008
Very urgent - answers needed!!!
hy guys,
i got few interview questions i need someone to answer urgently:
1)If you cant get to the root, you try to fsck it, but gets errors to read file systems. What steps do you take to recover the host before you see if there is any data corruption on the root drive?
2)If you fsck it and all looks good, you reboot, host comes up clean, what are things you would look at to see why the host crashed?
3)
What do you use to start service back up, what commands?
4)If you have a client that send an email they can't connect to a database server from their desktop, no error codes. What could you do from the client side to make sure the database host is even listening?
5)If I have a LUN that's been presented to the box, how would I present that to a local zone?
6)Where would I do the DFS configuration?
7)If I have SAN space and want to create a file space, and create a local zone. What do I need to do to create another file system and present it to a local zone? Assume the SAN is already there.
8)If you did a netstat and it is listening, what can you do from the client side that to see if the port is open.
Regards
Charneet
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LEARN ABOUT FREEBSD
systemd-fsck
SYSTEMD-FSCK@.SERVICE(8) systemd-fsck@.service SYSTEMD-FSCK@.SERVICE(8)
NAME
systemd-fsck@.service, systemd-fsck-root.service, systemd-fsck - File system checker logic
SYNOPSIS
systemd-fsck@.service
systemd-fsck-root.service
/lib/systemd/systemd-fsck
DESCRIPTION
systemd-fsck@.service and systemd-fsck-root.service are services responsible for file system checks. They are instantiated for each device
that is configured for file system checking. systemd-fsck-root.service is responsible for file system checks on the root file system, but
only if the root filesystem was not checked in the initramfs. systemd-fsck@.service is used for all other file systems and for the root
file system in the initramfs.
These services are started at boot if passno in /etc/fstab for the file system is set to a value greater than zero. The file system check
for root is performed before the other file systems. Other file systems may be checked in parallel, except when they are on the same
rotating disk.
systemd-fsck does not know any details about specific filesystems, and simply executes file system checkers specific to each filesystem
type (/sbin/fsck.*). This helper will decide if the filesystem should actually be checked based on the time since last check, number of
mounts, unclean unmount, etc.
If a file system check fails for a service without nofail, emergency mode is activated, by isolating to emergency.target.
KERNEL COMMAND LINE
systemd-fsck understands these kernel command line parameters:
fsck.mode=
One of "auto", "force", "skip". Controls the mode of operation. The default is "auto", and ensures that file system checks are done
when the file system checker deems them necessary. "force" unconditionally results in full file system checks. "skip" skips any file
system checks.
fsck.repair=
One of "preen", "yes", "no". Controls the mode of operation. The default is "preen", and will automatically repair problems that can be
safely fixed. "yes" will answer yes to all questions by fsck and "no" will answer no to all questions.
SEE ALSO
systemd(1), fsck(8), systemd-quotacheck.service(8), fsck.btrfs(8), fsck.cramfs(8), fsck.ext4(8), fsck.fat(8), fsck.hfsplus(8),
fsck.minix(8), fsck.ntfs(8), fsck.xfs(8)
systemd 237 SYSTEMD-FSCK@.SERVICE(8)