ISCSI. AlmaLinux 8. ISCSI-Initiator - История изменений

Cless в 05:34, 27 октября 2023

2023-10-27T05:34:51Z

← Предыдущая		Версия 05:34, 27 октября 2023
Строка 13:		Строка 13:
	<code>nano /etc/iscsi/initiatorname.iscsi</code>		<code>nano /etc/iscsi/initiatorname.iscsi</code>
	InitiatorName=iqn.2023-01.alef:al8-test01		InitiatorName=iqn.2023-01.alef:al8-test01
			Timeout for iscsi-target reconnect (in seconds)

			<code>nano /etc/iscsi/iscsid.conf</code>
			...
			node.session.timeo.replacement_timeout = 86400
			...

	=== Automatic connect to each server with iscsi-target ===		=== Automatic connect to each server with iscsi-target ===

Cless в 05:27, 9 октября 2023

2023-10-09T05:27:44Z

← Предыдущая		Версия 05:27, 9 октября 2023
Строка 75:		Строка 75:
	Login to specific targets		Login to specific targets

	<code>iscsiadm -m node --login --targetname iqn.2023-01.alef:vmail.zfs -p 192.168.199.250,3260</code>		<code>iscsiadm -m node --login --targetname iqn.2023-01.alef:vmail.zfs -p 192.168.199.250,3260</code>

	Show connected session info		Show connected session info
Строка 208:		Строка 208:

	==== ???Solution??? ====		==== ???Solution??? ====
	nano /etc/iscsi/iscsid.conf		<code>nano /etc/iscsi/iscsid.conf</code>
	...		...
	node.session.timeo.replacement_timeout = 86400		node.session.timeo.replacement_timeout = 86400
Строка 232:		Строка 232:

	Login to target again		Login to target again

			<code>iscsiadm -m node --login --targetname iqn.2023-01.alef:vmail.zfs -p 192.168.199.250,3260</code>
	[[Категория:ISCSI]]		[[Категория:ISCSI]]
	[[Категория:AlmaLinux 8]]		[[Категория:AlmaLinux 8]]

Cless в 07:28, 1 октября 2023

2023-10-01T07:28:24Z

← Предыдущая		Версия 07:28, 1 октября 2023
Строка 186:		Строка 186:
	...		...
	Success!		Success!

			= Errors =

			=== RO on the iSCSI device ===

			==== Error ====
			After some time and, apparently, after some problems with network, we have RO on the iSCSI device, connected to our client:
			/dev/sdb1 on /home/mail type ext4 ('''ro''',relatime,stripe=256,_netdev)
			Logs:

			<code>nano /var/log/messages</code><syntaxhighlight lang="bash">
			[9610346.408763] sd 7:0:0:0: rejecting I/O to offline device
			[9610346.408772] JBD2: Error -5 detected when updating journal superblock for sdc1-8.
			[9610903.229966] audit: type=1400 audit(1573412971.694:10974): apparmor="DENIED" operation="mount" info="failed flags match" error=-13 profile="lxc-102_</var/lib/lxc>" name="/" pid=25409 comm="(ionclean)" flags="rw, rslave"
			[9610928.726331] audit: type=1400 audit(1573412997.190:10975): apparmor="DENIED" operation="mount" info="failed flags match" error=-13 profile="lxc-103_</var/lib/lxc>" name="/" pid=25720 comm="(ionclean)" flags="rw, rslave"
			...
			[9634328.830830] audit: type=1400 audit(1573436397.189:11001): apparmor="DENIED" operation="mount" info="failed flags match" error=-13 profile="lxc-103_</var/lib/lxc>" name="/" pid=5088 comm="(ionclean)" flags="rw, rslave"
			[9635534.626294] EXT4-fs error (device sdc1): ext4_journal_check_start:61: Detected aborted journal
			[9635534.626305] EXT4-fs (sdc1): Remounting filesystem read-only
			</syntaxhighlight>

			==== ???Solution??? ====
			nano /etc/iscsi/iscsid.conf
			...
			node.session.timeo.replacement_timeout = 86400
			...
			Restart iscsi service

			<code>service iscsid restart</code>

			Unmount device

			<code>umount /var/vmail</code>

			Logout target

			<code>iscsiadm --mode node --targetname iqn.2023-01.alef:vmail --portal 192.168.199.250 -u</code>
			...
			Logging out of session [sid: 1, target: iqn.2023-01.alef:vmail, portal: 192.168.199.250,3260]
			Logout of [sid: 1, target: iqn.2023-01.alef:vmail, portal: 192.168.199.250,3260] successful.
			...
			Delete connection

			<code>iscsiadm --mode node --targetname iqn.2023-01.alef:vmail --portal 192.168.199.250 -o delete</code>

			Login to target again
	[[Категория:ISCSI]]		[[Категория:ISCSI]]
	[[Категория:AlmaLinux 8]]		[[Категория:AlmaLinux 8]]

Cless в 13:38, 30 марта 2023

2023-03-30T13:38:48Z

← Предыдущая		Версия 13:38, 30 марта 2023
Строка 8:		Строка 8:

	<code>dnf -y install iscsi-initiator-utils</code>		<code>dnf -y install iscsi-initiator-utils</code>

			Initiator name (IMPORTANT! like a unique hostname of this host for iscsi environment)

			<code>nano /etc/iscsi/initiatorname.iscsi</code>
			InitiatorName=iqn.2023-01.alef:al8-test01

	=== Automatic connect to each server with iscsi-target ===		=== Automatic connect to each server with iscsi-target ===
Строка 44:		Строка 49:

	=== Automatic connect to ONE server with iscsi-target ===		=== Automatic connect to ONE server with iscsi-target ===
	<blockquote>Use it when you have '''only ONE server with iscsi-target'''</blockquote>~~Target path~~		<blockquote>Use it when you have '''only ONE server with iscsi-target'''</blockquote>Login and password for target (CHAP only)

	~~<code>nano /etc/iscsi/initiatorname.iscsi</code>~~
	~~InitiatorName=iqn.2023-01.alef:vmail~~
	Login and password for target (CHAP only)

	<code>nano /etc/iscsi/iscsid.conf</code>		<code>nano /etc/iscsi/iscsid.conf</code>

Cless в 10:08, 30 марта 2023

2023-03-30T10:08:11Z

← Предыдущая		Версия 10:08, 30 марта 2023
Строка 9:		Строка 9:
	<code>dnf -y install iscsi-initiator-utils</code>		<code>dnf -y install iscsi-initiator-utils</code>

	Target path		=== Automatic connect to each server with iscsi-target ===
			<blockquote>Use it when you have '''several servers with iscsi-target'''</blockquote><code>iscsiadm -m discovery -t st -p 192.168.199.187</code>
			...
			192.168.199.187:3260,1 iqn.2023-03.nas-test:esxi-v1
			192.168.199.187:3260,1 iqn.2023-03.nas-test:pve-v1
			192.168.199.187:3260,1 iqn.2023-03.nas-test:vmail
			...
			<code>iscsiadm -m node --targetname "iqn.2023-03.nas-test:pve-v1" --portal "192.168.199.187:3260" --op=update --name node.session.auth.authmethod --value=CHAP</code>

			<code>iscsiadm -m node --targetname "iqn.2023-03.nas-test:pve-v1" --portal "192.168.199.187:3260" --op=update --name node.session.auth.chap_algs --value=SHA3-256,SHA256,SHA1,MD5</code>

			<code>iscsiadm -m node --targetname "iqn.2023-03.nas-test:pve-v1" --portal "192.168.199.187:3260" --op=update --name node.session.auth.username --value=pve</code>

			<code>iscsiadm -m node --targetname "iqn.2023-03.nas-test:pve-v1" --portal "192.168.199.187:3260" --op=update --name node.session.auth.password --value=PassWord#1</code>

			<code>iscsiadm -m node --targetname "iqn.2023-03.nas-test:pve-v1" --portal "192.168.199.187:3260" --op=update --name node.startup --value=automatic</code>

			<code>iscsiadm -m node --targetname "iqn.2023-03.nas-test:pve-v1" --portal "192.168.199.187:3260" --login</code>

			Now you can see above settings in the separated config file for each target:

			'''/etc/iscsi/nodes/iqn.2023-03.nas-test\:pve-v1/192.168.199.187\,3260\,1/default'''

			This settings will remain after reboot.

			<code>reboot</code>

			Check if iscsi disk is UP. Show connected block device.

			<code>lsblk</code>
			...
			sdb 8:16 0 100G 0 disk
			...

			=== Automatic connect to ONE server with iscsi-target ===
			<blockquote>Use it when you have '''only ONE server with iscsi-target'''</blockquote>Target path

	<code>nano /etc/iscsi/initiatorname.iscsi</code>		<code>nano /etc/iscsi/initiatorname.iscsi</code>
Строка 53:		Строка 88:
	sdb 8:16 0 100G 0 disk		sdb 8:16 0 100G 0 disk
	...		...

			=== Create and mount partition ===
	Create partition		Create partition

Cless: Новая страница: «= Links = https://computingforgeeks.com/how-to-configure-iscsi-initiator-on-centos-rhel/ = Configuring = == Connect to target and mount a device == Install
2023-02-02T12:18:46Z

Новая страница: «= Links = https://computingforgeeks.com/how-to-configure-iscsi-initiator-on-centos-rhel/ = Configuring = == Connect to target and mount a device == Install <co...»

Новая страница
= Links =
https://computingforgeeks.com/how-to-configure-iscsi-initiator-on-centos-rhel/

= Configuring =

== Connect to target and mount a device ==
Install

<code>dnf -y install iscsi-initiator-utils</code>

Target path

<code>nano /etc/iscsi/initiatorname.iscsi</code>
   InitiatorName=iqn.2023-01.alef:vmail
Login and password for target (CHAP only)

<code>nano /etc/iscsi/iscsid.conf</code>
...
node.session.auth.username = vmail
node.session.auth.password = PassWord
...
Discovery target (target discovery auth disabled)

<code>iscsiadm -m discovery -t sendtargets -p 192.168.199.250</code>
   ...
   192.168.199.250:3260,1 iqn.2023-01.alef:vmail
   ...
Target info

<code>iscsiadm -m node -o show</code>

Login to ALL targets

<code>iscsiadm -m node --login</code>
   ...
   Logging in to [iface: default, target: iqn.2023-01.alef:vmail, portal: 192.168.199.250,3260]
   Login to [iface: default, target: iqn.2023-01.alef:vmail, portal: 192.168.199.250,3260] successful.
   ...
Login to specific targets

<code>iscsiadm -m node --login --targetname iqn.2023-01.alef:vmail.zfs -p 192.168.199.250,3260</code>

Show connected session info

<code>iscsiadm -m session -o show</code>
   ...
   tcp: [6] 192.168.199.250:3260,1 iqn.2023-01.alef:vmail (non-flash)
   ...
Show connected block device

<code>lsblk</code>
   ...
   sdb 8:16 0 100G 0 disk
   ...
Create partition

<code>fdisk /dev/sdb</code>
   n - Next - Next...
Create FS

<code>mkfs.ext4 /dev/sdb1</code>

Getting partition UUID

<code>blkid</code>
   ...
   /dev/sdb1: '''UUID="d13097d0-1b54-47b0-b504-ffc56d9bceff"''' BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="797c5bc8-01"
   ...
Auto mount after OS boot

<code>mkdir /var/vmail</code>

<code>nano /etc/fstab</code>
...
# iscsi vmail
UUID="d13097d0-1b54-47b0-b504-ffc56d9bceff" /var/vmail ext4 _netdev 0 0
...
<code>reboot</code>

<code>df -h</code>
   ...
   /dev/sdb1 98G 4.1G 89G 5% /var/vmail
   ...

== Unmount and disconnect a target ==
Unmount device

<code>umount /var/vmail</code>

Logout target

<code>iscsiadm --mode node --targetname iqn.2023-01.alef:vmail --portal 192.168.199.250 -u</code>
...
Logging out of session [sid: 1, target: iqn.2023-01.alef:vmail, portal: 192.168.199.250,3260]
Logout of [sid: 1, target: iqn.2023-01.alef:vmail, portal: 192.168.199.250,3260] successful.
...
Delete connection

<code>iscsiadm --mode node --targetname iqn.2023-01.alef:vmail --portal 192.168.199.250 -o delete</code>

== Increase a size of the an extent (block device) ==

=== Server ISCSI-target ===
Increase size of the extent

For example, on Nas4free you just have to type bigger size of the file-extent instead of old size of the file-extent in the web-interface and restart ISCSI-target service

=== Client ISCSI-initiator ===
Unmount device (don't logout from target, otherwise you wil not be able to work with sdb - it will disappear)

<code>umount /dev/sdb1</code>

Run parted util

<code>parted</code>

Select device

<code>> select /dev/sdb</code>

Get device full size (it will be bigger than actual size)

<code>> print</code>
   ...
   Disk /dev/sdb: 129GB
   ...
Increaze size to full disk size

<code>> resizepart 1 129GB</code>

Exit

<code>> quit</code>

Increase FS size

<code>resize2fs /dev/sdb1</code>

Mount device

<code>mount /dev/sdb1</code>

Check new size

<code>df -h</code>
   ...
   /dev/sdb1    118G 4.1G 108G 4% /var/vmail
   ...
Success!
[[Категория:ISCSI]]
[[Категория:AlmaLinux 8]]