Hot remove issue

Hot remove issue

am 14.04.2003 03:40:25 von Lucian Daniel Kafka

Hi.

I am having the noted problem of hot removing a drive from a md1 array (see
log below).

Also, the /etc/raidtab seems to be ignored. I have tried to set drives as
failed-disk, hoping to remove them after the next reboot, but that didn't
work. Also, I have tried to change the order in which the md devices are
initialized (by swapping entries in /etc/raidtab), but that had no effect
either.

Any ideas?

Apr 14 11:18:06 mason kernel: md: trying to remove hdc1 from md0 ...
Apr 14 11:18:06 mason kernel: md: bug in file md.c, line 2341
Apr 14 11:18:06 mason kernel:
Apr 14 11:18:06 mason kernel: md:^I**********************************
Apr 14 11:18:06 mason kernel: md:^I* *
Apr 14 11:18:06 mason kernel: md:^I**********************************
Apr 14 11:18:06 mason kernel: md0: array superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID: CT:3e989ba6
Apr 14 11:18:06 mason kernel: md: L1 S00136448 ND:2 RD:2 md0 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:74bbc1cd E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hdc1: O:hdc1, SZ:00137984 F:0 DN:1
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID: CT:3e989ba6
Apr 14 11:18:06 mason kernel: md: L1 S00136448 ND:2 RD:2 md0 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:74bd1dac E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hda1: O:hda1, SZ:00136448 F:0 DN:0
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID: CT:3e989ba6
Apr 14 11:18:06 mason kernel: md: L1 S00136448 ND:2 RD:2 md0 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:74bd1d97 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md3: array superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<4a0bfdb5.598bf9f5.46595892.11f6b3fc> CT:3e989be0
Apr 14 11:18:06 mason kernel: md: L1 S25005056 ND:2 RD:2 md3 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:23c3a30d E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hdc2: O:hdc2, SZ:26623680 F:0 DN:1
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<4a0bfdb5.598bf9f5.46595892.11f6b3fc> CT:3e989be0
Apr 14 11:18:06 mason kernel: md: L1 S25005056 ND:2 RD:2 md3 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:23c4feec E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hda6: O:hda6, SZ:25005056 F:0 DN:0
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<4a0bfdb5.598bf9f5.46595892.11f6b3fc> CT:3e989be0
Apr 14 11:18:06 mason kernel: md: L1 S25005056 ND:2 RD:2 md3 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:23c4fedb E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md2: array superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<1ec9d7e6.92f5e78a.b224c3a3.495cd392> CT:3e989bd7
Apr 14 11:18:06 mason kernel: md: L1 S05004096 ND:2 RD:2 md2 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:d3ebc4b1 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hdc3: O:hdc3, SZ:05120064 F:0 DN:1
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<1ec9d7e6.92f5e78a.b224c3a3.495cd392> CT:3e989bd7
Apr 14 11:18:06 mason kernel: md: L1 S05004096 ND:2 RD:2 md2 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:d3ed2090 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hda5: O:hda5, SZ:05004096 F:0 DN:0
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<1ec9d7e6.92f5e78a.b224c3a3.495cd392> CT:3e989bd7
Apr 14 11:18:06 mason kernel: md: L1 S05004096 ND:2 RD:2 md2 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:d3ed207d E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md4: array superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<94850940.c8a1409d.8a33f869.abd7bc58> CT:3e989bab
Apr 14 11:18:06 mason kernel: md: L1 S50010240 ND:2 RD:2 md4 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:bc8b29c9 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hdc6: O:hdc6, SZ:53248000 F:0 DN:1
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<94850940.c8a1409d.8a33f869.abd7bc58> CT:3e989bab
Apr 14 11:18:06 mason kernel: md: L1 S50010240 ND:2 RD:2 md4 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:bc8c85a8 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hda7: O:hda7, SZ:50010240 F:0 DN:0
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID:<94850940.c8a1409d.8a33f869.abd7bc58> CT:3e989bab
Apr 14 11:18:06 mason kernel: md: L1 S50010240 ND:2 RD:2 md4 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:bc8c8594 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md1: array superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID: CT:3e989ba0
Apr 14 11:18:06 mason kernel: md: L1 S00256960 ND:2 RD:2 md1 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:41807646 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hdc7: O:hdc7, SZ:00276544 F:0 DN:1
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID: CT:3e989ba0
Apr 14 11:18:06 mason kernel: md: L1 S00256960 ND:2 RD:2 md1 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:4181d225 E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md: rdev hda2: O:hda2, SZ:00256960 F:0 DN:0
<6>md: rdev superblock:
Apr 14 11:18:06 mason kernel: md: SB: (V:0.90.0)
ID: CT:3e989ba0
Apr 14 11:18:06 mason kernel: md: L1 S00256960 ND:2 RD:2 md1 LO:0 CS:65536
Apr 14 11:18:06 mason kernel: md: UT:3e9a82a5 ST:0 AD:2 WD:2 FD:0 SD:0
CSUM:4181d20b E:00000018
Apr 14 11:18:06 mason kernel: D 0: DISK
Apr 14 11:18:06 mason kernel: D 1: DISK
Apr 14 11:18:06 mason kernel: md: THIS: DISK
Apr 14 11:18:06 mason kernel: md:^I**********************************
Apr 14 11:18:06 mason kernel:
Apr 14 11:18:06 mason kernel: md: cannot remove active disk hdc1 from md0 ...

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Re: Hot remove issue

am 14.04.2003 03:58:44 von Mads Peter Bach

Lucian Daniel Kafka wrote:
> Hi.
>=20
> I am having the noted problem of hot removing a drive from a md1 arra=
y=20
> (see log below).

You need to set the drive as faulty first, before you can remove it. Yo=
u can=20
use mdadm --fail to do that.
>=20
> Also, the /etc/raidtab seems to be ignored. I have tried to set drive=
s=20
> as failed-disk, hoping to remove them after the next reboot, but that=
=20
> didn't work.

No, that's only for building an array.

> Also, I have tried to change the order in which the md=20
> devices are initialized (by swapping entries in /etc/raidtab), but th=
at=20
> had no effect either.

You can disable the raid autostart and use mdadm to start your arrays i=
n the=20
order you want.

--=20
Mads Peter Bach
Systemadministrator, Det Humanistiske Fakultet, Aalborg Universitet
Kroghstr=E6de 3 - 5.111, DK-9220 Aalborg =D8st
# whois MPB1-DK@whois.dk-hostmaster.dk

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