Sono perplesso su zfs

Franco Marchesini <[email protected]> Wed, 25 Feb 2015 19:22:59 +0100
Newsgroups gmane.os.freebsd.italian.aiuto
Message-ID <CAP6J_dPP_-3ADoCC5QPKzw2i+s_6=1vC705ydTqPRdG-XhXBNQ@mail.gmail.com>
Ciao a tutti,

mi sono fatto una macchinetta FreeBSD 10 AMD64 con tre ischi in raidz
che utilizzo come storage .

Ultimamente sto' riscontrando diversi problemi durante la
lettura/scrittura di file di una certa dimensione.

In syslog sono presenti diversi messaggi tipo questi:

Jan 30 14:38:37 fbdvd kernel: ahcich2: is 00000000 cs 00000000 ss
00006000 rs 00006000 tfd 40 serr 00000000 cmd 0000ee17
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): READ_FPDMA_QUEUED.
ACB: 60 00 40 a0 93 40 22 01 00 01 00 00
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): CAM status: Command timeout
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): Retrying command
Jan 30 14:38:37 fbdvd kernel: ahcich2: Timeout on slot 16 port 0
Jan 30 14:38:37 fbdvd kernel: ahcich2: is 00000000 cs 00000000 ss
00030000 rs 00030000 tfd 40 serr 00000000 cmd 0000f117
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): READ_FPDMA_QUEUED.
ACB: 60 00 40 a4 93 40 22 01 00 01 00 00
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): CAM status: Command timeout
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): Retrying command
Jan 30 14:38:37 fbdvd kernel: ahcich2: Timeout on slot 19 port 0
Jan 30 14:38:37 fbdvd kernel: ahcich2: is 00000000 cs 00080000 ss
00000000 rs 00080000 tfd d0 serr 00000000 cmd 0000f317
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): READ_DMA48. ACB:
25 00 40 a7 93 40 22 01 00 00 00 01
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): CAM status: Command timeout
Jan 30 14:38:37 fbdvd kernel: (ada2:ahcich2:0:0:0): Retrying command

Quello che mi rende perplesso e' lo pool che sembra non rilevare niente:

  pool: zroot
 state: ONLINE
  scan: scrub canceled on Fri Jan 30 14:38:38 2015
config:

	NAME                                            STATE     READ WRITE CKSUM
	zroot                                           ONLINE       0     0     0
	  raidz1-0                                      ONLINE       0     0     0
	    gptid/296acc29-96e6-11e3-9463-bc5ff4dd0ec7  ONLINE       0     0     0
	    gptid/2a99ca6c-96e6-11e3-9463-bc5ff4dd0ec7  ONLINE       0     0     0
	    gptid/2bdd3ca6-96e6-11e3-9463-bc5ff4dd0ec7  ONLINE       0     0     0

errors: No known data errors

Lo smartmontools rileva questo problema
smartctl -t long /dev/ada2

Feb 25 18:36:10 fbdvd smartd[789]: Device: /dev/ada2, 9 Currently
unreadable (pending) sectors
Feb 25 19:06:10 fbdvd smartd[793]: Device: /dev/ada2, 9 Currently
unreadable (pending) sectors

Mi lasci perplesso che zfs non rilevi niente.

Qualche idea?

Grazie
Franco

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