-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 11/29/11 7:32 AM, Jan Kara wrote: > On Tue 29-11-11 13:18:11, Alasdair G Kergon wrote: >> On Tue, Nov 29, 2011 at 02:09:13PM +0100, Jan Kara wrote: >>> Hmm, then why do these operations suspend the filesystem if they >>> apparently don't need it? Sorry for my ignorance, I never seriously worked >>> with LVM code... >> >> They don't suspend it if they don't need to. >> >> dm-ioctl.h: >> /* >> * Set this to avoid attempting to freeze any filesystem when suspending. >> */ >> #define DM_SKIP_LOCKFS_FLAG (1 << 10) /* In */ > Thanks. I was now checking in detail and indeed FIFREEZE fails if > ->freeze_fs is not set. And only xfs, ext3, ext4, reiserfs, jfs, nilfs2, > and gfs2 provide this function. So I was correct in assuming that when > filesystem supports FIFREEZE it must make sure no modifications happen to > the filesystem. So I believe that my original plan for sync to skip frozen > filesystem is correct. Jan, FWIW I agree with this as well. - -Eric > Honza -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJO1QlpAAoJECCuFpLhPd7g3wEP/1C7T280LLZHubBMolF1dEp0 qJPQAcMUCcwMn+ewMZF5Pg/Li5WxveLNydzUWURrmnXolHddkvmoUESeJt6ugraT i0bgb3ICRKpYi/1GEsW8UZQMXWIjdg5qyEvagDou/oy7qPXeND+JTvSYdqoti0Fn pKv9ZUuU2arPrdDqCHP0lmiU1mF85/h/liB09GdFll3nLvSahJK5N9Cr6d0jG4VL 9faJSKI4EgVvyDPWx+L4mA5aIbPveQY0LbzpS+QSGswkd4ylVvLCV76oYj4jEH7R hbv8OjgWTEKV8wgqmFFF/HXwzmJqzfT0rFCgbe4ZCJdnNujRe2h/wg5Gpkbj3lWc htwUZfKKg9Vm9PheqMVxbRYEbWXB+g2Seiv/5fHNNG3WeFuPo15ftcu3Kjj7z/gS zY1PnkHJj7/fF9tyZyTGb/AXicJyLJN7gWvf8pWNETXd4PfuDHgD70iQfWbZdKfe 0a+G4AGhXJ9zrjImM1vnsq09AMTQApL+Lm+VxdPfUbFBZd9pSC+xbBDKvOl8qy3A Gllbjtbwi/3hV2S8t4vSLLowRTZqkLC+VHphnyLlwVeHAUsqZXQ58ZrFNx2NaYdL UGkEty8zHGL08Yglwfd2iSlzDb/0OmCurXSZcAAXH47AAzPxZgN80KFbwc2PsGG7 DC9hxrb1bGZojdDTsuku =UWkJ -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
